./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-1.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_1.cil-2+token_ring.07.cil-1.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 686ecb1010b71c794fc4e873862aa984c2fdfbe32a68bd8271c0851d6420f945 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 01:06:08,304 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 01:06:08,377 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 01:06:08,382 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 01:06:08,384 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 01:06:08,411 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 01:06:08,411 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 01:06:08,412 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 01:06:08,413 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 01:06:08,414 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 01:06:08,414 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 01:06:08,414 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 01:06:08,415 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 01:06:08,417 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 01:06:08,417 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 01:06:08,418 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 01:06:08,418 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 01:06:08,418 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 01:06:08,419 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 01:06:08,419 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 01:06:08,419 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 01:06:08,423 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 01:06:08,424 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 01:06:08,424 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 01:06:08,424 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 01:06:08,424 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 01:06:08,424 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 01:06:08,425 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 01:06:08,425 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 01:06:08,425 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 01:06:08,425 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 01:06:08,425 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 01:06:08,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 01:06:08,426 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 01:06:08,427 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 01:06:08,428 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 01:06:08,428 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 01:06:08,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 01:06:08,429 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 01:06:08,429 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 01:06:08,429 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 01:06:08,430 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 01:06:08,430 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 686ecb1010b71c794fc4e873862aa984c2fdfbe32a68bd8271c0851d6420f945 [2024-11-10 01:06:08,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 01:06:08,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 01:06:08,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 01:06:08,714 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 01:06:08,715 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 01:06:08,716 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-1.c [2024-11-10 01:06:10,176 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 01:06:10,375 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 01:06:10,376 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-1.c [2024-11-10 01:06:10,390 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddcb9aeca/4454d58317fb478da67bb499274f6e91/FLAG59468720e [2024-11-10 01:06:10,740 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddcb9aeca/4454d58317fb478da67bb499274f6e91 [2024-11-10 01:06:10,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 01:06:10,744 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 01:06:10,745 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 01:06:10,745 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 01:06:10,750 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 01:06:10,751 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:06:10" (1/1) ... [2024-11-10 01:06:10,751 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65097b53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:10, skipping insertion in model container [2024-11-10 01:06:10,752 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:06:10" (1/1) ... [2024-11-10 01:06:10,805 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 01:06:11,035 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_1.cil-2+token_ring.07.cil-1.c[913,926] [2024-11-10 01:06:11,078 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_1.cil-2+token_ring.07.cil-1.c[5977,5990] [2024-11-10 01:06:11,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 01:06:11,162 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 01:06:11,182 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_1.cil-2+token_ring.07.cil-1.c[913,926] [2024-11-10 01:06:11,205 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_1.cil-2+token_ring.07.cil-1.c[5977,5990] [2024-11-10 01:06:11,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 01:06:11,293 INFO L204 MainTranslator]: Completed translation [2024-11-10 01:06:11,294 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:11 WrapperNode [2024-11-10 01:06:11,294 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 01:06:11,296 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 01:06:11,296 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 01:06:11,296 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 01:06:11,302 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:11" (1/1) ... [2024-11-10 01:06:11,313 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:11" (1/1) ... [2024-11-10 01:06:11,362 INFO L138 Inliner]: procedures = 62, calls = 69, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 769 [2024-11-10 01:06:11,362 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 01:06:11,363 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 01:06:11,363 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 01:06:11,363 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 01:06:11,374 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:11" (1/1) ... [2024-11-10 01:06:11,375 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:11" (1/1) ... [2024-11-10 01:06:11,379 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:11" (1/1) ... [2024-11-10 01:06:11,399 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 01:06:11,400 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:11" (1/1) ... [2024-11-10 01:06:11,400 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:11" (1/1) ... [2024-11-10 01:06:11,410 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:11" (1/1) ... [2024-11-10 01:06:11,414 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:11" (1/1) ... [2024-11-10 01:06:11,418 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:11" (1/1) ... [2024-11-10 01:06:11,420 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:11" (1/1) ... [2024-11-10 01:06:11,423 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 01:06:11,424 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 01:06:11,424 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 01:06:11,425 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 01:06:11,427 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:11" (1/1) ... [2024-11-10 01:06:11,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 01:06:11,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 01:06:11,463 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 01:06:11,469 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 01:06:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 01:06:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-10 01:06:11,518 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-10 01:06:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2024-11-10 01:06:11,519 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2024-11-10 01:06:11,520 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-10 01:06:11,520 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-10 01:06:11,520 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-10 01:06:11,520 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-10 01:06:11,520 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-10 01:06:11,521 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-10 01:06:11,521 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-10 01:06:11,521 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-10 01:06:11,521 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-10 01:06:11,521 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-10 01:06:11,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 01:06:11,522 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-10 01:06:11,522 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-10 01:06:11,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 01:06:11,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 01:06:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-10 01:06:11,523 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-10 01:06:11,646 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 01:06:11,649 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 01:06:12,352 INFO L? ?]: Removed 97 outVars from TransFormulas that were not future-live. [2024-11-10 01:06:12,353 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 01:06:12,377 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 01:06:12,378 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 01:06:12,378 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 01:06:12 BoogieIcfgContainer [2024-11-10 01:06:12,378 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 01:06:12,381 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 01:06:12,381 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 01:06:12,384 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 01:06:12,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 01:06:10" (1/3) ... [2024-11-10 01:06:12,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d5613f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 01:06:12, skipping insertion in model container [2024-11-10 01:06:12,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:11" (2/3) ... [2024-11-10 01:06:12,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d5613f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 01:06:12, skipping insertion in model container [2024-11-10 01:06:12,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 01:06:12" (3/3) ... [2024-11-10 01:06:12,387 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.07.cil-1.c [2024-11-10 01:06:12,400 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 01:06:12,400 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-10 01:06:12,506 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 01:06:12,514 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;@548c4bf6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 01:06:12,514 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-10 01:06:12,521 INFO L276 IsEmpty]: Start isEmpty. Operand has 391 states, 342 states have (on average 1.5526315789473684) internal successors, (531), 357 states have internal predecessors, (531), 27 states have call successors, (27), 9 states have call predecessors, (27), 9 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-10 01:06:12,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-10 01:06:12,532 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 01:06:12,532 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] [2024-11-10 01:06:12,533 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 01:06:12,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 01:06:12,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1670638963, now seen corresponding path program 1 times [2024-11-10 01:06:12,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 01:06:12,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853572725] [2024-11-10 01:06:12,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 01:06:12,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 01:06:12,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 01:06:12,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-10 01:06:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 01:06:12,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-10 01:06:12,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 01:06:12,876 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 01:06:12,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 01:06:12,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853572725] [2024-11-10 01:06:12,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853572725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 01:06:12,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 01:06:12,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 01:06:12,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130718048] [2024-11-10 01:06:12,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 01:06:12,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 01:06:12,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 01:06:12,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 01:06:12,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 01:06:12,926 INFO L87 Difference]: Start difference. First operand has 391 states, 342 states have (on average 1.5526315789473684) internal successors, (531), 357 states have internal predecessors, (531), 27 states have call successors, (27), 9 states have call predecessors, (27), 9 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-10 01:06:13,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 01:06:13,081 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 01:06:13,084 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 96 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 01:06:13,085 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 163 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 01:06:13,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 01:06:13,087 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 01:06:13,090 INFO L158 Benchmark]: Toolchain (without parser) took 2346.54ms. Allocated memory is still 163.6MB. Free memory was 94.0MB in the beginning and 103.2MB in the end (delta: -9.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 01:06:13,091 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 113.2MB. Free memory is still 74.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 01:06:13,091 INFO L158 Benchmark]: CACSL2BoogieTranslator took 549.79ms. Allocated memory is still 163.6MB. Free memory was 93.8MB in the beginning and 118.1MB in the end (delta: -24.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-10 01:06:13,091 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.53ms. Allocated memory is still 163.6MB. Free memory was 118.1MB in the beginning and 114.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-10 01:06:13,092 INFO L158 Benchmark]: Boogie Preprocessor took 60.86ms. Allocated memory is still 163.6MB. Free memory was 114.0MB in the beginning and 110.4MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-10 01:06:13,092 INFO L158 Benchmark]: IcfgBuilder took 953.90ms. Allocated memory is still 163.6MB. Free memory was 110.4MB in the beginning and 55.2MB in the end (delta: 55.2MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2024-11-10 01:06:13,093 INFO L158 Benchmark]: TraceAbstraction took 708.58ms. Allocated memory is still 163.6MB. Free memory was 53.8MB in the beginning and 103.2MB in the end (delta: -49.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 01:06:13,095 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 113.2MB. Free memory is still 74.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 549.79ms. Allocated memory is still 163.6MB. Free memory was 93.8MB in the beginning and 118.1MB in the end (delta: -24.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.53ms. Allocated memory is still 163.6MB. Free memory was 118.1MB in the beginning and 114.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.86ms. Allocated memory is still 163.6MB. Free memory was 114.0MB in the beginning and 110.4MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * IcfgBuilder took 953.90ms. Allocated memory is still 163.6MB. Free memory was 110.4MB in the beginning and 55.2MB in the end (delta: 55.2MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. * TraceAbstraction took 708.58ms. Allocated memory is still 163.6MB. Free memory was 53.8MB in the beginning and 103.2MB in the end (delta: -49.4MB). 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 01:06:13,126 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_1.cil-2+token_ring.07.cil-1.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 686ecb1010b71c794fc4e873862aa984c2fdfbe32a68bd8271c0851d6420f945 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 01:06:15,304 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 01:06:15,392 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-10 01:06:15,397 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 01:06:15,397 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 01:06:15,430 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 01:06:15,432 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 01:06:15,432 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 01:06:15,433 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 01:06:15,434 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 01:06:15,434 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 01:06:15,435 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 01:06:15,435 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 01:06:15,436 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 01:06:15,437 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 01:06:15,438 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 01:06:15,438 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 01:06:15,438 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 01:06:15,439 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 01:06:15,439 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 01:06:15,439 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 01:06:15,442 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 01:06:15,442 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 01:06:15,443 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 01:06:15,443 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-10 01:06:15,443 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 01:06:15,444 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-10 01:06:15,444 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 01:06:15,444 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 01:06:15,444 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 01:06:15,445 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 01:06:15,445 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 01:06:15,445 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 01:06:15,445 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 01:06:15,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 01:06:15,446 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 01:06:15,447 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 01:06:15,447 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 01:06:15,448 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-10 01:06:15,448 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-10 01:06:15,448 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 01:06:15,448 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 01:06:15,449 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 01:06:15,449 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 01:06:15,449 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 686ecb1010b71c794fc4e873862aa984c2fdfbe32a68bd8271c0851d6420f945 [2024-11-10 01:06:15,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 01:06:15,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 01:06:15,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 01:06:15,806 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 01:06:15,808 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 01:06:15,809 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-1.c [2024-11-10 01:06:17,427 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 01:06:17,643 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 01:06:17,643 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-1.c [2024-11-10 01:06:17,659 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3241b3245/4ad25ff326ae466b9d32cc385ed55236/FLAGd85ba6524 [2024-11-10 01:06:17,670 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3241b3245/4ad25ff326ae466b9d32cc385ed55236 [2024-11-10 01:06:17,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 01:06:17,673 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 01:06:17,674 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 01:06:17,674 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 01:06:17,679 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 01:06:17,680 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:06:17" (1/1) ... [2024-11-10 01:06:17,681 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9444b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:17, skipping insertion in model container [2024-11-10 01:06:17,681 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:06:17" (1/1) ... [2024-11-10 01:06:17,725 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 01:06:17,924 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_1.cil-2+token_ring.07.cil-1.c[913,926] [2024-11-10 01:06:17,980 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_1.cil-2+token_ring.07.cil-1.c[5977,5990] [2024-11-10 01:06:18,079 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 01:06:18,098 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 01:06:18,111 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_1.cil-2+token_ring.07.cil-1.c[913,926] [2024-11-10 01:06:18,131 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_1.cil-2+token_ring.07.cil-1.c[5977,5990] [2024-11-10 01:06:18,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 01:06:18,201 INFO L204 MainTranslator]: Completed translation [2024-11-10 01:06:18,202 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:18 WrapperNode [2024-11-10 01:06:18,202 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 01:06:18,203 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 01:06:18,203 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 01:06:18,203 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 01:06:18,209 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:18" (1/1) ... [2024-11-10 01:06:18,229 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:18" (1/1) ... [2024-11-10 01:06:18,280 INFO L138 Inliner]: procedures = 63, calls = 69, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 738 [2024-11-10 01:06:18,281 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 01:06:18,282 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 01:06:18,282 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 01:06:18,282 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 01:06:18,291 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:18" (1/1) ... [2024-11-10 01:06:18,292 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:18" (1/1) ... [2024-11-10 01:06:18,303 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:18" (1/1) ... [2024-11-10 01:06:18,334 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 01:06:18,334 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:18" (1/1) ... [2024-11-10 01:06:18,334 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:18" (1/1) ... [2024-11-10 01:06:18,356 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:18" (1/1) ... [2024-11-10 01:06:18,361 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:18" (1/1) ... [2024-11-10 01:06:18,365 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:18" (1/1) ... [2024-11-10 01:06:18,367 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:18" (1/1) ... [2024-11-10 01:06:18,375 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 01:06:18,376 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 01:06:18,376 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 01:06:18,377 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 01:06:18,377 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:18" (1/1) ... [2024-11-10 01:06:18,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 01:06:18,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 01:06:18,413 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 01:06:18,419 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 01:06:18,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 01:06:18,464 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-10 01:06:18,466 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-10 01:06:18,466 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2024-11-10 01:06:18,466 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2024-11-10 01:06:18,466 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-10 01:06:18,466 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-10 01:06:18,466 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-10 01:06:18,467 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-10 01:06:18,467 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-10 01:06:18,467 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-10 01:06:18,467 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-10 01:06:18,467 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-10 01:06:18,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-10 01:06:18,467 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-10 01:06:18,468 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-10 01:06:18,468 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-10 01:06:18,468 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-10 01:06:18,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 01:06:18,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 01:06:18,469 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-10 01:06:18,469 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-10 01:06:18,615 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 01:06:18,618 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 01:06:19,446 INFO L? ?]: Removed 97 outVars from TransFormulas that were not future-live. [2024-11-10 01:06:19,447 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 01:06:19,478 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 01:06:19,479 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 01:06:19,479 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 01:06:19 BoogieIcfgContainer [2024-11-10 01:06:19,479 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 01:06:19,483 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 01:06:19,483 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 01:06:19,486 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 01:06:19,486 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 01:06:17" (1/3) ... [2024-11-10 01:06:19,487 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cecb8c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 01:06:19, skipping insertion in model container [2024-11-10 01:06:19,487 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:18" (2/3) ... [2024-11-10 01:06:19,488 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cecb8c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 01:06:19, skipping insertion in model container [2024-11-10 01:06:19,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 01:06:19" (3/3) ... [2024-11-10 01:06:19,489 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.07.cil-1.c [2024-11-10 01:06:19,508 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 01:06:19,508 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-10 01:06:19,596 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 01:06:19,602 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;@7858fa6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 01:06:19,603 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-10 01:06:19,608 INFO L276 IsEmpty]: Start isEmpty. Operand has 391 states, 342 states have (on average 1.5526315789473684) internal successors, (531), 357 states have internal predecessors, (531), 27 states have call successors, (27), 9 states have call predecessors, (27), 9 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-10 01:06:19,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-10 01:06:19,619 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 01:06:19,620 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] [2024-11-10 01:06:19,620 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 01:06:19,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 01:06:19,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1670638963, now seen corresponding path program 1 times [2024-11-10 01:06:19,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 01:06:19,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366348087] [2024-11-10 01:06:19,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 01:06:19,646 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 01:06:19,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 01:06:19,649 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 01:06:19,651 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 01:06:19,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 01:06:19,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 01:06:19,787 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 01:06:19,841 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 01:06:19,841 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 01:06:19,842 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 01:06:19,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366348087] [2024-11-10 01:06:19,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366348087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 01:06:19,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 01:06:19,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 01:06:19,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297628305] [2024-11-10 01:06:19,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 01:06:19,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 01:06:19,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 01:06:19,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 01:06:19,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 01:06:19,884 INFO L87 Difference]: Start difference. First operand has 391 states, 342 states have (on average 1.5526315789473684) internal successors, (531), 357 states have internal predecessors, (531), 27 states have call successors, (27), 9 states have call predecessors, (27), 9 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-10 01:06:19,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 01:06:19,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 01:06:19,943 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 63 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 01:06:19,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 156 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 01:06:19,951 INFO L540 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)] Forceful destruction successful, exit code 0 [2024-11-10 01:06:20,149 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 01:06:20,150 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 01:06:20,154 INFO L158 Benchmark]: Toolchain (without parser) took 2480.72ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 47.3MB in the beginning and 67.9MB in the end (delta: -20.6MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. [2024-11-10 01:06:20,155 INFO L158 Benchmark]: CDTParser took 0.99ms. Allocated memory is still 58.7MB. Free memory was 42.9MB in the beginning and 42.9MB in the end (delta: 44.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 01:06:20,155 INFO L158 Benchmark]: CACSL2BoogieTranslator took 528.03ms. Allocated memory is still 77.6MB. Free memory was 47.0MB in the beginning and 41.7MB in the end (delta: 5.3MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2024-11-10 01:06:20,156 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.88ms. Allocated memory is still 77.6MB. Free memory was 41.7MB in the beginning and 38.2MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-10 01:06:20,156 INFO L158 Benchmark]: Boogie Preprocessor took 93.98ms. Allocated memory is still 77.6MB. Free memory was 38.2MB in the beginning and 34.3MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-10 01:06:20,157 INFO L158 Benchmark]: IcfgBuilder took 1103.06ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 34.3MB in the beginning and 65.5MB in the end (delta: -31.2MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2024-11-10 01:06:20,157 INFO L158 Benchmark]: TraceAbstraction took 670.85ms. Allocated memory is still 94.4MB. Free memory was 65.1MB in the beginning and 67.9MB in the end (delta: -2.8MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. [2024-11-10 01:06:20,160 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.99ms. Allocated memory is still 58.7MB. Free memory was 42.9MB in the beginning and 42.9MB in the end (delta: 44.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 528.03ms. Allocated memory is still 77.6MB. Free memory was 47.0MB in the beginning and 41.7MB in the end (delta: 5.3MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.88ms. Allocated memory is still 77.6MB. Free memory was 41.7MB in the beginning and 38.2MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 93.98ms. Allocated memory is still 77.6MB. Free memory was 38.2MB in the beginning and 34.3MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * IcfgBuilder took 1103.06ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 34.3MB in the beginning and 65.5MB in the end (delta: -31.2MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. * TraceAbstraction took 670.85ms. Allocated memory is still 94.4MB. Free memory was 65.1MB in the beginning and 67.9MB in the end (delta: -2.8MB). Peak memory consumption was 29.7MB. 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 01:06:20,189 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 Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null