./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-ext/04_incdec_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-ext/04_incdec_cas.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a9295efc0d8bacfc5fb202511f0d3721ae5554ffb4def47cf5dbf45088356869 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:11:47,036 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:11:47,072 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 08:11:47,075 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:11:47,075 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:11:47,089 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:11:47,090 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:11:47,090 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:11:47,090 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:11:47,090 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:11:47,090 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:11:47,090 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:11:47,091 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:11:47,091 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:11:47,091 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:11:47,091 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:11:47,091 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:11:47,091 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:11:47,091 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:11:47,091 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:11:47,091 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:11:47,091 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:11:47,091 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:11:47,091 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:11:47,091 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:11:47,091 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:11:47,091 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:11:47,091 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:11:47,092 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:11:47,092 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:11:47,092 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:11:47,092 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:11:47,092 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:11:47,092 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:11:47,092 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:11:47,092 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:11:47,092 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 08:11:47,092 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 08:11:47,092 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:11:47,092 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:11:47,092 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:11:47,092 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:11:47,092 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> a9295efc0d8bacfc5fb202511f0d3721ae5554ffb4def47cf5dbf45088356869 [2025-02-08 08:11:47,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:11:47,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:11:47,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:11:47,342 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:11:47,342 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:11:47,343 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/04_incdec_cas.i [2025-02-08 08:11:48,499 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/261cc4eb1/e3ddf8bc610548a0a7ddeea8d50e2e34/FLAG64984077b [2025-02-08 08:11:48,820 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:11:48,821 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/04_incdec_cas.i [2025-02-08 08:11:48,835 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/261cc4eb1/e3ddf8bc610548a0a7ddeea8d50e2e34/FLAG64984077b [2025-02-08 08:11:49,087 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/261cc4eb1/e3ddf8bc610548a0a7ddeea8d50e2e34 [2025-02-08 08:11:49,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:11:49,090 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:11:49,092 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:11:49,092 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:11:49,095 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:11:49,096 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:11:49" (1/1) ... [2025-02-08 08:11:49,097 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a6b817c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:49, skipping insertion in model container [2025-02-08 08:11:49,097 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:11:49" (1/1) ... [2025-02-08 08:11:49,123 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:11:49,365 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:11:49,374 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:11:49,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:11:49,444 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:11:49,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:49 WrapperNode [2025-02-08 08:11:49,446 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:11:49,446 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:11:49,446 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:11:49,446 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:11:49,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:49" (1/1) ... [2025-02-08 08:11:49,460 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:49" (1/1) ... [2025-02-08 08:11:49,473 INFO L138 Inliner]: procedures = 174, calls = 46, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 159 [2025-02-08 08:11:49,473 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:11:49,474 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:11:49,474 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:11:49,474 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:11:49,479 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:49" (1/1) ... [2025-02-08 08:11:49,479 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:49" (1/1) ... [2025-02-08 08:11:49,481 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:49" (1/1) ... [2025-02-08 08:11:49,489 INFO L175 MemorySlicer]: Split 23 memory accesses to 4 slices as follows [2, 6, 6, 9]. 39 percent of accesses are in the largest equivalence class. The 5 initializations are split as follows [2, 2, 0, 1]. The 8 writes are split as follows [0, 2, 4, 2]. [2025-02-08 08:11:49,490 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:49" (1/1) ... [2025-02-08 08:11:49,490 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:49" (1/1) ... [2025-02-08 08:11:49,494 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:49" (1/1) ... [2025-02-08 08:11:49,494 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:49" (1/1) ... [2025-02-08 08:11:49,495 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:49" (1/1) ... [2025-02-08 08:11:49,496 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:49" (1/1) ... [2025-02-08 08:11:49,497 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:11:49,498 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:11:49,498 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:11:49,498 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:11:49,499 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:49" (1/1) ... [2025-02-08 08:11:49,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:11:49,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:49,522 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 08:11:49,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 08:11:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 08:11:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 08:11:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 08:11:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-08 08:11:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-02-08 08:11:49,539 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-02-08 08:11:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 08:11:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 08:11:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-08 08:11:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-08 08:11:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 08:11:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:11:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 08:11:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 08:11:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 08:11:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 08:11:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 08:11:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-08 08:11:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 08:11:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:11:49,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:11:49,541 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 08:11:49,658 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:11:49,660 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:11:49,898 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L731: havoc dec_~#dec__casret~0#1.base, dec_~#dec__casret~0#1.offset; [2025-02-08 08:11:49,898 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L731-1: SUMMARY for call ULTIMATE.dealloc(dec_~#dec__casret~0#1.base, dec_~#dec__casret~0#1.offset); srcloc: null [2025-02-08 08:11:49,898 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L748: assume { :end_inline_inc } true;havoc #t~ret15#1; [2025-02-08 08:11:49,898 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L748-1: havoc inc_#t~mem7#1, inc_#t~mem8#1, inc_~inc__v~0#1, inc_~inc__vn~0#1, inc_~#inc__casret~0#1.base, inc_~#inc__casret~0#1.offset; [2025-02-08 08:11:49,901 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L748-2: #t~ret15#1 := inc_#res#1; [2025-02-08 08:11:49,901 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L749: assume { :end_inline_dec } true;havoc #t~ret16#1; [2025-02-08 08:11:49,902 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L749-1: havoc dec_#t~mem12#1, dec_#t~mem13#1, dec_~dec__v~0#1, dec_~dec__vn~0#1, dec_~#dec__casret~0#1.base, dec_~#dec__casret~0#1.offset; [2025-02-08 08:11:49,902 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L749-2: #t~ret16#1 := dec_#res#1; [2025-02-08 08:11:49,902 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L750: #res#1.base, #res#1.offset := 0, 0; [2025-02-08 08:11:49,902 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint thr1FINAL: assume true; [2025-02-08 08:11:49,902 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L711: havoc inc_~#inc__casret~0#1.base, inc_~#inc__casret~0#1.offset; [2025-02-08 08:11:49,902 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L711-1: SUMMARY for call ULTIMATE.dealloc(inc_~#inc__casret~0#1.base, inc_~#inc__casret~0#1.offset); srcloc: null [2025-02-08 08:11:49,924 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 08:11:49,924 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:11:50,172 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:11:50,173 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 08:11:50,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:11:50 BoogieIcfgContainer [2025-02-08 08:11:50,173 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:11:50,174 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:11:50,175 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:11:50,178 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:11:50,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:11:49" (1/3) ... [2025-02-08 08:11:50,180 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b27678 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:11:50, skipping insertion in model container [2025-02-08 08:11:50,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:49" (2/3) ... [2025-02-08 08:11:50,180 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b27678 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:11:50, skipping insertion in model container [2025-02-08 08:11:50,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:11:50" (3/3) ... [2025-02-08 08:11:50,182 INFO L128 eAbstractionObserver]: Analyzing ICFG 04_incdec_cas.i [2025-02-08 08:11:50,192 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:11:50,193 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 04_incdec_cas.i that has 2 procedures, 66 locations, 1 initial locations, 3 loop locations, and 39 error locations. [2025-02-08 08:11:50,194 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 08:11:50,240 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException: Cannot invoke "de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.structure.IcfgLocation.equals(Object)" because the return value of "java.util.Map.get(Object)" is null at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.ProcedureMultiplier.constructLocationCopy(ProcedureMultiplier.java:348) at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1228) at de.uni_freiburg.informatik.ultimate.util.datastructures.BidirectionalMap.computeIfAbsent(BidirectionalMap.java:189) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.ProcedureMultiplier.getOrConstructLocationCopy(ProcedureMultiplier.java:334) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.ProcedureMultiplier.duplicateProcedureEdges(ProcedureMultiplier.java:221) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.ProcedureMultiplier.(ProcedureMultiplier.java:133) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.ProcedureMultiplier.(ProcedureMultiplier.java:114) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.ProcedureMultiplier.duplicateProcedures(ProcedureMultiplier.java:143) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.IcfgPetrifier.(IcfgPetrifier.java:104) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.petrify(TraceAbstractionStarter.java:492) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) 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) [2025-02-08 08:11:50,246 INFO L158 Benchmark]: Toolchain (without parser) took 1155.12ms. Allocated memory is still 167.8MB. Free memory was 126.0MB in the beginning and 96.6MB in the end (delta: 29.4MB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. [2025-02-08 08:11:50,246 INFO L158 Benchmark]: CDTParser took 3.43ms. Allocated memory is still 201.3MB. Free memory is still 126.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:11:50,246 INFO L158 Benchmark]: CACSL2BoogieTranslator took 354.21ms. Allocated memory is still 167.8MB. Free memory was 126.0MB in the beginning and 106.1MB in the end (delta: 19.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-08 08:11:50,246 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.80ms. Allocated memory is still 167.8MB. Free memory was 106.1MB in the beginning and 104.0MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:11:50,247 INFO L158 Benchmark]: Boogie Preprocessor took 23.99ms. Allocated memory is still 167.8MB. Free memory was 104.0MB in the beginning and 102.0MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:11:50,247 INFO L158 Benchmark]: IcfgBuilder took 675.04ms. Allocated memory is still 167.8MB. Free memory was 102.0MB in the beginning and 109.7MB in the end (delta: -7.7MB). Peak memory consumption was 73.9MB. Max. memory is 16.1GB. [2025-02-08 08:11:50,247 INFO L158 Benchmark]: TraceAbstraction took 70.23ms. Allocated memory is still 167.8MB. Free memory was 109.7MB in the beginning and 96.6MB in the end (delta: 13.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 08:11:50,248 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.43ms. Allocated memory is still 201.3MB. Free memory is still 126.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 354.21ms. Allocated memory is still 167.8MB. Free memory was 126.0MB in the beginning and 106.1MB in the end (delta: 19.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.80ms. Allocated memory is still 167.8MB. Free memory was 106.1MB in the beginning and 104.0MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.99ms. Allocated memory is still 167.8MB. Free memory was 104.0MB in the beginning and 102.0MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 675.04ms. Allocated memory is still 167.8MB. Free memory was 102.0MB in the beginning and 109.7MB in the end (delta: -7.7MB). Peak memory consumption was 73.9MB. Max. memory is 16.1GB. * TraceAbstraction took 70.23ms. Allocated memory is still 167.8MB. Free memory was 109.7MB in the beginning and 96.6MB in the end (delta: 13.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: Cannot invoke "de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.structure.IcfgLocation.equals(Object)" because the return value of "java.util.Map.get(Object)" is null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: Cannot invoke "de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.structure.IcfgLocation.equals(Object)" because the return value of "java.util.Map.get(Object)" is null: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.ProcedureMultiplier.constructLocationCopy(ProcedureMultiplier.java:348) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2025-02-08 08:11:50,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-ext/04_incdec_cas.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a9295efc0d8bacfc5fb202511f0d3721ae5554ffb4def47cf5dbf45088356869 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:11:52,307 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:11:52,398 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-08 08:11:52,405 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:11:52,405 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:11:52,433 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:11:52,433 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:11:52,435 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:11:52,435 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:11:52,436 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:11:52,436 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:11:52,436 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:11:52,436 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:11:52,437 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:11:52,437 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:11:52,437 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:11:52,437 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:11:52,437 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:11:52,437 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:11:52,437 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:11:52,437 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:11:52,437 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:11:52,437 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:11:52,438 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:11:52,438 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:11:52,438 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-08 08:11:52,438 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-08 08:11:52,438 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:11:52,438 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:11:52,438 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:11:52,438 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:11:52,438 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:11:52,438 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:11:52,438 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:11:52,439 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:11:52,439 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:11:52,439 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:11:52,439 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:11:52,439 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-08 08:11:52,439 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-08 08:11:52,439 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:11:52,439 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:11:52,439 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:11:52,439 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:11:52,440 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> a9295efc0d8bacfc5fb202511f0d3721ae5554ffb4def47cf5dbf45088356869 [2025-02-08 08:11:52,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:11:52,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:11:52,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:11:52,720 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:11:52,720 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:11:52,725 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/04_incdec_cas.i [2025-02-08 08:11:54,050 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0573391e1/38708087db594c838a28a8191efab624/FLAG166ff5b0e [2025-02-08 08:11:54,345 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:11:54,346 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/04_incdec_cas.i [2025-02-08 08:11:54,360 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0573391e1/38708087db594c838a28a8191efab624/FLAG166ff5b0e [2025-02-08 08:11:54,655 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0573391e1/38708087db594c838a28a8191efab624 [2025-02-08 08:11:54,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:11:54,658 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:11:54,660 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:11:54,660 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:11:54,663 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:11:54,664 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:11:54" (1/1) ... [2025-02-08 08:11:54,666 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33ba0661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:54, skipping insertion in model container [2025-02-08 08:11:54,666 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:11:54" (1/1) ... [2025-02-08 08:11:54,714 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:11:55,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:11:55,119 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:11:55,183 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:11:55,243 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:11:55,244 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:55 WrapperNode [2025-02-08 08:11:55,244 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:11:55,245 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:11:55,245 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:11:55,245 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:11:55,249 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:55" (1/1) ... [2025-02-08 08:11:55,272 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:55" (1/1) ... [2025-02-08 08:11:55,307 INFO L138 Inliner]: procedures = 178, calls = 46, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 159 [2025-02-08 08:11:55,308 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:11:55,309 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:11:55,309 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:11:55,309 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:11:55,322 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:55" (1/1) ... [2025-02-08 08:11:55,323 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:55" (1/1) ... [2025-02-08 08:11:55,332 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:55" (1/1) ... [2025-02-08 08:11:55,363 INFO L175 MemorySlicer]: Split 23 memory accesses to 4 slices as follows [6, 2, 6, 9]. 39 percent of accesses are in the largest equivalence class. The 5 initializations are split as follows [0, 2, 2, 1]. The 8 writes are split as follows [4, 0, 2, 2]. [2025-02-08 08:11:55,363 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:55" (1/1) ... [2025-02-08 08:11:55,363 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:55" (1/1) ... [2025-02-08 08:11:55,382 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:55" (1/1) ... [2025-02-08 08:11:55,383 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:55" (1/1) ... [2025-02-08 08:11:55,393 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:55" (1/1) ... [2025-02-08 08:11:55,394 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:55" (1/1) ... [2025-02-08 08:11:55,404 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:11:55,405 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:11:55,409 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:11:55,409 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:11:55,410 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:55" (1/1) ... [2025-02-08 08:11:55,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:11:55,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:55,456 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 08:11:55,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 08:11:55,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-02-08 08:11:55,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-02-08 08:11:55,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-02-08 08:11:55,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2025-02-08 08:11:55,481 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-02-08 08:11:55,481 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-02-08 08:11:55,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 08:11:55,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:11:55,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 08:11:55,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 08:11:55,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-02-08 08:11:55,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-02-08 08:11:55,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-02-08 08:11:55,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2025-02-08 08:11:55,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-08 08:11:55,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-02-08 08:11:55,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-02-08 08:11:55,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2025-02-08 08:11:55,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2025-02-08 08:11:55,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2025-02-08 08:11:55,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2025-02-08 08:11:55,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2025-02-08 08:11:55,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 08:11:55,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:11:55,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:11:55,484 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 08:11:55,626 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:11:55,627 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:11:55,937 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L731: havoc dec_~#dec__casret~0#1.base, dec_~#dec__casret~0#1.offset; [2025-02-08 08:11:55,937 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L731-1: SUMMARY for call ULTIMATE.dealloc(dec_~#dec__casret~0#1.base, dec_~#dec__casret~0#1.offset); srcloc: null [2025-02-08 08:11:55,937 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L748: assume { :end_inline_inc } true;havoc #t~ret15#1; [2025-02-08 08:11:55,938 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L748-1: havoc inc_#t~mem7#1, inc_#t~mem8#1, inc_~inc__v~0#1, inc_~inc__vn~0#1, inc_~#inc__casret~0#1.base, inc_~#inc__casret~0#1.offset; [2025-02-08 08:11:55,938 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L748-2: #t~ret15#1 := inc_#res#1; [2025-02-08 08:11:55,938 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L749: assume { :end_inline_dec } true;havoc #t~ret16#1; [2025-02-08 08:11:55,938 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L749-1: havoc dec_#t~mem12#1, dec_#t~mem13#1, dec_~dec__v~0#1, dec_~dec__vn~0#1, dec_~#dec__casret~0#1.base, dec_~#dec__casret~0#1.offset; [2025-02-08 08:11:55,938 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L749-2: #t~ret16#1 := dec_#res#1; [2025-02-08 08:11:55,938 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L750: #res#1.base, #res#1.offset := 0bv32, 0bv32; [2025-02-08 08:11:55,938 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint thr1FINAL: assume true; [2025-02-08 08:11:55,938 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L711: havoc inc_~#inc__casret~0#1.base, inc_~#inc__casret~0#1.offset; [2025-02-08 08:11:55,938 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L711-1: SUMMARY for call ULTIMATE.dealloc(inc_~#inc__casret~0#1.base, inc_~#inc__casret~0#1.offset); srcloc: null [2025-02-08 08:11:55,961 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 08:11:55,961 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:11:56,266 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:11:56,266 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 08:11:56,267 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:11:56 BoogieIcfgContainer [2025-02-08 08:11:56,267 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:11:56,269 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:11:56,269 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:11:56,272 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:11:56,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:11:54" (1/3) ... [2025-02-08 08:11:56,273 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267f9a8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:11:56, skipping insertion in model container [2025-02-08 08:11:56,273 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:55" (2/3) ... [2025-02-08 08:11:56,274 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267f9a8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:11:56, skipping insertion in model container [2025-02-08 08:11:56,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:11:56" (3/3) ... [2025-02-08 08:11:56,275 INFO L128 eAbstractionObserver]: Analyzing ICFG 04_incdec_cas.i [2025-02-08 08:11:56,284 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:11:56,286 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 04_incdec_cas.i that has 2 procedures, 66 locations, 1 initial locations, 3 loop locations, and 39 error locations. [2025-02-08 08:11:56,286 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 08:11:56,339 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException: Cannot invoke "de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.structure.IcfgLocation.equals(Object)" because the return value of "java.util.Map.get(Object)" is null at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.ProcedureMultiplier.constructLocationCopy(ProcedureMultiplier.java:348) at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1228) at de.uni_freiburg.informatik.ultimate.util.datastructures.BidirectionalMap.computeIfAbsent(BidirectionalMap.java:189) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.ProcedureMultiplier.getOrConstructLocationCopy(ProcedureMultiplier.java:334) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.ProcedureMultiplier.duplicateProcedureEdges(ProcedureMultiplier.java:221) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.ProcedureMultiplier.(ProcedureMultiplier.java:133) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.ProcedureMultiplier.(ProcedureMultiplier.java:114) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.ProcedureMultiplier.duplicateProcedures(ProcedureMultiplier.java:143) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.IcfgPetrifier.(IcfgPetrifier.java:104) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.petrify(TraceAbstractionStarter.java:492) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) 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) [2025-02-08 08:11:56,346 INFO L158 Benchmark]: Toolchain (without parser) took 1686.06ms. Allocated memory is still 83.9MB. Free memory was 58.5MB in the beginning and 29.3MB in the end (delta: 29.2MB). Peak memory consumption was 33.1MB. Max. memory is 16.1GB. [2025-02-08 08:11:56,346 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 83.9MB. Free memory was 62.2MB in the beginning and 62.2MB in the end (delta: 35.7kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:11:56,347 INFO L158 Benchmark]: CACSL2BoogieTranslator took 584.46ms. Allocated memory is still 83.9MB. Free memory was 58.5MB in the beginning and 37.9MB in the end (delta: 20.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 08:11:56,347 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.14ms. Allocated memory is still 83.9MB. Free memory was 37.9MB in the beginning and 35.6MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:11:56,347 INFO L158 Benchmark]: Boogie Preprocessor took 95.86ms. Allocated memory is still 83.9MB. Free memory was 35.6MB in the beginning and 33.2MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:11:56,347 INFO L158 Benchmark]: IcfgBuilder took 861.87ms. Allocated memory is still 83.9MB. Free memory was 33.2MB in the beginning and 46.1MB in the end (delta: -12.9MB). Peak memory consumption was 29.9MB. Max. memory is 16.1GB. [2025-02-08 08:11:56,347 INFO L158 Benchmark]: TraceAbstraction took 74.65ms. Allocated memory is still 83.9MB. Free memory was 45.7MB in the beginning and 29.3MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 08:11:56,351 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 83.9MB. Free memory was 62.2MB in the beginning and 62.2MB in the end (delta: 35.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 584.46ms. Allocated memory is still 83.9MB. Free memory was 58.5MB in the beginning and 37.9MB in the end (delta: 20.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.14ms. Allocated memory is still 83.9MB. Free memory was 37.9MB in the beginning and 35.6MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 95.86ms. Allocated memory is still 83.9MB. Free memory was 35.6MB in the beginning and 33.2MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 861.87ms. Allocated memory is still 83.9MB. Free memory was 33.2MB in the beginning and 46.1MB in the end (delta: -12.9MB). Peak memory consumption was 29.9MB. Max. memory is 16.1GB. * TraceAbstraction took 74.65ms. Allocated memory is still 83.9MB. Free memory was 45.7MB in the beginning and 29.3MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: Cannot invoke "de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.structure.IcfgLocation.equals(Object)" because the return value of "java.util.Map.get(Object)" is null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: Cannot invoke "de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.structure.IcfgLocation.equals(Object)" because the return value of "java.util.Map.get(Object)" is null: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.ProcedureMultiplier.constructLocationCopy(ProcedureMultiplier.java:348) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2025-02-08 08:11:56,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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: Cannot invoke "de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.structure.IcfgLocation.equals(Object)" because the return value of "java.util.Map.get(Object)" is null