./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/list-simple/sll2n_remove_all.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/AutomizerReach.xml -i ../sv-benchmarks/c/list-simple/sll2n_remove_all.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bae9bfc842bb010963d083e19e9498cfd3af182f91f0b8fa56907786a4d462dd --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 20:11:59,295 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 20:11:59,368 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 20:11:59,373 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 20:11:59,373 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 20:11:59,402 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 20:11:59,402 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 20:11:59,403 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 20:11:59,403 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 20:11:59,403 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 20:11:59,403 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 20:11:59,403 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 20:11:59,404 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 20:11:59,404 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 20:11:59,405 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 20:11:59,406 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 20:11:59,406 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 20:11:59,406 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 20:11:59,406 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 20:11:59,406 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 20:11:59,407 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 20:11:59,407 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 20:11:59,407 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 20:11:59,407 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 20:11:59,407 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 20:11:59,407 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 20:11:59,407 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 20:11:59,407 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 20:11:59,407 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 20:11:59,408 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 20:11:59,408 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 20:11:59,408 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 20:11:59,408 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 20:11:59,408 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 20:11:59,409 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 20:11:59,409 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 20:11:59,409 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 20:11:59,409 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 20:11:59,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 20:11:59,409 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 20:11:59,409 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 20:11:59,409 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 20:11:59,409 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 20:11:59,410 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 ! 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 -> bae9bfc842bb010963d083e19e9498cfd3af182f91f0b8fa56907786a4d462dd [2025-02-07 20:11:59,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 20:11:59,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 20:11:59,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 20:11:59,726 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 20:11:59,727 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 20:11:59,728 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/sll2n_remove_all.i [2025-02-07 20:12:01,142 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e0d630146/cd1bb531424a4cdf981cf0def4f2d087/FLAG3cbc09801 [2025-02-07 20:12:01,429 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 20:12:01,430 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/list-simple/sll2n_remove_all.i [2025-02-07 20:12:01,441 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e0d630146/cd1bb531424a4cdf981cf0def4f2d087/FLAG3cbc09801 [2025-02-07 20:12:01,460 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e0d630146/cd1bb531424a4cdf981cf0def4f2d087 [2025-02-07 20:12:01,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 20:12:01,466 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 20:12:01,467 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 20:12:01,467 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 20:12:01,470 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 20:12:01,471 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 08:12:01" (1/1) ... [2025-02-07 20:12:01,471 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69a1f9b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:12:01, skipping insertion in model container [2025-02-07 20:12:01,471 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 08:12:01" (1/1) ... [2025-02-07 20:12:01,512 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 20:12:01,812 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/list-simple/sll2n_remove_all.i[23806,23819] [2025-02-07 20:12:01,816 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 20:12:01,826 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 20:12:01,877 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/list-simple/sll2n_remove_all.i[23806,23819] [2025-02-07 20:12:01,880 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 20:12:01,909 INFO L204 MainTranslator]: Completed translation [2025-02-07 20:12:01,910 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:12:01 WrapperNode [2025-02-07 20:12:01,910 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 20:12:01,912 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 20:12:01,912 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 20:12:01,912 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 20:12:01,918 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:12:01" (1/1) ... [2025-02-07 20:12:01,932 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:12:01" (1/1) ... [2025-02-07 20:12:01,954 INFO L138 Inliner]: procedures = 126, calls = 25, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 77 [2025-02-07 20:12:01,956 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 20:12:01,956 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 20:12:01,957 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 20:12:01,957 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 20:12:01,964 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:12:01" (1/1) ... [2025-02-07 20:12:01,964 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:12:01" (1/1) ... [2025-02-07 20:12:01,970 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:12:01" (1/1) ... [2025-02-07 20:12:01,992 INFO L175 MemorySlicer]: Split 11 memory accesses to 3 slices as follows [2, 4, 5]. 45 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1]. The 4 writes are split as follows [0, 3, 1]. [2025-02-07 20:12:01,993 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:12:01" (1/1) ... [2025-02-07 20:12:01,994 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:12:01" (1/1) ... [2025-02-07 20:12:02,003 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:12:01" (1/1) ... [2025-02-07 20:12:02,008 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:12:01" (1/1) ... [2025-02-07 20:12:02,010 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:12:01" (1/1) ... [2025-02-07 20:12:02,011 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:12:01" (1/1) ... [2025-02-07 20:12:02,017 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 20:12:02,017 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 20:12:02,018 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 20:12:02,018 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 20:12:02,020 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:12:01" (1/1) ... [2025-02-07 20:12:02,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 20:12:02,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:12:02,052 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) [2025-02-07 20:12:02,055 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 [2025-02-07 20:12:02,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-07 20:12:02,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-07 20:12:02,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-07 20:12:02,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-07 20:12:02,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 20:12:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-07 20:12:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-07 20:12:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-07 20:12:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-07 20:12:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-07 20:12:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-07 20:12:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-07 20:12:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-07 20:12:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-07 20:12:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-07 20:12:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-02-07 20:12:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 20:12:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-07 20:12:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-07 20:12:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 20:12:02,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 20:12:02,177 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 20:12:02,178 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 20:12:02,279 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L609: assume false;assume false;main_#res#1 := 1;call ULTIMATE.dealloc(main_~#s~0#1.base, main_~#s~0#1.offset);havoc main_~#s~0#1.base, main_~#s~0#1.offset; [2025-02-07 20:12:02,279 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L609: assume !false; [2025-02-07 20:12:02,279 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L577: havoc myexit_~s#1;havoc myexit_#in~s#1;assume { :end_inline_myexit } true; [2025-02-07 20:12:02,279 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L600: call ULTIMATE.dealloc(main_~#s~0#1.base, main_~#s~0#1.offset);havoc main_~#s~0#1.base, main_~#s~0#1.offset; [2025-02-07 20:12:02,279 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L586: sll_create_#t~ret4#1.base, sll_create_#t~ret4#1.offset := node_create_#res#1.base, node_create_#res#1.offset;havoc node_create_#t~malloc3#1.base, node_create_#t~malloc3#1.offset, node_create_~data#1, node_create_~temp~0#1.base, node_create_~temp~0#1.offset;havoc node_create_#in~data#1;assume { :end_inline_node_create } true;sll_create_~new_head~0#1.base, sll_create_~new_head~0#1.offset := sll_create_#t~ret4#1.base, sll_create_#t~ret4#1.offset;havoc sll_create_#t~ret4#1.base, sll_create_#t~ret4#1.offset;call write~$Pointer$#1(sll_create_~head~0#1.base, sll_create_~head~0#1.offset, sll_create_~new_head~0#1.base, 4 + sll_create_~new_head~0#1.offset, 4);sll_create_~head~0#1.base, sll_create_~head~0#1.offset := sll_create_~new_head~0#1.base, sll_create_~new_head~0#1.offset;havoc sll_create_~new_head~0#1.base, sll_create_~new_head~0#1.offset;sll_create_#t~post5#1 := sll_create_~len#1;sll_create_~len#1 := sll_create_#t~post5#1 - 1;havoc sll_create_#t~post5#1; [2025-02-07 20:12:02,291 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2025-02-07 20:12:02,291 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 20:12:02,297 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 20:12:02,297 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 20:12:02,297 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 08:12:02 BoogieIcfgContainer [2025-02-07 20:12:02,297 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 20:12:02,299 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 20:12:02,299 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 20:12:02,302 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 20:12:02,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 08:12:01" (1/3) ... [2025-02-07 20:12:02,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6283f11c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 08:12:02, skipping insertion in model container [2025-02-07 20:12:02,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:12:01" (2/3) ... [2025-02-07 20:12:02,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6283f11c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 08:12:02, skipping insertion in model container [2025-02-07 20:12:02,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 08:12:02" (3/3) ... [2025-02-07 20:12:02,304 INFO L128 eAbstractionObserver]: Analyzing ICFG sll2n_remove_all.i [2025-02-07 20:12:02,315 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 20:12:02,316 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG sll2n_remove_all.i that has 1 procedures, 12 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-02-07 20:12:02,358 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 20:12:02,369 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;@6ea904e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 20:12:02,369 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 20:12:02,374 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 8 states have (on average 1.5) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 20:12:02,379 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-02-07 20:12:02,382 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-02-07 20:12:02,387 INFO L422 BasicCegarLoop]: Path program histogram: [] [2025-02-07 20:12:02,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 8 states have (on average 1.5) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 20:12:02,408 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-07 20:12:02,414 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 08:12:02 BoogieIcfgContainer [2025-02-07 20:12:02,415 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-07 20:12:02,415 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-07 20:12:02,415 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-07 20:12:02,415 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-07 20:12:02,416 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 08:12:02" (3/4) ... [2025-02-07 20:12:02,418 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-07 20:12:02,423 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2025-02-07 20:12:02,423 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-02-07 20:12:02,423 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-02-07 20:12:02,423 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-07 20:12:02,508 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-07 20:12:02,509 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-07 20:12:02,509 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-07 20:12:02,510 INFO L158 Benchmark]: Toolchain (without parser) took 1044.55ms. Allocated memory is still 142.6MB. Free memory was 113.4MB in the beginning and 65.2MB in the end (delta: 48.2MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2025-02-07 20:12:02,510 INFO L158 Benchmark]: CDTParser took 0.66ms. Allocated memory is still 201.3MB. Free memory is still 123.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 20:12:02,511 INFO L158 Benchmark]: CACSL2BoogieTranslator took 444.63ms. Allocated memory is still 142.6MB. Free memory was 112.9MB in the beginning and 95.7MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-07 20:12:02,511 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.72ms. Allocated memory is still 142.6MB. Free memory was 95.7MB in the beginning and 93.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 20:12:02,511 INFO L158 Benchmark]: Boogie Preprocessor took 60.58ms. Allocated memory is still 142.6MB. Free memory was 93.9MB in the beginning and 92.1MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 20:12:02,512 INFO L158 Benchmark]: IcfgBuilder took 279.81ms. Allocated memory is still 142.6MB. Free memory was 92.1MB in the beginning and 78.4MB in the end (delta: 13.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-07 20:12:02,512 INFO L158 Benchmark]: TraceAbstraction took 115.89ms. Allocated memory is still 142.6MB. Free memory was 77.5MB in the beginning and 70.9MB in the end (delta: 6.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-07 20:12:02,513 INFO L158 Benchmark]: Witness Printer took 93.63ms. Allocated memory is still 142.6MB. Free memory was 70.9MB in the beginning and 65.2MB in the end (delta: 5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-07 20:12:02,514 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66ms. Allocated memory is still 201.3MB. Free memory is still 123.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 444.63ms. Allocated memory is still 142.6MB. Free memory was 112.9MB in the beginning and 95.7MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.72ms. Allocated memory is still 142.6MB. Free memory was 95.7MB in the beginning and 93.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 60.58ms. Allocated memory is still 142.6MB. Free memory was 93.9MB in the beginning and 92.1MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 279.81ms. Allocated memory is still 142.6MB. Free memory was 92.1MB in the beginning and 78.4MB in the end (delta: 13.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 115.89ms. Allocated memory is still 142.6MB. Free memory was 77.5MB in the beginning and 70.9MB in the end (delta: 6.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Witness Printer took 93.63ms. Allocated memory is still 142.6MB. Free memory was 70.9MB in the beginning and 65.2MB in the end (delta: 5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 609]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.0s, OverallIterations: 0, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-07 20:12:02,534 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: TRUE