./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.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/array-examples/data_structures_set_multi_proc_trivial_ground.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 0286582125bb2879636b8cf3b934bed172850a3a3b0d880c07306d10439134a7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 16:41:31,144 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 16:41:31,182 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 16:41:31,187 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 16:41:31,187 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 16:41:31,204 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 16:41:31,205 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 16:41:31,205 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 16:41:31,206 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 16:41:31,206 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 16:41:31,206 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 16:41:31,206 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 16:41:31,206 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 16:41:31,207 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 16:41:31,207 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 16:41:31,207 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 16:41:31,207 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 16:41:31,207 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 16:41:31,207 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 16:41:31,207 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 16:41:31,208 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 16:41:31,208 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 16:41:31,208 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 16:41:31,208 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 16:41:31,208 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 16:41:31,208 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 16:41:31,208 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 16:41:31,208 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 16:41:31,209 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 16:41:31,209 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 16:41:31,209 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 16:41:31,209 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 16:41:31,209 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 16:41:31,209 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 16:41:31,209 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 16:41:31,210 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 16:41:31,210 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 16:41:31,210 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 16:41:31,210 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 16:41:31,210 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 16:41:31,210 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 16:41:31,210 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 16:41:31,210 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 16:41:31,210 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 -> 0286582125bb2879636b8cf3b934bed172850a3a3b0d880c07306d10439134a7 [2025-02-07 16:41:31,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 16:41:31,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 16:41:31,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 16:41:31,444 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 16:41:31,444 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 16:41:31,445 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i [2025-02-07 16:41:32,569 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/450a4d31f/82defb2b2b58422fb91340cb3673a6f7/FLAG93219e9bf [2025-02-07 16:41:32,761 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 16:41:32,761 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i [2025-02-07 16:41:32,768 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/450a4d31f/82defb2b2b58422fb91340cb3673a6f7/FLAG93219e9bf [2025-02-07 16:41:33,130 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/450a4d31f/82defb2b2b58422fb91340cb3673a6f7 [2025-02-07 16:41:33,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 16:41:33,133 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 16:41:33,136 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 16:41:33,136 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 16:41:33,139 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 16:41:33,139 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 04:41:33" (1/1) ... [2025-02-07 16:41:33,140 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f3466a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:41:33, skipping insertion in model container [2025-02-07 16:41:33,142 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 04:41:33" (1/1) ... [2025-02-07 16:41:33,154 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 16:41:33,255 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/array-examples/data_structures_set_multi_proc_trivial_ground.i[838,851] [2025-02-07 16:41:33,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 16:41:33,284 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 16:41:33,292 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/array-examples/data_structures_set_multi_proc_trivial_ground.i[838,851] [2025-02-07 16:41:33,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 16:41:33,318 INFO L204 MainTranslator]: Completed translation [2025-02-07 16:41:33,319 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:41:33 WrapperNode [2025-02-07 16:41:33,320 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 16:41:33,321 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 16:41:33,321 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 16:41:33,321 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 16:41:33,325 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:41:33" (1/1) ... [2025-02-07 16:41:33,331 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:41:33" (1/1) ... [2025-02-07 16:41:33,349 INFO L138 Inliner]: procedures = 18, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 129 [2025-02-07 16:41:33,351 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 16:41:33,351 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 16:41:33,352 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 16:41:33,352 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 16:41:33,357 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:41:33" (1/1) ... [2025-02-07 16:41:33,358 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:41:33" (1/1) ... [2025-02-07 16:41:33,359 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:41:33" (1/1) ... [2025-02-07 16:41:33,368 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 3, 9]. 64 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 3 writes are split as follows [0, 1, 2]. [2025-02-07 16:41:33,368 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:41:33" (1/1) ... [2025-02-07 16:41:33,368 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:41:33" (1/1) ... [2025-02-07 16:41:33,373 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:41:33" (1/1) ... [2025-02-07 16:41:33,378 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:41:33" (1/1) ... [2025-02-07 16:41:33,382 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:41:33" (1/1) ... [2025-02-07 16:41:33,382 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:41:33" (1/1) ... [2025-02-07 16:41:33,383 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 16:41:33,384 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 16:41:33,384 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 16:41:33,384 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 16:41:33,387 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:41:33" (1/1) ... [2025-02-07 16:41:33,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 16:41:33,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:41:33,409 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 16:41:33,411 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 16:41:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 16:41:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 16:41:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-07 16:41:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-07 16:41:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-07 16:41:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-07 16:41:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-07 16:41:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-07 16:41:33,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 16:41:33,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 16:41:33,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-07 16:41:33,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-07 16:41:33,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-07 16:41:33,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-07 16:41:33,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-07 16:41:33,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-07 16:41:33,498 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 16:41:33,499 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 16:41:33,651 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L29: call ULTIMATE.dealloc(main_~#set~0#1.base, main_~#set~0#1.offset);havoc main_~#set~0#1.base, main_~#set~0#1.offset;call ULTIMATE.dealloc(main_~#values~0#1.base, main_~#values~0#1.offset);havoc main_~#values~0#1.base, main_~#values~0#1.offset; [2025-02-07 16:41:33,652 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L56: assume main_~y~0#1 < main_~n~0#1;call main_#t~mem15#1 := read~int#2(main_~#set~0#1.base, main_~#set~0#1.offset + 4 * main_~x~0#1, 4);call main_#t~mem16#1 := read~int#2(main_~#set~0#1.base, main_~#set~0#1.offset + 4 * main_~y~0#1, 4); [2025-02-07 16:41:33,652 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L56: assume !(main_~y~0#1 < main_~n~0#1);main_#t~post18#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post18#1;havoc main_#t~post18#1; [2025-02-07 16:41:33,652 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L52: assume 0 != main_#t~ret12#1;havoc main_#t~mem11#1;havoc main_#t~ret12#1;call main_#t~mem13#1 := read~int#1(main_~#values~0#1.base, main_~#values~0#1.offset + 4 * main_~v~0#1, 4);assume { :begin_inline_insert } true;insert_#in~set#1.base, insert_#in~set#1.offset, insert_#in~size#1, insert_#in~value#1 := main_~#set~0#1.base, main_~#set~0#1.offset, main_~n~0#1, main_#t~mem13#1;havoc insert_#res#1;havoc insert_~set#1.base, insert_~set#1.offset, insert_~size#1, insert_~value#1;insert_~set#1.base, insert_~set#1.offset := insert_#in~set#1.base, insert_#in~set#1.offset;insert_~size#1 := insert_#in~size#1;insert_~value#1 := insert_#in~value#1;call write~int#2(insert_~value#1, insert_~set#1.base, insert_~set#1.offset + 4 * insert_~size#1, 4);insert_#res#1 := 1 + insert_~size#1; [2025-02-07 16:41:33,652 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L52: assume !(0 != main_#t~ret12#1);havoc main_#t~mem11#1;havoc main_#t~ret12#1; [2025-02-07 16:41:33,652 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L52-1: main_#t~ret12#1 := elem_exists_#res#1;havoc elem_exists_#t~mem1#1, elem_exists_#t~post2#1, elem_exists_~set#1.base, elem_exists_~set#1.offset, elem_exists_~size#1, elem_exists_~value#1, elem_exists_~i~0#1;havoc elem_exists_#in~set#1.base, elem_exists_#in~set#1.offset, elem_exists_#in~size#1, elem_exists_#in~value#1;assume { :end_inline_elem_exists } true;assume -2147483648 <= main_#t~ret12#1 && main_#t~ret12#1 <= 2147483647; [2025-02-07 16:41:33,652 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L57: havoc main_#t~mem15#1;havoc main_#t~mem16#1;main_#t~post17#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post17#1;havoc main_#t~post17#1; [2025-02-07 16:41:33,652 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L57-1: SUMMARY for call __VERIFIER_assert((if main_#t~mem15#1 != main_#t~mem16#1 then 1 else 0)); srcloc: null [2025-02-07 16:41:33,653 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L55: assume main_~x~0#1 < main_~n~0#1;main_~y~0#1 := 1 + main_~x~0#1; [2025-02-07 16:41:33,653 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L55: assume !(main_~x~0#1 < main_~n~0#1);main_#t~post19#1 := main_~v~0#1;main_~v~0#1 := 1 + main_#t~post19#1;havoc main_#t~post19#1; [2025-02-07 16:41:33,653 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L55-1: main_~x~0#1 := 0; [2025-02-07 16:41:33,653 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L53: main_#t~ret14#1 := insert_#res#1;havoc insert_~set#1.base, insert_~set#1.offset, insert_~size#1, insert_~value#1;havoc insert_#in~set#1.base, insert_#in~set#1.offset, insert_#in~size#1, insert_#in~value#1;assume { :end_inline_insert } true;assume -2147483648 <= main_#t~ret14#1 && main_#t~ret14#1 <= 2147483647;main_~n~0#1 := main_#t~ret14#1;havoc main_#t~mem13#1;havoc main_#t~ret14#1; [2025-02-07 16:41:33,665 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2025-02-07 16:41:33,665 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 16:41:33,675 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 16:41:33,675 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 16:41:33,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 04:41:33 BoogieIcfgContainer [2025-02-07 16:41:33,676 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 16:41:33,677 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 16:41:33,677 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 16:41:33,682 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 16:41:33,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 04:41:33" (1/3) ... [2025-02-07 16:41:33,682 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70382472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 04:41:33, skipping insertion in model container [2025-02-07 16:41:33,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:41:33" (2/3) ... [2025-02-07 16:41:33,682 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70382472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 04:41:33, skipping insertion in model container [2025-02-07 16:41:33,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 04:41:33" (3/3) ... [2025-02-07 16:41:33,683 INFO L128 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2025-02-07 16:41:33,695 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 16:41:33,697 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG data_structures_set_multi_proc_trivial_ground.i that has 2 procedures, 24 locations, 1 initial locations, 10 loop locations, and 1 error locations. [2025-02-07 16:41:33,740 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 16:41:33,751 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;@49e415aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 16:41:33,751 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 16:41:33,754 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 20 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-07 16:41:33,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-07 16:41:33,758 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:41:33,759 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:41:33,759 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:41:33,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:41:33,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1990125607, now seen corresponding path program 1 times [2025-02-07 16:41:33,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:41:33,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610387161] [2025-02-07 16:41:33,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:41:33,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:41:33,827 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-07 16:41:33,841 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-07 16:41:33,842 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:41:33,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:41:33,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:41:33,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:41:33,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610387161] [2025-02-07 16:41:33,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610387161] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 16:41:33,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 16:41:33,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-07 16:41:33,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908870496] [2025-02-07 16:41:33,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 16:41:33,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-07 16:41:33,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:41:33,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-07 16:41:33,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 16:41:33,951 INFO L87 Difference]: Start difference. First operand has 24 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 20 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:41:34,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:41:34,003 INFO L93 Difference]: Finished difference Result 55 states and 83 transitions. [2025-02-07 16:41:34,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-07 16:41:34,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-02-07 16:41:34,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:41:34,012 INFO L225 Difference]: With dead ends: 55 [2025-02-07 16:41:34,013 INFO L226 Difference]: Without dead ends: 27 [2025-02-07 16:41:34,015 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 16:41:34,019 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:41:34,021 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 44 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:41:34,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-02-07 16:41:34,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2025-02-07 16:41:34,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-07 16:41:34,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2025-02-07 16:41:34,051 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 8 [2025-02-07 16:41:34,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:41:34,052 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2025-02-07 16:41:34,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:41:34,052 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2025-02-07 16:41:34,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-07 16:41:34,053 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:41:34,053 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:41:34,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-07 16:41:34,053 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:41:34,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:41:34,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1081783361, now seen corresponding path program 1 times [2025-02-07 16:41:34,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:41:34,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777811798] [2025-02-07 16:41:34,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:41:34,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:41:34,062 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-07 16:41:34,072 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-07 16:41:34,074 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:41:34,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:41:34,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:41:34,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:41:34,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777811798] [2025-02-07 16:41:34,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777811798] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:41:34,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189541286] [2025-02-07 16:41:34,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:41:34,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:41:34,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:41:34,132 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 16:41:34,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-07 16:41:34,171 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-07 16:41:34,184 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-07 16:41:34,185 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:41:34,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:41:34,187 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-07 16:41:34,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:41:34,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:41:34,213 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:41:34,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:41:34,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189541286] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:41:34,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:41:34,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2025-02-07 16:41:34,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124483580] [2025-02-07 16:41:34,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:41:34,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-07 16:41:34,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:41:34,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-07 16:41:34,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-07 16:41:34,240 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:41:34,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:41:34,340 INFO L93 Difference]: Finished difference Result 70 states and 104 transitions. [2025-02-07 16:41:34,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-07 16:41:34,340 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-02-07 16:41:34,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:41:34,342 INFO L225 Difference]: With dead ends: 70 [2025-02-07 16:41:34,342 INFO L226 Difference]: Without dead ends: 54 [2025-02-07 16:41:34,342 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-07 16:41:34,343 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 39 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 16:41:34,343 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 50 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 16:41:34,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2025-02-07 16:41:34,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 22. [2025-02-07 16:41:34,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-07 16:41:34,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2025-02-07 16:41:34,351 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 9 [2025-02-07 16:41:34,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:41:34,351 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2025-02-07 16:41:34,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:41:34,351 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2025-02-07 16:41:34,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-07 16:41:34,351 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:41:34,351 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:41:34,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-07 16:41:34,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:41:34,552 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:41:34,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:41:34,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1360589273, now seen corresponding path program 2 times [2025-02-07 16:41:34,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:41:34,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041930900] [2025-02-07 16:41:34,553 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 16:41:34,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:41:34,564 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 12 statements into 2 equivalence classes. [2025-02-07 16:41:34,570 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 12 statements. [2025-02-07 16:41:34,573 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-07 16:41:34,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:41:34,629 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-07 16:41:34,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:41:34,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041930900] [2025-02-07 16:41:34,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041930900] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 16:41:34,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 16:41:34,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-07 16:41:34,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116705565] [2025-02-07 16:41:34,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 16:41:34,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 16:41:34,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:41:34,631 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 16:41:34,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-07 16:41:34,631 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:41:34,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:41:34,639 INFO L93 Difference]: Finished difference Result 26 states and 34 transitions. [2025-02-07 16:41:34,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 16:41:34,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-02-07 16:41:34,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:41:34,640 INFO L225 Difference]: With dead ends: 26 [2025-02-07 16:41:34,640 INFO L226 Difference]: Without dead ends: 0 [2025-02-07 16:41:34,640 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-07 16:41:34,641 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 3 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:41:34,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 7 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:41:34,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-02-07 16:41:34,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-02-07 16:41:34,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 16:41:34,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-02-07 16:41:34,642 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2025-02-07 16:41:34,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:41:34,642 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-07 16:41:34,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:41:34,642 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-02-07 16:41:34,642 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-02-07 16:41:34,644 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-02-07 16:41:34,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-07 16:41:34,646 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1] [2025-02-07 16:41:34,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-02-07 16:41:34,670 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-07 16:41:34,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 04:41:34 BoogieIcfgContainer [2025-02-07 16:41:34,678 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-07 16:41:34,678 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-07 16:41:34,678 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-07 16:41:34,679 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-07 16:41:34,679 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 04:41:33" (3/4) ... [2025-02-07 16:41:34,680 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-07 16:41:34,682 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2025-02-07 16:41:34,684 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2025-02-07 16:41:34,684 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-02-07 16:41:34,685 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-02-07 16:41:34,685 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-07 16:41:34,745 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-07 16:41:34,745 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-07 16:41:34,745 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-07 16:41:34,746 INFO L158 Benchmark]: Toolchain (without parser) took 1612.22ms. Allocated memory is still 142.6MB. Free memory was 114.1MB in the beginning and 101.1MB in the end (delta: 13.0MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2025-02-07 16:41:34,746 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 124.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 16:41:34,746 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.11ms. Allocated memory is still 142.6MB. Free memory was 114.1MB in the beginning and 101.9MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-07 16:41:34,746 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.16ms. Allocated memory is still 142.6MB. Free memory was 101.9MB in the beginning and 100.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 16:41:34,746 INFO L158 Benchmark]: Boogie Preprocessor took 32.13ms. Allocated memory is still 142.6MB. Free memory was 100.4MB in the beginning and 99.2MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-07 16:41:34,746 INFO L158 Benchmark]: IcfgBuilder took 291.86ms. Allocated memory is still 142.6MB. Free memory was 98.7MB in the beginning and 83.3MB in the end (delta: 15.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-07 16:41:34,747 INFO L158 Benchmark]: TraceAbstraction took 1000.59ms. Allocated memory is still 142.6MB. Free memory was 82.9MB in the beginning and 107.1MB in the end (delta: -24.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 16:41:34,748 INFO L158 Benchmark]: Witness Printer took 66.80ms. Allocated memory is still 142.6MB. Free memory was 107.1MB in the beginning and 101.1MB in the end (delta: 6.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-07 16:41:34,750 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 124.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 185.11ms. Allocated memory is still 142.6MB. Free memory was 114.1MB in the beginning and 101.9MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.16ms. Allocated memory is still 142.6MB. Free memory was 101.9MB in the beginning and 100.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.13ms. Allocated memory is still 142.6MB. Free memory was 100.4MB in the beginning and 99.2MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 291.86ms. Allocated memory is still 142.6MB. Free memory was 98.7MB in the beginning and 83.3MB in the end (delta: 15.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1000.59ms. Allocated memory is still 142.6MB. Free memory was 82.9MB in the beginning and 107.1MB in the end (delta: -24.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 66.80ms. Allocated memory is still 142.6MB. Free memory was 107.1MB in the beginning and 101.1MB in the end (delta: 6.0MB). 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: 13]: 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 2 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 58 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 48 mSDsluCounter, 101 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 51 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 67 IncrementalHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 50 mSDtfsCounter, 67 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 40 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 38 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 72 SizeOfPredicates, 0 NumberOfNonLiveVariables, 62 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 10/13 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 47]: Location Invariant Derived location invariant: (n == 0) - InvariantResult [Line: 61]: Location Invariant Derived location invariant: ((n == 0) && (x == 0)) - InvariantResult [Line: 51]: Location Invariant Derived location invariant: (n == 0) - InvariantResult [Line: 62]: Location Invariant Derived location invariant: 0 - InvariantResult [Line: 33]: Location Invariant Derived location invariant: (n == 0) - InvariantResult [Line: 40]: Location Invariant Derived location invariant: 0 - InvariantResult [Line: 39]: Location Invariant Derived location invariant: ((n == 0) && (x == 0)) RESULT: Ultimate proved your program to be correct! [2025-02-07 16:41:34,761 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