./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-nla/dijkstra2-both-nt.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-nla/dijkstra2-both-nt.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e7687da568dfe273ac225f01dbc8df1f76ef15d8b8e5d222cf6fab4c622d621 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:53:41,845 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:53:41,897 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2025-03-17 19:53:41,901 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:53:41,901 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:53:41,901 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.Remove goto edges from RCFG [2025-03-17 19:53:41,916 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:53:41,917 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:53:41,917 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:53:41,918 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:53:41,918 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:53:41,919 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:53:41,919 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:53:41,919 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:53:41,919 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-03-17 19:53:41,919 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-03-17 19:53:41,919 INFO L153 SettingsManager]: * Use old map elimination=false [2025-03-17 19:53:41,919 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-03-17 19:53:41,919 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-03-17 19:53:41,920 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-03-17 19:53:41,920 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:53:41,920 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-03-17 19:53:41,920 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:53:41,920 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:53:41,920 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:53:41,920 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:53:41,920 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-03-17 19:53:41,920 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-03-17 19:53:41,920 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-03-17 19:53:41,920 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:53:41,920 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:53:41,920 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:53:41,921 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-03-17 19:53:41,921 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:53:41,921 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:53:41,921 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:53:41,921 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:53:41,922 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:53:41,922 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:53:41,922 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-03-17 19:53:41,922 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) 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 -> 3e7687da568dfe273ac225f01dbc8df1f76ef15d8b8e5d222cf6fab4c622d621 [2025-03-17 19:53:42,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:53:42,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:53:42,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:53:42,151 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:53:42,151 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:53:42,153 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-nla/dijkstra2-both-nt.c [2025-03-17 19:53:43,346 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9276b663b/22a9cb22b6e948b895c8e8ffa6719506/FLAG482cd5799 [2025-03-17 19:53:43,572 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:53:43,573 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-nla/dijkstra2-both-nt.c [2025-03-17 19:53:43,580 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9276b663b/22a9cb22b6e948b895c8e8ffa6719506/FLAG482cd5799 [2025-03-17 19:53:43,913 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9276b663b/22a9cb22b6e948b895c8e8ffa6719506 [2025-03-17 19:53:43,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:53:43,917 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:53:43,918 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:53:43,918 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:53:43,921 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:53:43,922 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:53:43" (1/1) ... [2025-03-17 19:53:43,923 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d683ce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:53:43, skipping insertion in model container [2025-03-17 19:53:43,923 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:53:43" (1/1) ... [2025-03-17 19:53:43,933 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:53:44,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:53:44,019 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:53:44,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:53:44,043 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:53:44,044 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:53:44 WrapperNode [2025-03-17 19:53:44,044 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:53:44,044 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:53:44,045 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:53:44,045 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:53:44,049 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:53:44" (1/1) ... [2025-03-17 19:53:44,052 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:53:44" (1/1) ... [2025-03-17 19:53:44,062 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 25 [2025-03-17 19:53:44,063 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:53:44,064 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:53:44,064 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:53:44,064 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:53:44,069 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:53:44" (1/1) ... [2025-03-17 19:53:44,069 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:53:44" (1/1) ... [2025-03-17 19:53:44,071 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:53:44" (1/1) ... [2025-03-17 19:53:44,078 INFO L175 MemorySlicer]: No memory access in input program. [2025-03-17 19:53:44,079 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:53:44" (1/1) ... [2025-03-17 19:53:44,079 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:53:44" (1/1) ... [2025-03-17 19:53:44,080 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:53:44" (1/1) ... [2025-03-17 19:53:44,083 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:53:44" (1/1) ... [2025-03-17 19:53:44,084 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:53:44" (1/1) ... [2025-03-17 19:53:44,084 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:53:44" (1/1) ... [2025-03-17 19:53:44,085 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:53:44,086 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:53:44,087 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:53:44,087 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:53:44,088 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:53:44" (1/1) ... [2025-03-17 19:53:44,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:53:44,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:53:44,118 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-17 19:53:44,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2025-03-17 19:53:44,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:53:44,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:53:44,183 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:53:44,185 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:53:44,290 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2025-03-17 19:53:44,290 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:53:44,295 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:53:44,295 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:53:44,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:53:44 BoogieIcfgContainer [2025-03-17 19:53:44,295 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:53:44,296 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-03-17 19:53:44,296 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-03-17 19:53:44,299 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-03-17 19:53:44,300 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-17 19:53:44,300 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 17.03 07:53:43" (1/3) ... [2025-03-17 19:53:44,300 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@658aa2f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.03 07:53:44, skipping insertion in model container [2025-03-17 19:53:44,300 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-17 19:53:44,301 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:53:44" (2/3) ... [2025-03-17 19:53:44,301 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@658aa2f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.03 07:53:44, skipping insertion in model container [2025-03-17 19:53:44,301 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-17 19:53:44,301 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:53:44" (3/3) ... [2025-03-17 19:53:44,302 INFO L363 chiAutomizerObserver]: Analyzing ICFG dijkstra2-both-nt.c [2025-03-17 19:53:44,346 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-03-17 19:53:44,346 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-03-17 19:53:44,347 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-03-17 19:53:44,347 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-03-17 19:53:44,347 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-03-17 19:53:44,347 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-03-17 19:53:44,347 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-03-17 19:53:44,348 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-03-17 19:53:44,352 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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) [2025-03-17 19:53:44,361 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2025-03-17 19:53:44,362 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-17 19:53:44,362 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-17 19:53:44,365 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-03-17 19:53:44,365 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-03-17 19:53:44,365 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-03-17 19:53:44,365 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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) [2025-03-17 19:53:44,365 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2025-03-17 19:53:44,365 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-17 19:53:44,366 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-17 19:53:44,366 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-03-17 19:53:44,366 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-03-17 19:53:44,370 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~n~0#1, main_~p~0#1, main_~q~0#1, main_~r~0#1, main_~h~0#1;havoc main_~n~0#1;havoc main_~p~0#1;havoc main_~q~0#1;havoc main_~r~0#1;havoc main_~h~0#1;havoc main_#t~nondet0#1;main_~n~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := 0;main_~q~0#1 := 1;main_~r~0#1 := main_~n~0#1;main_~h~0#1 := 0;" "assume main_~q~0#1 > main_~n~0#1;" [2025-03-17 19:53:44,370 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~p~0#1 * main_~p~0#1 + main_~r~0#1 * main_~q~0#1 == main_~n~0#1 * main_~q~0#1;" "assume !(4 * (if main_~q~0#1 < 0 && 0 != main_~q~0#1 % 4 then 1 + main_~q~0#1 / 4 else main_~q~0#1 / 4) == main_~q~0#1 && 2 * (if main_~p~0#1 < 0 && 0 != main_~p~0#1 % 2 then 1 + main_~p~0#1 / 2 else main_~p~0#1 / 2) == main_~p~0#1);" [2025-03-17 19:53:44,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:53:44,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1247, now seen corresponding path program 1 times [2025-03-17 19:53:44,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:53:44,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219786687] [2025-03-17 19:53:44,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:53:44,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:53:44,428 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 19:53:44,435 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 19:53:44,435 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:53:44,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:53:44,435 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:53:44,437 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 19:53:44,438 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 19:53:44,438 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:53:44,438 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:53:44,448 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:53:44,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:53:44,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1120, now seen corresponding path program 1 times [2025-03-17 19:53:44,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:53:44,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838349728] [2025-03-17 19:53:44,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:53:44,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:53:44,454 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 19:53:44,465 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 19:53:44,465 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:53:44,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 19:53:44,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [529884481] [2025-03-17 19:53:44,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:53:44,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:53:44,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:53:44,469 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:53:44,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 19:53:44,493 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 19:53:44,502 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 19:53:44,502 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:53:44,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:53:44,502 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:53:44,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 19:53:44,506 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 19:53:44,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:53:44,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:53:44,513 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:53:44,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:53:44,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1198526, now seen corresponding path program 1 times [2025-03-17 19:53:44,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:53:44,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628658861] [2025-03-17 19:53:44,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:53:44,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:53:44,521 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 19:53:44,532 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 19:53:44,532 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:53:44,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 19:53:44,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1048362427] [2025-03-17 19:53:44,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:53:44,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:53:44,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:53:44,537 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:53:44,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 19:53:44,558 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 19:53:44,562 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 19:53:44,562 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:53:44,562 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:53:44,562 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:53:44,566 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 19:53:44,570 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 19:53:44,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:53:44,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:53:44,572 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:53:56,597 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2025-03-17 19:54:08,627 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-03-17 19:54:21,786 WARN L286 SmtUtils]: Spent 13.15s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 299] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2025-03-17 19:54:34,961 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-03-17 19:54:34,972 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 19:54:34,973 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 19:54:34,973 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:54:34,973 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:54:34,974 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:54:34,975 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 19:54:34,979 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 19:54:34,979 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:54:34,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:54:34,999 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.03 07:54:34 BoogieIcfgContainer [2025-03-17 19:54:34,999 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-03-17 19:54:34,999 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 19:54:34,999 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 19:54:35,000 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 19:54:35,000 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:53:44" (3/4) ... [2025-03-17 19:54:35,001 INFO L143 WitnessPrinter]: Generating witness for non-termination counterexample [2025-03-17 19:54:35,029 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-17 19:54:35,029 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 19:54:35,030 INFO L158 Benchmark]: Toolchain (without parser) took 51112.98ms. Allocated memory is still 142.6MB. Free memory was 104.2MB in the beginning and 47.4MB in the end (delta: 56.8MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2025-03-17 19:54:35,030 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 126.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:54:35,031 INFO L158 Benchmark]: CACSL2BoogieTranslator took 125.71ms. Allocated memory is still 142.6MB. Free memory was 104.2MB in the beginning and 94.4MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 19:54:35,031 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.83ms. Allocated memory is still 142.6MB. Free memory was 94.4MB in the beginning and 93.5MB in the end (delta: 913.0kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:54:35,031 INFO L158 Benchmark]: Boogie Preprocessor took 21.55ms. Allocated memory is still 142.6MB. Free memory was 93.5MB in the beginning and 92.4MB in the end (delta: 1.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 19:54:35,031 INFO L158 Benchmark]: IcfgBuilder took 209.56ms. Allocated memory is still 142.6MB. Free memory was 92.4MB in the beginning and 80.9MB in the end (delta: 11.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 19:54:35,032 INFO L158 Benchmark]: BuchiAutomizer took 50702.93ms. Allocated memory is still 142.6MB. Free memory was 80.9MB in the beginning and 49.4MB in the end (delta: 31.4MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-17 19:54:35,032 INFO L158 Benchmark]: Witness Printer took 29.67ms. Allocated memory is still 142.6MB. Free memory was 49.4MB in the beginning and 47.4MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:54:35,034 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 126.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 125.71ms. Allocated memory is still 142.6MB. Free memory was 104.2MB in the beginning and 94.4MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.83ms. Allocated memory is still 142.6MB. Free memory was 94.4MB in the beginning and 93.5MB in the end (delta: 913.0kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.55ms. Allocated memory is still 142.6MB. Free memory was 93.5MB in the beginning and 92.4MB in the end (delta: 1.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 209.56ms. Allocated memory is still 142.6MB. Free memory was 92.4MB in the beginning and 80.9MB in the end (delta: 11.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 50702.93ms. Allocated memory is still 142.6MB. Free memory was 80.9MB in the beginning and 49.4MB in the end (delta: 31.4MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 29.67ms. Allocated memory is still 142.6MB. Free memory was 49.4MB in the beginning and 47.4MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 50.6s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 50.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 41]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L22] int n, p, q, r, h; [L24] n = __VERIFIER_nondet_int() [L26] p = 0 [L27] q = 1 [L28] r = n [L29] h = 0 VAL [n=0, p=0, q=1, r=0] [L40] COND TRUE q > n VAL [n=0, p=0, q=1, r=0] Loop: [L41] COND TRUE p*p + r*q == n*q [L51] COND FALSE !(4 * (q / 4) == q && 2 * (p / 2) == p) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 41]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L22] int n, p, q, r, h; [L24] n = __VERIFIER_nondet_int() [L26] p = 0 [L27] q = 1 [L28] r = n [L29] h = 0 VAL [n=0, p=0, q=1, r=0] [L40] COND TRUE q > n VAL [n=0, p=0, q=1, r=0] Loop: [L41] COND TRUE p*p + r*q == n*q [L51] COND FALSE !(4 * (q / 4) == q && 2 * (p / 2) == p) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2025-03-17 19:54:35,048 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 19:54:35,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 19:54:35,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)