./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/TwoFloatInterv.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-restricted-15/TwoFloatInterv.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-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 64bit --witnessprinter.graph.data.programhash 619980f24f1306727466f5c616de82a47a9f9fa9949a068930aef8a7aa603b17 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 08:04:13,776 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 08:04:13,843 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-17 08:04:13,848 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 08:04:13,849 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 08:04:13,850 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.Remove goto edges from RCFG [2024-11-17 08:04:13,870 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 08:04:13,871 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 08:04:13,871 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 08:04:13,872 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 08:04:13,872 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 08:04:13,873 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 08:04:13,873 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 08:04:13,873 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 08:04:13,874 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-17 08:04:13,874 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-17 08:04:13,874 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-17 08:04:13,875 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-17 08:04:13,875 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-17 08:04:13,875 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-17 08:04:13,876 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 08:04:13,876 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-17 08:04:13,876 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 08:04:13,877 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 08:04:13,878 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-17 08:04:13,878 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-17 08:04:13,879 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-17 08:04:13,879 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 08:04:13,879 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 08:04:13,879 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 08:04:13,879 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-17 08:04:13,880 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 08:04:13,880 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 08:04:13,880 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 08:04:13,880 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 08:04:13,881 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 08:04:13,881 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-17 08:04:13,883 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 619980f24f1306727466f5c616de82a47a9f9fa9949a068930aef8a7aa603b17 [2024-11-17 08:04:14,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 08:04:14,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 08:04:14,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 08:04:14,167 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 08:04:14,167 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 08:04:14,168 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/TwoFloatInterv.c [2024-11-17 08:04:15,605 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 08:04:15,794 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 08:04:15,795 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/TwoFloatInterv.c [2024-11-17 08:04:15,804 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6578d8830/8b0f5d921c6b489cae252e3b9909d119/FLAG2e1eb23ab [2024-11-17 08:04:15,821 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6578d8830/8b0f5d921c6b489cae252e3b9909d119 [2024-11-17 08:04:15,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 08:04:15,828 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 08:04:15,830 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 08:04:15,831 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 08:04:15,836 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 08:04:15,836 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 08:04:15" (1/1) ... [2024-11-17 08:04:15,837 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@568dadaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:04:15, skipping insertion in model container [2024-11-17 08:04:15,838 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 08:04:15" (1/1) ... [2024-11-17 08:04:15,857 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 08:04:16,044 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 08:04:16,051 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 08:04:16,062 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 08:04:16,075 INFO L204 MainTranslator]: Completed translation [2024-11-17 08:04:16,076 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:04:16 WrapperNode [2024-11-17 08:04:16,076 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 08:04:16,077 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 08:04:16,077 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 08:04:16,078 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 08:04:16,084 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:04:16" (1/1) ... [2024-11-17 08:04:16,089 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:04:16" (1/1) ... [2024-11-17 08:04:16,104 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 17 [2024-11-17 08:04:16,106 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 08:04:16,106 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 08:04:16,106 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 08:04:16,106 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 08:04:16,117 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:04:16" (1/1) ... [2024-11-17 08:04:16,117 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:04:16" (1/1) ... [2024-11-17 08:04:16,119 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:04:16" (1/1) ... [2024-11-17 08:04:16,124 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-17 08:04:16,125 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:04:16" (1/1) ... [2024-11-17 08:04:16,125 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:04:16" (1/1) ... [2024-11-17 08:04:16,126 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:04:16" (1/1) ... [2024-11-17 08:04:16,127 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:04:16" (1/1) ... [2024-11-17 08:04:16,127 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:04:16" (1/1) ... [2024-11-17 08:04:16,131 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:04:16" (1/1) ... [2024-11-17 08:04:16,133 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 08:04:16,133 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 08:04:16,134 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 08:04:16,134 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 08:04:16,134 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:04:16" (1/1) ... [2024-11-17 08:04:16,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:04:16,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:04:16,176 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) [2024-11-17 08:04:16,179 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 [2024-11-17 08:04:16,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 08:04:16,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 08:04:16,295 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 08:04:16,297 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 08:04:16,361 INFO L? ?]: Removed 3 outVars from TransFormulas that were not future-live. [2024-11-17 08:04:16,361 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 08:04:16,401 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 08:04:16,401 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 08:04:16,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 08:04:16 BoogieIcfgContainer [2024-11-17 08:04:16,401 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 08:04:16,402 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-17 08:04:16,402 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-17 08:04:16,430 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-17 08:04:16,432 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-17 08:04:16,433 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 17.11 08:04:15" (1/3) ... [2024-11-17 08:04:16,434 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@31060954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.11 08:04:16, skipping insertion in model container [2024-11-17 08:04:16,434 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-17 08:04:16,434 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:04:16" (2/3) ... [2024-11-17 08:04:16,435 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@31060954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.11 08:04:16, skipping insertion in model container [2024-11-17 08:04:16,435 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-17 08:04:16,435 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 08:04:16" (3/3) ... [2024-11-17 08:04:16,436 INFO L332 chiAutomizerObserver]: Analyzing ICFG TwoFloatInterv.c [2024-11-17 08:04:16,488 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-17 08:04:16,488 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-17 08:04:16,488 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-17 08:04:16,488 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-17 08:04:16,488 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-17 08:04:16,489 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-17 08:04:16,489 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-17 08:04:16,489 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-17 08:04:16,492 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 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) [2024-11-17 08:04:16,509 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-17 08:04:16,510 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-17 08:04:16,510 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-17 08:04:16,515 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-17 08:04:16,515 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2024-11-17 08:04:16,515 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-17 08:04:16,516 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 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) [2024-11-17 08:04:16,517 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-17 08:04:16,517 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-17 08:04:16,517 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-17 08:04:16,517 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-17 08:04:16,517 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2024-11-17 08:04:16,528 INFO L745 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 9#ULTIMATE.init_returnLabel#1true assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 2#L9true [2024-11-17 08:04:16,529 INFO L747 eck$LassoCheckResult]: Loop: 2#L9true assume true; 10#L9-1true assume !!(main_~i~0#1 > 0 && main_~i~0#1 < 50); 11#L10true assume main_~i~0#1 < 20;main_~i~0#1 := main_~i~0#1 - 1; 8#L13true assume main_~i~0#1 > 10;main_~i~0#1 := 1 + main_~i~0#1; 3#L16true assume 30 <= main_~i~0#1 && main_~i~0#1 <= 40;main_~i~0#1 := main_~i~0#1 - 1; 2#L9true [2024-11-17 08:04:16,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:04:16,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1408, now seen corresponding path program 1 times [2024-11-17 08:04:16,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:04:16,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451988330] [2024-11-17 08:04:16,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:04:16,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:04:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:04:16,621 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:04:16,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:04:16,645 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:04:16,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:04:16,650 INFO L85 PathProgramCache]: Analyzing trace with hash 39092677, now seen corresponding path program 1 times [2024-11-17 08:04:16,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:04:16,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453733078] [2024-11-17 08:04:16,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:04:16,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:04:16,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:04:16,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 08:04:16,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 08:04:16,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453733078] [2024-11-17 08:04:16,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453733078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 08:04:16,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 08:04:16,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 08:04:16,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625652253] [2024-11-17 08:04:16,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 08:04:16,766 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-17 08:04:16,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 08:04:16,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 08:04:16,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 08:04:16,801 INFO L87 Difference]: Start difference. First operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 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) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2024-11-17 08:04:16,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 08:04:16,871 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2024-11-17 08:04:16,872 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 26 transitions. [2024-11-17 08:04:16,873 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 14 [2024-11-17 08:04:16,877 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 16 states and 20 transitions. [2024-11-17 08:04:16,878 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2024-11-17 08:04:16,879 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2024-11-17 08:04:16,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 20 transitions. [2024-11-17 08:04:16,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-17 08:04:16,879 INFO L218 hiAutomatonCegarLoop]: Abstraction has 16 states and 20 transitions. [2024-11-17 08:04:16,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 20 transitions. [2024-11-17 08:04:16,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 12. [2024-11-17 08:04:16,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 11 states have internal predecessors, (16), 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) [2024-11-17 08:04:16,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2024-11-17 08:04:16,899 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 16 transitions. [2024-11-17 08:04:16,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 08:04:16,903 INFO L425 stractBuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2024-11-17 08:04:16,903 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-17 08:04:16,904 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2024-11-17 08:04:16,904 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2024-11-17 08:04:16,904 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-17 08:04:16,905 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-17 08:04:16,905 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-17 08:04:16,905 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2024-11-17 08:04:16,905 INFO L745 eck$LassoCheckResult]: Stem: 44#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 45#ULTIMATE.init_returnLabel#1 assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 48#L9 [2024-11-17 08:04:16,906 INFO L747 eck$LassoCheckResult]: Loop: 48#L9 assume true; 51#L9-1 assume !!(main_~i~0#1 > 0 && main_~i~0#1 < 50); 49#L10 assume !(main_~i~0#1 < 20); 50#L13 assume main_~i~0#1 > 10;main_~i~0#1 := 1 + main_~i~0#1; 52#L16 assume 30 <= main_~i~0#1 && main_~i~0#1 <= 40;main_~i~0#1 := main_~i~0#1 - 1; 48#L9 [2024-11-17 08:04:16,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:04:16,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1408, now seen corresponding path program 2 times [2024-11-17 08:04:16,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:04:16,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035819900] [2024-11-17 08:04:16,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:04:16,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:04:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:04:16,911 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:04:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:04:16,913 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:04:16,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:04:16,913 INFO L85 PathProgramCache]: Analyzing trace with hash 39093638, now seen corresponding path program 1 times [2024-11-17 08:04:16,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:04:16,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273759038] [2024-11-17 08:04:16,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:04:16,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:04:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:04:16,921 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:04:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:04:16,926 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:04:16,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:04:16,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1665603431, now seen corresponding path program 1 times [2024-11-17 08:04:16,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:04:16,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792334026] [2024-11-17 08:04:16,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:04:16,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:04:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:04:16,935 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:04:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:04:16,940 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:04:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:04:17,038 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:04:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:04:17,064 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.11 08:04:17 BoogieIcfgContainer [2024-11-17 08:04:17,064 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-17 08:04:17,064 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-17 08:04:17,065 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-17 08:04:17,065 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-17 08:04:17,065 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 08:04:16" (3/4) ... [2024-11-17 08:04:17,068 INFO L140 WitnessPrinter]: Generating witness for non-termination counterexample [2024-11-17 08:04:17,100 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-17 08:04:17,101 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-17 08:04:17,101 INFO L158 Benchmark]: Toolchain (without parser) took 1273.37ms. Allocated memory is still 188.7MB. Free memory was 120.5MB in the beginning and 127.9MB in the end (delta: -7.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 08:04:17,102 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 113.2MB. Free memory is still 74.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 08:04:17,102 INFO L158 Benchmark]: CACSL2BoogieTranslator took 245.99ms. Allocated memory is still 188.7MB. Free memory was 120.3MB in the beginning and 109.1MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-17 08:04:17,102 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.50ms. Allocated memory is still 188.7MB. Free memory was 108.9MB in the beginning and 107.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-17 08:04:17,103 INFO L158 Benchmark]: Boogie Preprocessor took 26.50ms. Allocated memory is still 188.7MB. Free memory was 107.7MB in the beginning and 106.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 08:04:17,104 INFO L158 Benchmark]: IcfgBuilder took 268.00ms. Allocated memory is still 188.7MB. Free memory was 106.4MB in the beginning and 160.8MB in the end (delta: -54.4MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2024-11-17 08:04:17,104 INFO L158 Benchmark]: BuchiAutomizer took 661.69ms. Allocated memory is still 188.7MB. Free memory was 160.8MB in the beginning and 129.2MB in the end (delta: 31.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-11-17 08:04:17,105 INFO L158 Benchmark]: Witness Printer took 36.26ms. Allocated memory is still 188.7MB. Free memory was 129.2MB in the beginning and 127.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-17 08:04:17,107 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 113.2MB. Free memory is still 74.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 245.99ms. Allocated memory is still 188.7MB. Free memory was 120.3MB in the beginning and 109.1MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.50ms. Allocated memory is still 188.7MB. Free memory was 108.9MB in the beginning and 107.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.50ms. Allocated memory is still 188.7MB. Free memory was 107.7MB in the beginning and 106.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 268.00ms. Allocated memory is still 188.7MB. Free memory was 106.4MB in the beginning and 160.8MB in the end (delta: -54.4MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. * BuchiAutomizer took 661.69ms. Allocated memory is still 188.7MB. Free memory was 160.8MB in the beginning and 129.2MB in the end (delta: 31.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 36.26ms. Allocated memory is still 188.7MB. Free memory was 129.2MB in the beginning and 127.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.1 modules have a trivial ranking function, the largest among these consists of 4 locations. The remainder module has 12 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.5s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations. 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: 0 mSolverCounterUnknown, 8 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 23 IncrementalHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 13 mSDtfsCounter, 23 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI1 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: 9]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() Loop: [L9] COND TRUE i > 0 && i < 50 [L10] COND FALSE !(i < 20) [L13] COND TRUE i > 10 [L14] i = i+1 [L16] COND TRUE 30 <= i && i <= 40 [L17] i = i-1 End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() Loop: [L9] COND TRUE i > 0 && i < 50 [L10] COND FALSE !(i < 20) [L13] COND TRUE i > 10 [L14] i = i+1 [L16] COND TRUE 30 <= i && i <= 40 [L17] i = i-1 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2024-11-17 08:04:17,130 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)