./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loop-invgen/fragtest_simple.i --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/loop-invgen/fragtest_simple.i -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 be3b53cc5f9badbf5402cafcfa5766831674eb009261bc7c1bcbe9580aece38e --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 20:21:25,699 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 20:21:25,748 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2025-03-17 20:21:25,753 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 20:21:25,753 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 20:21:25,753 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.Remove goto edges from RCFG [2025-03-17 20:21:25,771 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 20:21:25,771 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 20:21:25,771 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 20:21:25,771 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 20:21:25,771 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 20:21:25,772 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 20:21:25,772 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 20:21:25,772 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 20:21:25,772 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-03-17 20:21:25,772 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-03-17 20:21:25,772 INFO L153 SettingsManager]: * Use old map elimination=false [2025-03-17 20:21:25,772 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-03-17 20:21:25,772 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-03-17 20:21:25,772 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-03-17 20:21:25,772 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 20:21:25,776 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-03-17 20:21:25,776 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 20:21:25,776 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 20:21:25,776 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 20:21:25,776 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 20:21:25,776 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-03-17 20:21:25,776 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-03-17 20:21:25,776 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-03-17 20:21:25,776 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 20:21:25,776 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 20:21:25,776 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 20:21:25,776 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-03-17 20:21:25,776 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 20:21:25,776 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 20:21:25,776 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 20:21:25,776 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 20:21:25,776 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 20:21:25,776 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 20:21:25,777 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-03-17 20:21:25,777 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 -> be3b53cc5f9badbf5402cafcfa5766831674eb009261bc7c1bcbe9580aece38e [2025-03-17 20:21:25,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 20:21:25,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 20:21:26,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 20:21:26,001 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 20:21:26,001 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 20:21:26,002 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/fragtest_simple.i [2025-03-17 20:21:27,151 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb4fac970/c95ec51f0ba74a0fbe7fa6a882fe8e59/FLAGef5630e5b [2025-03-17 20:21:27,403 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 20:21:27,403 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/fragtest_simple.i [2025-03-17 20:21:27,408 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb4fac970/c95ec51f0ba74a0fbe7fa6a882fe8e59/FLAGef5630e5b [2025-03-17 20:21:27,730 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb4fac970/c95ec51f0ba74a0fbe7fa6a882fe8e59 [2025-03-17 20:21:27,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 20:21:27,735 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 20:21:27,736 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 20:21:27,736 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 20:21:27,740 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 20:21:27,741 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 08:21:27" (1/1) ... [2025-03-17 20:21:27,742 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38f065d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:21:27, skipping insertion in model container [2025-03-17 20:21:27,742 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 08:21:27" (1/1) ... [2025-03-17 20:21:27,752 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 20:21:27,860 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 20:21:27,867 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 20:21:27,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 20:21:27,892 INFO L204 MainTranslator]: Completed translation [2025-03-17 20:21:27,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:21:27 WrapperNode [2025-03-17 20:21:27,892 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 20:21:27,893 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 20:21:27,893 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 20:21:27,893 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 20:21:27,898 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:21:27" (1/1) ... [2025-03-17 20:21:27,902 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:21:27" (1/1) ... [2025-03-17 20:21:27,914 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2025-03-17 20:21:27,916 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 20:21:27,916 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 20:21:27,917 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 20:21:27,917 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 20:21:27,922 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:21:27" (1/1) ... [2025-03-17 20:21:27,922 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:21:27" (1/1) ... [2025-03-17 20:21:27,923 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:21:27" (1/1) ... [2025-03-17 20:21:27,930 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-17 20:21:27,932 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:21:27" (1/1) ... [2025-03-17 20:21:27,933 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:21:27" (1/1) ... [2025-03-17 20:21:27,934 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:21:27" (1/1) ... [2025-03-17 20:21:27,935 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:21:27" (1/1) ... [2025-03-17 20:21:27,936 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:21:27" (1/1) ... [2025-03-17 20:21:27,937 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:21:27" (1/1) ... [2025-03-17 20:21:27,938 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 20:21:27,939 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 20:21:27,939 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 20:21:27,939 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 20:21:27,940 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:21:27" (1/1) ... [2025-03-17 20:21:27,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 20:21:27,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 20:21:27,970 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 20:21:27,973 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 20:21:27,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 20:21:27,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 20:21:27,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 20:21:27,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 20:21:28,034 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 20:21:28,036 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 20:21:28,136 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2025-03-17 20:21:28,136 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 20:21:28,144 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 20:21:28,144 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 20:21:28,144 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 08:21:28 BoogieIcfgContainer [2025-03-17 20:21:28,145 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 20:21:28,145 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-03-17 20:21:28,146 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-03-17 20:21:28,149 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-03-17 20:21:28,150 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-17 20:21:28,150 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 17.03 08:21:27" (1/3) ... [2025-03-17 20:21:28,151 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5b9e9cc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.03 08:21:28, skipping insertion in model container [2025-03-17 20:21:28,151 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-17 20:21:28,151 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:21:27" (2/3) ... [2025-03-17 20:21:28,151 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5b9e9cc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.03 08:21:28, skipping insertion in model container [2025-03-17 20:21:28,152 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-17 20:21:28,152 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 08:21:28" (3/3) ... [2025-03-17 20:21:28,152 INFO L363 chiAutomizerObserver]: Analyzing ICFG fragtest_simple.i [2025-03-17 20:21:28,195 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-03-17 20:21:28,195 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-03-17 20:21:28,196 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-03-17 20:21:28,196 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-03-17 20:21:28,196 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-03-17 20:21:28,196 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-03-17 20:21:28,197 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-03-17 20:21:28,197 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-03-17 20:21:28,201 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17 states, 16 states have (on average 1.5625) internal successors, (25), 16 states have internal predecessors, (25), 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 20:21:28,211 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2025-03-17 20:21:28,212 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-17 20:21:28,212 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-17 20:21:28,215 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-03-17 20:21:28,215 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-03-17 20:21:28,215 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-03-17 20:21:28,215 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17 states, 16 states have (on average 1.5625) internal successors, (25), 16 states have internal predecessors, (25), 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 20:21:28,216 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2025-03-17 20:21:28,217 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-17 20:21:28,217 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-17 20:21:28,217 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-03-17 20:21:28,217 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-03-17 20:21:28,221 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~i~0#1, main_~pvlen~0#1, main_~tmp___1~0#1, main_~k~0#1, main_~n~0#1, main_~j~0#1;havoc main_~i~0#1;havoc main_~pvlen~0#1;havoc main_~tmp___1~0#1;main_~k~0#1 := 0;havoc main_~n~0#1;main_~i~0#1 := 0;havoc main_#t~nondet1#1;main_~pvlen~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" [2025-03-17 20:21:28,221 INFO L754 eck$LassoCheckResult]: Loop: "assume true;havoc main_#t~nondet2#1;" "assume 0 != main_#t~nondet2#1 && main_~i~0#1 <= 1000000;havoc main_#t~nondet2#1;main_~i~0#1 := 1 + main_~i~0#1;" [2025-03-17 20:21:28,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 20:21:28,225 INFO L85 PathProgramCache]: Analyzing trace with hash 58, now seen corresponding path program 1 times [2025-03-17 20:21:28,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 20:21:28,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256437995] [2025-03-17 20:21:28,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 20:21:28,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 20:21:28,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-03-17 20:21:28,285 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-03-17 20:21:28,286 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 20:21:28,286 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 20:21:28,286 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 20:21:28,290 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-03-17 20:21:28,292 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-03-17 20:21:28,292 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 20:21:28,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 20:21:28,305 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 20:21:28,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 20:21:28,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1760, now seen corresponding path program 1 times [2025-03-17 20:21:28,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 20:21:28,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295061416] [2025-03-17 20:21:28,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 20:21:28,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 20:21:28,312 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 20:21:28,316 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 20:21:28,317 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 20:21:28,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 20:21:28,317 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 20:21:28,318 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 20:21:28,319 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 20:21:28,321 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 20:21:28,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 20:21:28,322 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 20:21:28,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 20:21:28,324 INFO L85 PathProgramCache]: Analyzing trace with hash 56537, now seen corresponding path program 1 times [2025-03-17 20:21:28,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 20:21:28,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036219822] [2025-03-17 20:21:28,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 20:21:28,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 20:21:28,330 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 20:21:28,334 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 20:21:28,334 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 20:21:28,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 20:21:28,334 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 20:21:28,337 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 20:21:28,342 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 20:21:28,343 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 20:21:28,343 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 20:21:28,344 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 20:21:28,397 INFO L204 LassoAnalysis]: Preferences: [2025-03-17 20:21:28,398 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-17 20:21:28,398 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-17 20:21:28,398 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-17 20:21:28,398 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-03-17 20:21:28,398 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 20:21:28,398 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-17 20:21:28,398 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-17 20:21:28,399 INFO L132 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration1_Loop [2025-03-17 20:21:28,399 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-17 20:21:28,399 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-17 20:21:28,410 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 20:21:28,420 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 20:21:28,450 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-17 20:21:28,452 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-03-17 20:21:28,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 20:21:28,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 20:21:28,456 INFO L229 MonitoredProcess]: Starting monitored process 2 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 20:21:28,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2025-03-17 20:21:28,459 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-17 20:21:28,459 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-17 20:21:28,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2025-03-17 20:21:28,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 20:21:28,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 20:21:28,483 INFO L229 MonitoredProcess]: Starting monitored process 3 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 20:21:28,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-03-17 20:21:28,486 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-03-17 20:21:28,487 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-17 20:21:28,515 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-03-17 20:21:28,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2025-03-17 20:21:28,521 INFO L204 LassoAnalysis]: Preferences: [2025-03-17 20:21:28,521 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-17 20:21:28,521 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-17 20:21:28,521 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-17 20:21:28,521 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-03-17 20:21:28,521 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 20:21:28,521 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-17 20:21:28,521 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-17 20:21:28,521 INFO L132 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration1_Loop [2025-03-17 20:21:28,521 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-17 20:21:28,521 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-17 20:21:28,522 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 20:21:28,529 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 20:21:28,548 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-17 20:21:28,551 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-03-17 20:21:28,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 20:21:28,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 20:21:28,557 INFO L229 MonitoredProcess]: Starting monitored process 4 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 20:21:28,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-03-17 20:21:28,560 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-03-17 20:21:28,571 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-17 20:21:28,571 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-03-17 20:21:28,571 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-17 20:21:28,571 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-17 20:21:28,571 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-17 20:21:28,575 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-03-17 20:21:28,575 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-03-17 20:21:28,579 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-03-17 20:21:28,584 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-03-17 20:21:28,586 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-03-17 20:21:28,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 20:21:28,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 20:21:28,590 INFO L229 MonitoredProcess]: Starting monitored process 5 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 20:21:28,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-03-17 20:21:28,592 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-03-17 20:21:28,593 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-03-17 20:21:28,595 INFO L474 LassoAnalysis]: Proved termination. [2025-03-17 20:21:28,595 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 2000001 Supporting invariants [] [2025-03-17 20:21:28,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-03-17 20:21:28,604 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-03-17 20:21:28,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 20:21:28,630 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-03-17 20:21:28,638 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-03-17 20:21:28,639 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 20:21:28,639 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 20:21:28,642 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-17 20:21:28,643 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 20:21:28,650 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 20:21:28,652 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 20:21:28,652 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 20:21:28,652 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 20:21:28,655 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 20:21:28,655 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 20:21:28,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 20:21:28,683 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2025-03-17 20:21:28,685 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 17 states, 16 states have (on average 1.5625) internal successors, (25), 16 states have internal predecessors, (25), 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 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 20:21:28,717 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 17 states, 16 states have (on average 1.5625) internal successors, (25), 16 states have internal predecessors, (25), 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 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) Result 34 states and 50 transitions. Complement of second has 6 states. [2025-03-17 20:21:28,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2025-03-17 20:21:28,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 20:21:28,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2025-03-17 20:21:28,725 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 1 letters. Loop has 2 letters. [2025-03-17 20:21:28,725 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-17 20:21:28,725 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 3 letters. Loop has 2 letters. [2025-03-17 20:21:28,726 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-17 20:21:28,726 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 1 letters. Loop has 4 letters. [2025-03-17 20:21:28,726 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-17 20:21:28,727 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 50 transitions. [2025-03-17 20:21:28,728 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2025-03-17 20:21:28,729 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 16 states and 23 transitions. [2025-03-17 20:21:28,730 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2025-03-17 20:21:28,730 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2025-03-17 20:21:28,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 23 transitions. [2025-03-17 20:21:28,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-03-17 20:21:28,730 INFO L218 hiAutomatonCegarLoop]: Abstraction has 16 states and 23 transitions. [2025-03-17 20:21:28,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 23 transitions. [2025-03-17 20:21:28,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2025-03-17 20:21:28,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.4375) internal successors, (23), 15 states have internal predecessors, (23), 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 20:21:28,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 23 transitions. [2025-03-17 20:21:28,747 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 23 transitions. [2025-03-17 20:21:28,747 INFO L432 stractBuchiCegarLoop]: Abstraction has 16 states and 23 transitions. [2025-03-17 20:21:28,747 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-03-17 20:21:28,747 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 23 transitions. [2025-03-17 20:21:28,748 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2025-03-17 20:21:28,748 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-17 20:21:28,748 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-17 20:21:28,749 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-03-17 20:21:28,750 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-03-17 20:21:28,750 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~i~0#1, main_~pvlen~0#1, main_~tmp___1~0#1, main_~k~0#1, main_~n~0#1, main_~j~0#1;havoc main_~i~0#1;havoc main_~pvlen~0#1;havoc main_~tmp___1~0#1;main_~k~0#1 := 0;havoc main_~n~0#1;main_~i~0#1 := 0;havoc main_#t~nondet1#1;main_~pvlen~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" "assume true;havoc main_#t~nondet2#1;" "assume !(0 != main_#t~nondet2#1 && main_~i~0#1 <= 1000000);havoc main_#t~nondet2#1;" "assume !(main_~i~0#1 > main_~pvlen~0#1);" "main_~i~0#1 := 0;" [2025-03-17 20:21:28,750 INFO L754 eck$LassoCheckResult]: Loop: "assume true;havoc main_#t~nondet3#1;" "assume 0 != main_#t~nondet3#1 && main_~i~0#1 <= 1000000;havoc main_#t~nondet3#1;main_~tmp___1~0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_~i~0#1;main_~k~0#1 := 1 + main_~k~0#1;" [2025-03-17 20:21:28,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 20:21:28,750 INFO L85 PathProgramCache]: Analyzing trace with hash 54331734, now seen corresponding path program 1 times [2025-03-17 20:21:28,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 20:21:28,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036010486] [2025-03-17 20:21:28,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 20:21:28,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 20:21:28,755 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 20:21:28,759 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 20:21:28,761 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 20:21:28,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 20:21:28,761 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 20:21:28,762 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 20:21:28,765 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 20:21:28,768 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 20:21:28,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 20:21:28,770 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 20:21:28,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 20:21:28,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1472, now seen corresponding path program 1 times [2025-03-17 20:21:28,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 20:21:28,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287067674] [2025-03-17 20:21:28,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 20:21:28,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 20:21:28,774 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 20:21:28,775 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 20:21:28,776 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 20:21:28,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 20:21:28,776 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 20:21:28,776 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 20:21:28,777 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 20:21:28,778 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 20:21:28,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 20:21:28,779 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 20:21:28,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 20:21:28,779 INFO L85 PathProgramCache]: Analyzing trace with hash 673189333, now seen corresponding path program 1 times [2025-03-17 20:21:28,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 20:21:28,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493670418] [2025-03-17 20:21:28,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 20:21:28,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 20:21:28,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 20:21:28,788 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 20:21:28,788 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 20:21:28,788 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 20:21:28,788 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 20:21:28,790 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 20:21:28,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 20:21:28,793 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 20:21:28,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 20:21:28,796 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 20:21:28,827 INFO L204 LassoAnalysis]: Preferences: [2025-03-17 20:21:28,827 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-17 20:21:28,827 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-17 20:21:28,827 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-17 20:21:28,827 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-03-17 20:21:28,827 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 20:21:28,827 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-17 20:21:28,827 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-17 20:21:28,827 INFO L132 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration2_Loop [2025-03-17 20:21:28,827 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-17 20:21:28,827 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-17 20:21:28,828 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 20:21:28,831 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 20:21:28,836 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 20:21:28,873 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-17 20:21:28,873 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-03-17 20:21:28,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 20:21:28,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 20:21:28,876 INFO L229 MonitoredProcess]: Starting monitored process 6 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 20:21:28,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-03-17 20:21:28,879 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-17 20:21:28,879 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-17 20:21:28,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2025-03-17 20:21:28,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 20:21:28,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 20:21:28,899 INFO L229 MonitoredProcess]: Starting monitored process 7 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 20:21:28,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-03-17 20:21:28,902 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-03-17 20:21:28,902 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-17 20:21:28,928 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-17 20:21:28,928 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~k~0#1=0} Honda state: {ULTIMATE.start_main_~k~0#1=0} Generalized eigenvectors: [{ULTIMATE.start_main_~k~0#1=-1}, {ULTIMATE.start_main_~k~0#1=5}, {ULTIMATE.start_main_~k~0#1=-3}] Lambdas: [6, 1, 1] Nus: [1, 0] [2025-03-17 20:21:28,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-03-17 20:21:28,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 20:21:28,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 20:21:28,936 INFO L229 MonitoredProcess]: Starting monitored process 8 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 20:21:28,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-03-17 20:21:28,937 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-17 20:21:28,937 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-17 20:21:28,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-03-17 20:21:28,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 20:21:28,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 20:21:28,954 INFO L229 MonitoredProcess]: Starting monitored process 9 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 20:21:28,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-03-17 20:21:28,962 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-03-17 20:21:28,968 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-17 20:21:28,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2025-03-17 20:21:28,993 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-03-17 20:21:28,997 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2025-03-17 20:21:28,997 INFO L204 LassoAnalysis]: Preferences: [2025-03-17 20:21:28,997 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-17 20:21:28,997 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-17 20:21:28,997 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-17 20:21:28,997 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-03-17 20:21:28,997 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 20:21:28,997 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-17 20:21:28,997 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-17 20:21:28,997 INFO L132 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration2_Loop [2025-03-17 20:21:28,997 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-17 20:21:28,997 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-17 20:21:28,998 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 20:21:29,002 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 20:21:29,015 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 20:21:29,043 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-17 20:21:29,043 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-03-17 20:21:29,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 20:21:29,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 20:21:29,045 INFO L229 MonitoredProcess]: Starting monitored process 10 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 20:21:29,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-03-17 20:21:29,048 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-03-17 20:21:29,058 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-17 20:21:29,058 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-03-17 20:21:29,058 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-17 20:21:29,058 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-17 20:21:29,058 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-17 20:21:29,059 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-03-17 20:21:29,059 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-03-17 20:21:29,063 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-17 20:21:29,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2025-03-17 20:21:29,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 20:21:29,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 20:21:29,071 INFO L229 MonitoredProcess]: Starting monitored process 11 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 20:21:29,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-03-17 20:21:29,073 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-03-17 20:21:29,084 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-17 20:21:29,084 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-03-17 20:21:29,084 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-17 20:21:29,084 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-17 20:21:29,084 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-17 20:21:29,085 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-03-17 20:21:29,085 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-03-17 20:21:29,087 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-03-17 20:21:29,088 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-03-17 20:21:29,089 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-03-17 20:21:29,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 20:21:29,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 20:21:29,091 INFO L229 MonitoredProcess]: Starting monitored process 12 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 20:21:29,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-03-17 20:21:29,092 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-03-17 20:21:29,092 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-03-17 20:21:29,092 INFO L474 LassoAnalysis]: Proved termination. [2025-03-17 20:21:29,092 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 2000001 Supporting invariants [] [2025-03-17 20:21:29,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2025-03-17 20:21:29,099 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-03-17 20:21:29,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 20:21:29,119 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 20:21:29,123 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 20:21:29,123 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 20:21:29,123 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 20:21:29,124 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-17 20:21:29,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 20:21:29,134 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 20:21:29,135 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 20:21:29,135 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 20:21:29,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 20:21:29,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 20:21:29,136 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 20:21:29,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 20:21:29,138 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2025-03-17 20:21:29,138 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 23 transitions. cyclomatic complexity: 10 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 20:21:29,151 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 23 transitions. cyclomatic complexity: 10. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) Result 34 states and 47 transitions. Complement of second has 6 states. [2025-03-17 20:21:29,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2025-03-17 20:21:29,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 20:21:29,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 26 transitions. [2025-03-17 20:21:29,153 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 5 letters. Loop has 2 letters. [2025-03-17 20:21:29,153 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-17 20:21:29,153 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 7 letters. Loop has 2 letters. [2025-03-17 20:21:29,153 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-17 20:21:29,153 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 5 letters. Loop has 4 letters. [2025-03-17 20:21:29,153 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-17 20:21:29,154 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 47 transitions. [2025-03-17 20:21:29,154 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2025-03-17 20:21:29,155 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 21 states and 28 transitions. [2025-03-17 20:21:29,155 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2025-03-17 20:21:29,155 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2025-03-17 20:21:29,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 28 transitions. [2025-03-17 20:21:29,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-03-17 20:21:29,155 INFO L218 hiAutomatonCegarLoop]: Abstraction has 21 states and 28 transitions. [2025-03-17 20:21:29,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 28 transitions. [2025-03-17 20:21:29,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2025-03-17 20:21:29,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 20 states have (on average 1.35) internal successors, (27), 19 states have internal predecessors, (27), 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 20:21:29,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 27 transitions. [2025-03-17 20:21:29,156 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 27 transitions. [2025-03-17 20:21:29,156 INFO L432 stractBuchiCegarLoop]: Abstraction has 20 states and 27 transitions. [2025-03-17 20:21:29,156 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-03-17 20:21:29,156 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 27 transitions. [2025-03-17 20:21:29,158 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2025-03-17 20:21:29,158 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-17 20:21:29,158 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-17 20:21:29,158 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 20:21:29,158 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-03-17 20:21:29,158 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~i~0#1, main_~pvlen~0#1, main_~tmp___1~0#1, main_~k~0#1, main_~n~0#1, main_~j~0#1;havoc main_~i~0#1;havoc main_~pvlen~0#1;havoc main_~tmp___1~0#1;main_~k~0#1 := 0;havoc main_~n~0#1;main_~i~0#1 := 0;havoc main_#t~nondet1#1;main_~pvlen~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" "assume true;havoc main_#t~nondet2#1;" "assume !(0 != main_#t~nondet2#1 && main_~i~0#1 <= 1000000);havoc main_#t~nondet2#1;" "assume !(main_~i~0#1 > main_~pvlen~0#1);" "main_~i~0#1 := 0;" "assume true;havoc main_#t~nondet3#1;" "assume !(0 != main_#t~nondet3#1 && main_~i~0#1 <= 1000000);havoc main_#t~nondet3#1;" "main_~j~0#1 := 0;main_~n~0#1 := main_~i~0#1;" "assume true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 >= 0 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1;" "assume !(0 == __VERIFIER_assert_~cond#1);" [2025-03-17 20:21:29,158 INFO L754 eck$LassoCheckResult]: Loop: "havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;main_~k~0#1 := main_~k~0#1 - 1;main_~i~0#1 := main_~i~0#1 - 1;main_~j~0#1 := 1 + main_~j~0#1;" "assume !(main_~j~0#1 >= main_~n~0#1);" "assume true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 >= 0 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1;" "assume !(0 == __VERIFIER_assert_~cond#1);" [2025-03-17 20:21:29,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 20:21:29,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1781095446, now seen corresponding path program 1 times [2025-03-17 20:21:29,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 20:21:29,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255008268] [2025-03-17 20:21:29,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 20:21:29,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 20:21:29,162 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 20:21:29,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 20:21:29,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 20:21:29,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 20:21:29,167 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 20:21:29,168 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 20:21:29,171 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 20:21:29,171 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 20:21:29,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 20:21:29,173 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 20:21:29,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 20:21:29,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1015103, now seen corresponding path program 1 times [2025-03-17 20:21:29,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 20:21:29,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274156583] [2025-03-17 20:21:29,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 20:21:29,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 20:21:29,175 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 20:21:29,178 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 20:21:29,178 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 20:21:29,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 20:21:29,178 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 20:21:29,181 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 20:21:29,183 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 20:21:29,183 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 20:21:29,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 20:21:29,184 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 20:21:29,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 20:21:29,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1062389460, now seen corresponding path program 1 times [2025-03-17 20:21:29,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 20:21:29,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417232480] [2025-03-17 20:21:29,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 20:21:29,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 20:21:29,188 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 20:21:29,193 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 20:21:29,193 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 20:21:29,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 20:21:29,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 20:21:29,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 20:21:29,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417232480] [2025-03-17 20:21:29,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417232480] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 20:21:29,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 20:21:29,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 20:21:29,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053617834] [2025-03-17 20:21:29,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 20:21:29,350 INFO L204 LassoAnalysis]: Preferences: [2025-03-17 20:21:29,350 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-17 20:21:29,350 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-17 20:21:29,350 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-17 20:21:29,350 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-03-17 20:21:29,350 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 20:21:29,350 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-17 20:21:29,350 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-17 20:21:29,350 INFO L132 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration3_Loop [2025-03-17 20:21:29,350 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-17 20:21:29,350 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-17 20:21:29,351 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 20:21:29,357 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 20:21:29,361 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 20:21:29,365 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 20:21:29,367 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 20:21:29,411 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-17 20:21:29,411 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-03-17 20:21:29,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 20:21:29,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 20:21:29,414 INFO L229 MonitoredProcess]: Starting monitored process 13 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 20:21:29,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-03-17 20:21:29,434 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-17 20:21:29,434 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-17 20:21:29,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2025-03-17 20:21:29,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 20:21:29,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 20:21:29,476 INFO L229 MonitoredProcess]: Starting monitored process 14 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 20:21:29,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-03-17 20:21:29,478 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-03-17 20:21:29,478 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-17 20:21:29,560 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-03-17 20:21:29,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2025-03-17 20:21:29,564 INFO L204 LassoAnalysis]: Preferences: [2025-03-17 20:21:29,564 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-17 20:21:29,565 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-17 20:21:29,565 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-17 20:21:29,565 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-03-17 20:21:29,565 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 20:21:29,565 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-17 20:21:29,565 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-17 20:21:29,565 INFO L132 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration3_Loop [2025-03-17 20:21:29,565 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-17 20:21:29,565 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-17 20:21:29,566 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 20:21:29,572 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 20:21:29,574 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 20:21:29,578 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 20:21:29,580 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 20:21:29,615 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-17 20:21:29,615 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-03-17 20:21:29,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 20:21:29,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 20:21:29,617 INFO L229 MonitoredProcess]: Starting monitored process 15 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 20:21:29,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2025-03-17 20:21:29,620 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-03-17 20:21:29,629 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-17 20:21:29,629 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-03-17 20:21:29,629 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-17 20:21:29,630 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-17 20:21:29,630 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-17 20:21:29,631 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-03-17 20:21:29,631 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-03-17 20:21:29,633 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-03-17 20:21:29,636 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-03-17 20:21:29,636 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-03-17 20:21:29,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 20:21:29,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 20:21:29,638 INFO L229 MonitoredProcess]: Starting monitored process 16 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 20:21:29,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2025-03-17 20:21:29,640 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-03-17 20:21:29,640 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-03-17 20:21:29,640 INFO L474 LassoAnalysis]: Proved termination. [2025-03-17 20:21:29,640 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1, ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~j~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2025-03-17 20:21:29,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2025-03-17 20:21:29,649 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-03-17 20:21:29,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 20:21:29,662 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 20:21:29,665 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 20:21:29,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 20:21:29,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 20:21:29,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-17 20:21:29,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 20:21:29,681 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 20:21:29,683 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 20:21:29,683 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 20:21:29,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 20:21:29,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 20:21:29,684 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 20:21:29,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 20:21:29,718 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-03-17 20:21:29,719 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 27 transitions. cyclomatic complexity: 10 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 20:21:29,734 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 27 transitions. cyclomatic complexity: 10. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) Result 31 states and 40 transitions. Complement of second has 7 states. [2025-03-17 20:21:29,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-03-17 20:21:29,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 20:21:29,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 29 transitions. [2025-03-17 20:21:29,737 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 10 letters. Loop has 4 letters. [2025-03-17 20:21:29,738 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-17 20:21:29,738 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 14 letters. Loop has 4 letters. [2025-03-17 20:21:29,738 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-17 20:21:29,738 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 10 letters. Loop has 8 letters. [2025-03-17 20:21:29,739 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-17 20:21:29,739 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 40 transitions. [2025-03-17 20:21:29,739 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-03-17 20:21:29,739 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2025-03-17 20:21:29,739 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-03-17 20:21:29,739 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-03-17 20:21:29,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-03-17 20:21:29,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-03-17 20:21:29,739 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-17 20:21:29,739 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-17 20:21:29,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 20:21:29,741 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 20:21:29,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 20:21:29,741 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 20:21:29,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 20:21:29,743 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2025-03-17 20:21:29,743 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2025-03-17 20:21:29,743 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-03-17 20:21:29,743 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2025-03-17 20:21:29,743 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-03-17 20:21:29,743 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-03-17 20:21:29,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-03-17 20:21:29,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-03-17 20:21:29,743 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-17 20:21:29,743 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-17 20:21:29,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 20:21:29,743 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-17 20:21:29,743 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-03-17 20:21:29,743 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-03-17 20:21:29,743 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-03-17 20:21:29,743 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-03-17 20:21:29,748 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.03 08:21:29 BoogieIcfgContainer [2025-03-17 20:21:29,748 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-03-17 20:21:29,749 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 20:21:29,749 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 20:21:29,749 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 20:21:29,749 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 08:21:28" (3/4) ... [2025-03-17 20:21:29,754 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-17 20:21:29,754 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 20:21:29,755 INFO L158 Benchmark]: Toolchain (without parser) took 2019.49ms. Allocated memory is still 142.6MB. Free memory was 105.6MB in the beginning and 57.4MB in the end (delta: 48.2MB). Peak memory consumption was 47.6MB. Max. memory is 16.1GB. [2025-03-17 20:21:29,755 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 201.3MB. Free memory is still 130.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 20:21:29,755 INFO L158 Benchmark]: CACSL2BoogieTranslator took 156.80ms. Allocated memory is still 142.6MB. Free memory was 105.6MB in the beginning and 94.4MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 20:21:29,755 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.61ms. Allocated memory is still 142.6MB. Free memory was 94.4MB in the beginning and 93.5MB in the end (delta: 883.4kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 20:21:29,755 INFO L158 Benchmark]: Boogie Preprocessor took 22.17ms. Allocated memory is still 142.6MB. Free memory was 93.5MB in the beginning and 92.3MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 20:21:29,755 INFO L158 Benchmark]: IcfgBuilder took 205.70ms. Allocated memory is still 142.6MB. Free memory was 92.3MB in the beginning and 81.6MB in the end (delta: 10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 20:21:29,755 INFO L158 Benchmark]: BuchiAutomizer took 1603.04ms. Allocated memory is still 142.6MB. Free memory was 81.6MB in the beginning and 57.4MB in the end (delta: 24.2MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. [2025-03-17 20:21:29,755 INFO L158 Benchmark]: Witness Printer took 5.23ms. Allocated memory is still 142.6MB. Free memory was 57.4MB in the beginning and 57.4MB in the end (delta: 27.1kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 20:21:29,756 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 201.3MB. Free memory is still 130.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 156.80ms. Allocated memory is still 142.6MB. Free memory was 105.6MB in the beginning and 94.4MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.61ms. Allocated memory is still 142.6MB. Free memory was 94.4MB in the beginning and 93.5MB in the end (delta: 883.4kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.17ms. Allocated memory is still 142.6MB. Free memory was 93.5MB in the beginning and 92.3MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 205.70ms. Allocated memory is still 142.6MB. Free memory was 92.3MB in the beginning and 81.6MB in the end (delta: 10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1603.04ms. Allocated memory is still 142.6MB. Free memory was 81.6MB in the beginning and 57.4MB in the end (delta: 24.2MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. * Witness Printer took 5.23ms. Allocated memory is still 142.6MB. Free memory was 57.4MB in the beginning and 57.4MB in the end (delta: 27.1kB). 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 Your program was decomposed into 4 terminating modules (1 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function (((long long) -2 * i) + 2000001) and consists of 4 locations. One deterministic module has affine ranking function (((long long) -2 * i) + 2000001) and consists of 4 locations. One deterministic module has affine ranking function (((long long) -1 * j) + n) and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.5s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 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 [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 29 mSDsluCounter, 40 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20 IncrementalHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 29 mSDtfsCounter, 20 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf100 lsp71 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq156 hnf93 smp100 dnf100 smp100 tf112 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 43ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-03-17 20:21:29,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2025-03-17 20:21:29,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2025-03-17 20:21:30,169 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 Result: TRUE