./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-bwb/and-01.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-bwb/and-01.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e0082974c4a0ccb2e3b0423062099713be2e4fbaae442bc0ff779d0ca2c39bca --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:49:43,058 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:49:43,110 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2025-03-17 19:49:43,115 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:49:43,115 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:49:43,115 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.Remove goto edges from RCFG [2025-03-17 19:49:43,143 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:49:43,143 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:49:43,143 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:49:43,144 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:49:43,144 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:49:43,144 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:49:43,144 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:49:43,144 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:49:43,145 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-03-17 19:49:43,145 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-03-17 19:49:43,145 INFO L153 SettingsManager]: * Use old map elimination=false [2025-03-17 19:49:43,145 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-03-17 19:49:43,145 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-03-17 19:49:43,145 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-03-17 19:49:43,145 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:49:43,145 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-03-17 19:49:43,145 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:49:43,146 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:49:43,146 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-03-17 19:49:43,146 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-03-17 19:49:43,146 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-03-17 19:49:43,146 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:49:43,146 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:49:43,146 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-03-17 19:49:43,146 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:49:43,146 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:49:43,146 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:49:43,146 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:49:43,147 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:49:43,147 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:49:43,147 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-03-17 19:49:43,147 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0082974c4a0ccb2e3b0423062099713be2e4fbaae442bc0ff779d0ca2c39bca [2025-03-17 19:49:43,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:49:43,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:49:43,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:49:43,388 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:49:43,388 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:49:43,389 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-bwb/and-01.i [2025-03-17 19:49:45,298 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86c77c480/25ce91fce3064b77a9787de918693abe/FLAGaf1de1b37 [2025-03-17 19:49:45,573 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:49:45,573 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-bwb/and-01.i [2025-03-17 19:49:45,587 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86c77c480/25ce91fce3064b77a9787de918693abe/FLAGaf1de1b37 [2025-03-17 19:49:45,607 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86c77c480/25ce91fce3064b77a9787de918693abe [2025-03-17 19:49:45,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:49:45,609 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:49:45,610 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:49:45,610 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:49:45,614 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:49:45,615 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:49:45" (1/1) ... [2025-03-17 19:49:45,616 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f100305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:49:45, skipping insertion in model container [2025-03-17 19:49:45,617 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:49:45" (1/1) ... [2025-03-17 19:49:45,641 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:49:45,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:49:45,850 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:49:45,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:49:45,898 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:49:45,899 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:49:45 WrapperNode [2025-03-17 19:49:45,899 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:49:45,901 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:49:45,901 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:49:45,901 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:49:45,905 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:49:45" (1/1) ... [2025-03-17 19:49:45,914 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:49:45" (1/1) ... [2025-03-17 19:49:45,928 INFO L138 Inliner]: procedures = 110, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2025-03-17 19:49:45,929 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:49:45,930 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:49:45,930 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:49:45,930 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:49:45,935 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:49:45" (1/1) ... [2025-03-17 19:49:45,935 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:49:45" (1/1) ... [2025-03-17 19:49:45,937 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:49:45" (1/1) ... [2025-03-17 19:49:45,943 INFO L175 MemorySlicer]: No memory access in input program. [2025-03-17 19:49:45,944 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:49:45" (1/1) ... [2025-03-17 19:49:45,945 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:49:45" (1/1) ... [2025-03-17 19:49:45,947 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:49:45" (1/1) ... [2025-03-17 19:49:45,950 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:49:45" (1/1) ... [2025-03-17 19:49:45,950 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:49:45" (1/1) ... [2025-03-17 19:49:45,951 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:49:45" (1/1) ... [2025-03-17 19:49:45,951 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:49:45,952 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:49:45,952 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:49:45,952 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:49:45,954 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:49:45" (1/1) ... [2025-03-17 19:49:45,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:45,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:49:45,981 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-17 19:49:45,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2025-03-17 19:49:46,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:49:46,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:49:46,058 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:49:46,059 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:49:46,113 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2025-03-17 19:49:46,114 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:49:46,125 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:49:46,125 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:49:46,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:49:46 BoogieIcfgContainer [2025-03-17 19:49:46,126 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:49:46,126 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-03-17 19:49:46,126 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-03-17 19:49:46,130 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-03-17 19:49:46,131 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-17 19:49:46,131 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 17.03 07:49:45" (1/3) ... [2025-03-17 19:49:46,132 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@cd02908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.03 07:49:46, skipping insertion in model container [2025-03-17 19:49:46,132 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-17 19:49:46,132 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:49:45" (2/3) ... [2025-03-17 19:49:46,132 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@cd02908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.03 07:49:46, skipping insertion in model container [2025-03-17 19:49:46,132 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-17 19:49:46,132 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:49:46" (3/3) ... [2025-03-17 19:49:46,133 INFO L363 chiAutomizerObserver]: Analyzing ICFG and-01.i [2025-03-17 19:49:46,167 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-03-17 19:49:46,168 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-03-17 19:49:46,168 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-03-17 19:49:46,168 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-03-17 19:49:46,168 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-03-17 19:49:46,168 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-03-17 19:49:46,168 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-03-17 19:49:46,168 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-03-17 19:49:46,172 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:46,184 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-03-17 19:49:46,184 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-17 19:49:46,184 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-17 19:49:46,187 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-03-17 19:49:46,187 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-03-17 19:49:46,188 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-03-17 19:49:46,188 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:46,188 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-03-17 19:49:46,188 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-17 19:49:46,188 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-17 19:49:46,188 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-03-17 19:49:46,188 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-03-17 19:49:46,193 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~post5#1, main_#t~bitwise6#1, main_~a~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~x~0#1;havoc main_#t~nondet3#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;havoc main_#t~nondet4#1;main_~a~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;" "assume !!(main_~a~0#1 > 0);" [2025-03-17 19:49:46,194 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~x~0#1 > 0;main_#t~post5#1 := main_~a~0#1;main_~a~0#1 := main_#t~post5#1 - 1;havoc main_#t~post5#1;" "assume 0 == main_~x~0#1 || 0 == main_~a~0#1;main_#t~bitwise6#1 := 0;" "main_~x~0#1 := main_#t~bitwise6#1;havoc main_#t~bitwise6#1;" [2025-03-17 19:49:46,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:49:46,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1312, now seen corresponding path program 1 times [2025-03-17 19:49:46,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:49:46,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897894042] [2025-03-17 19:49:46,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:49:46,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:49:46,255 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 19:49:46,257 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 19:49:46,257 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:46,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:49:46,258 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:49:46,259 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 19:49:46,259 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 19:49:46,260 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:46,260 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:49:46,267 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:49:46,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:49:46,269 INFO L85 PathProgramCache]: Analyzing trace with hash 37542, now seen corresponding path program 1 times [2025-03-17 19:49:46,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:49:46,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965683976] [2025-03-17 19:49:46,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:49:46,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:49:46,272 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 19:49:46,278 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 19:49:46,278 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:46,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:49:46,278 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:49:46,279 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 19:49:46,281 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 19:49:46,281 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:46,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:49:46,282 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:49:46,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:49:46,283 INFO L85 PathProgramCache]: Analyzing trace with hash 39093543, now seen corresponding path program 1 times [2025-03-17 19:49:46,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:49:46,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079387243] [2025-03-17 19:49:46,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:49:46,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:49:46,287 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 19:49:46,289 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 19:49:46,289 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:46,289 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:49:46,289 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:49:46,291 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 19:49:46,292 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 19:49:46,292 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:46,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:49:46,293 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:49:46,397 INFO L204 LassoAnalysis]: Preferences: [2025-03-17 19:49:46,397 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-17 19:49:46,398 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-17 19:49:46,398 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-17 19:49:46,398 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-03-17 19:49:46,398 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:46,398 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-17 19:49:46,398 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-17 19:49:46,398 INFO L132 ssoRankerPreferences]: Filename of dumped script: and-01.i_Iteration1_Loop [2025-03-17 19:49:46,398 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-17 19:49:46,399 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-17 19:49:46,408 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:46,416 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:46,419 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:46,423 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:46,434 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:46,438 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:46,444 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:46,517 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-17 19:49:46,518 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-03-17 19:49:46,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:46,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:49:46,521 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 19:49:46,525 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 19:49:46,527 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-17 19:49:46,527 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-17 19:49:46,549 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-17 19:49:46,549 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~P_PID_1=1} Honda state: {v_rep~unnamed0~0~P_PID_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-03-17 19:49:46,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2025-03-17 19:49:46,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:46,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:49:46,558 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 19:49:46,559 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 19:49:46,560 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-17 19:49:46,560 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-17 19:49:46,578 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-17 19:49:46,578 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~P_PGID_1=2} Honda state: {v_rep~unnamed0~0~P_PGID_1=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-03-17 19:49:46,584 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 19:49:46,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:46,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:49:46,586 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 19:49:46,587 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 19:49:46,588 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-17 19:49:46,588 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-17 19:49:46,609 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-17 19:49:46,609 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~P_ALL_1=0} Honda state: {v_rep~unnamed0~0~P_ALL_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-03-17 19:49:46,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2025-03-17 19:49:46,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:46,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:49:46,618 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 19:49:46,620 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 19:49:46,620 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-17 19:49:46,621 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-17 19:49:46,640 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 19:49:46,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:46,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:49:46,645 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 19:49:46,646 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 19:49:46,647 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-03-17 19:49:46,647 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-17 19:49:46,673 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-03-17 19:49:46,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-03-17 19:49:46,679 INFO L204 LassoAnalysis]: Preferences: [2025-03-17 19:49:46,679 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-17 19:49:46,679 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-17 19:49:46,679 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-17 19:49:46,679 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-03-17 19:49:46,679 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:46,679 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-17 19:49:46,679 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-17 19:49:46,679 INFO L132 ssoRankerPreferences]: Filename of dumped script: and-01.i_Iteration1_Loop [2025-03-17 19:49:46,679 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-17 19:49:46,679 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-17 19:49:46,681 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:46,687 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:46,690 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:46,696 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:46,699 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:46,703 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:46,713 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:46,780 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-17 19:49:46,783 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-03-17 19:49:46,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:46,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:49:46,786 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 19:49:46,787 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 19:49:46,789 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 19:49:46,800 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-17 19:49:46,801 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-17 19:49:46,801 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-17 19:49:46,801 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-17 19:49:46,812 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-03-17 19:49:46,812 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-03-17 19:49:46,821 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-17 19:49:46,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2025-03-17 19:49:46,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:46,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:49:46,832 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 19:49:46,838 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 19:49:46,839 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 19:49:46,851 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-17 19:49:46,852 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-17 19:49:46,852 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-17 19:49:46,852 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-17 19:49:46,854 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-03-17 19:49:46,854 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-03-17 19:49:46,858 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-17 19:49:46,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2025-03-17 19:49:46,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:46,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:49:46,870 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 19:49:46,871 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 19:49:46,872 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 19:49:46,883 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-17 19:49:46,884 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-03-17 19:49:46,884 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-17 19:49:46,884 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-17 19:49:46,884 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-17 19:49:46,885 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-03-17 19:49:46,885 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-03-17 19:49:46,887 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-03-17 19:49:46,891 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-03-17 19:49:46,894 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-03-17 19:49:46,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:46,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:49:46,898 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 19:49:46,899 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 19:49:46,901 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-03-17 19:49:46,901 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-03-17 19:49:46,901 INFO L474 LassoAnalysis]: Proved termination. [2025-03-17 19:49:46,902 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2025-03-17 19:49:46,907 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 19:49:46,910 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-03-17 19:49:46,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:49:46,934 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 19:49:46,935 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 19:49:46,935 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:46,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:49:46,936 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-17 19:49:46,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:49:46,944 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 19:49:46,946 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 19:49:46,946 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:46,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:49:46,946 WARN L254 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:49:46,947 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:49:46,988 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 19:49:47,020 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 19:49:47,031 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 19:49:47,032 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:47,107 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 36 states and 50 transitions. Complement of second has 10 states. [2025-03-17 19:49:47,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2025-03-17 19:49:47,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:47,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 28 transitions. [2025-03-17 19:49:47,117 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 28 transitions. Stem has 2 letters. Loop has 3 letters. [2025-03-17 19:49:47,118 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-17 19:49:47,118 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 28 transitions. Stem has 5 letters. Loop has 3 letters. [2025-03-17 19:49:47,118 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-17 19:49:47,118 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 28 transitions. Stem has 2 letters. Loop has 6 letters. [2025-03-17 19:49:47,118 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-17 19:49:47,119 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 50 transitions. [2025-03-17 19:49:47,121 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-03-17 19:49:47,123 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 21 states and 29 transitions. [2025-03-17 19:49:47,124 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2025-03-17 19:49:47,124 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2025-03-17 19:49:47,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 29 transitions. [2025-03-17 19:49:47,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-03-17 19:49:47,124 INFO L218 hiAutomatonCegarLoop]: Abstraction has 21 states and 29 transitions. [2025-03-17 19:49:47,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 29 transitions. [2025-03-17 19:49:47,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2025-03-17 19:49:47,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:47,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 20 transitions. [2025-03-17 19:49:47,141 INFO L240 hiAutomatonCegarLoop]: Abstraction has 15 states and 20 transitions. [2025-03-17 19:49:47,142 INFO L432 stractBuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2025-03-17 19:49:47,142 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-03-17 19:49:47,142 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 20 transitions. [2025-03-17 19:49:47,142 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-03-17 19:49:47,142 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-17 19:49:47,142 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-17 19:49:47,142 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-03-17 19:49:47,142 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-03-17 19:49:47,142 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~post5#1, main_#t~bitwise6#1, main_~a~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~x~0#1;havoc main_#t~nondet3#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;havoc main_#t~nondet4#1;main_~a~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;" "assume !!(main_~a~0#1 > 0);" "assume main_~x~0#1 > 0;main_#t~post5#1 := main_~a~0#1;main_~a~0#1 := main_#t~post5#1 - 1;havoc main_#t~post5#1;" [2025-03-17 19:49:47,142 INFO L754 eck$LassoCheckResult]: Loop: "assume !(0 == main_~x~0#1 || 0 == main_~a~0#1);" "assume main_~x~0#1 == main_~a~0#1;main_#t~bitwise6#1 := main_~x~0#1;" "main_~x~0#1 := main_#t~bitwise6#1;havoc main_#t~bitwise6#1;" "assume main_~x~0#1 > 0;main_#t~post5#1 := main_~a~0#1;main_~a~0#1 := main_#t~post5#1 - 1;havoc main_#t~post5#1;" [2025-03-17 19:49:47,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:49:47,143 INFO L85 PathProgramCache]: Analyzing trace with hash 40680, now seen corresponding path program 1 times [2025-03-17 19:49:47,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:49:47,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810762892] [2025-03-17 19:49:47,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:49:47,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:49:47,147 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 19:49:47,148 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 19:49:47,148 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:47,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:49:47,148 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:49:47,148 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 19:49:47,149 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 19:49:47,149 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:47,149 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:49:47,150 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:49:47,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:49:47,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1134980, now seen corresponding path program 1 times [2025-03-17 19:49:47,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:49:47,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070261318] [2025-03-17 19:49:47,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:49:47,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:49:47,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 19:49:47,160 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 19:49:47,160 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:47,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:49:47,160 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:49:47,163 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 19:49:47,165 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 19:49:47,165 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:47,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:49:47,166 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:49:47,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:49:47,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1085659925, now seen corresponding path program 1 times [2025-03-17 19:49:47,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:49:47,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203482575] [2025-03-17 19:49:47,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:49:47,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:49:47,170 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:49:47,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:49:47,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:47,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:49:47,172 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:49:47,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:49:47,175 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:49:47,175 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:47,175 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:49:47,176 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:49:47,211 INFO L204 LassoAnalysis]: Preferences: [2025-03-17 19:49:47,212 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-17 19:49:47,212 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-17 19:49:47,212 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-17 19:49:47,212 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-03-17 19:49:47,212 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:47,212 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-17 19:49:47,212 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-17 19:49:47,212 INFO L132 ssoRankerPreferences]: Filename of dumped script: and-01.i_Iteration2_Loop [2025-03-17 19:49:47,212 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-17 19:49:47,212 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-17 19:49:47,213 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:47,220 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:47,222 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:47,224 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:47,226 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:47,228 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:47,282 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-17 19:49:47,283 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-03-17 19:49:47,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:47,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:49:47,287 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 19:49:47,288 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 19:49:47,290 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-17 19:49:47,290 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-17 19:49:47,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2025-03-17 19:49:47,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:47,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:49:47,311 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 19:49:47,312 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 19:49:47,314 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-03-17 19:49:47,315 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-17 19:49:47,377 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-03-17 19:49:47,381 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 19:49:47,382 INFO L204 LassoAnalysis]: Preferences: [2025-03-17 19:49:47,382 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-17 19:49:47,382 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-17 19:49:47,382 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-17 19:49:47,382 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-03-17 19:49:47,382 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:47,382 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-17 19:49:47,382 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-17 19:49:47,382 INFO L132 ssoRankerPreferences]: Filename of dumped script: and-01.i_Iteration2_Loop [2025-03-17 19:49:47,382 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-17 19:49:47,382 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-17 19:49:47,385 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:47,393 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:47,398 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:47,400 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:47,402 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:47,404 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:47,457 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-17 19:49:47,457 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-03-17 19:49:47,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:47,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:49:47,460 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 19:49:47,461 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 19:49:47,462 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 19:49:47,472 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-17 19:49:47,472 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-03-17 19:49:47,472 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-17 19:49:47,472 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-17 19:49:47,472 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-17 19:49:47,473 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-03-17 19:49:47,473 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-03-17 19:49:47,474 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-17 19:49:47,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-03-17 19:49:47,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:47,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:49:47,481 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 19:49:47,483 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 19:49:47,484 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 19:49:47,494 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-17 19:49:47,494 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-03-17 19:49:47,494 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-17 19:49:47,494 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-17 19:49:47,494 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-17 19:49:47,496 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-03-17 19:49:47,496 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-03-17 19:49:47,502 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-03-17 19:49:47,506 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-03-17 19:49:47,506 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-03-17 19:49:47,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:47,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:49:47,508 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 19:49:47,508 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 19:49:47,509 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-03-17 19:49:47,509 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-03-17 19:49:47,509 INFO L474 LassoAnalysis]: Proved termination. [2025-03-17 19:49:47,509 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~a~0#1) = 1*ULTIMATE.start_main_~a~0#1 Supporting invariants [] [2025-03-17 19:49:47,515 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 19:49:47,515 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-03-17 19:49:47,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:49:47,526 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 19:49:47,526 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 19:49:47,527 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:47,527 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:49:47,529 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-17 19:49:47,529 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:49:47,543 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 19:49:47,547 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 19:49:47,548 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:47,548 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:49:47,549 WARN L254 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 19:49:47,549 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:49:47,583 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 19:49:47,583 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 19:49:47,584 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 20 transitions. cyclomatic complexity: 7 Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 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 19:49:47,620 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 20 transitions. cyclomatic complexity: 7. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 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 40 states and 53 transitions. Complement of second has 8 states. [2025-03-17 19:49:47,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2025-03-17 19:49:47,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 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 19:49:47,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2025-03-17 19:49:47,623 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 3 letters. Loop has 4 letters. [2025-03-17 19:49:47,623 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-17 19:49:47,623 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 7 letters. Loop has 4 letters. [2025-03-17 19:49:47,623 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-17 19:49:47,623 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 3 letters. Loop has 8 letters. [2025-03-17 19:49:47,623 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-17 19:49:47,623 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 53 transitions. [2025-03-17 19:49:47,625 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-03-17 19:49:47,625 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 36 states and 48 transitions. [2025-03-17 19:49:47,626 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2025-03-17 19:49:47,626 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2025-03-17 19:49:47,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 48 transitions. [2025-03-17 19:49:47,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-03-17 19:49:47,626 INFO L218 hiAutomatonCegarLoop]: Abstraction has 36 states and 48 transitions. [2025-03-17 19:49:47,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 48 transitions. [2025-03-17 19:49:47,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2025-03-17 19:49:47,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 34 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:47,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 47 transitions. [2025-03-17 19:49:47,628 INFO L240 hiAutomatonCegarLoop]: Abstraction has 35 states and 47 transitions. [2025-03-17 19:49:47,628 INFO L432 stractBuchiCegarLoop]: Abstraction has 35 states and 47 transitions. [2025-03-17 19:49:47,628 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-03-17 19:49:47,628 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 47 transitions. [2025-03-17 19:49:47,629 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-03-17 19:49:47,629 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-17 19:49:47,629 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-17 19:49:47,630 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-03-17 19:49:47,630 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2025-03-17 19:49:47,630 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~post5#1, main_#t~bitwise6#1, main_~a~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~x~0#1;havoc main_#t~nondet3#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;havoc main_#t~nondet4#1;main_~a~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;" "assume !!(main_~a~0#1 > 0);" "assume main_~x~0#1 > 0;main_#t~post5#1 := main_~a~0#1;main_~a~0#1 := main_#t~post5#1 - 1;havoc main_#t~post5#1;" "assume !(0 == main_~x~0#1 || 0 == main_~a~0#1);" [2025-03-17 19:49:47,630 INFO L754 eck$LassoCheckResult]: Loop: "assume !(main_~x~0#1 == main_~a~0#1);" "havoc main_#t~bitwise6#1;assume (((((main_~x~0#1 < 0 && main_~a~0#1 >= 0) || main_#t~bitwise6#1 <= main_~x~0#1) && ((main_~x~0#1 >= 0 && main_~a~0#1 < 0) || main_#t~bitwise6#1 <= main_~a~0#1)) && ((main_~x~0#1 < 0 && main_~a~0#1 < 0) || main_#t~bitwise6#1 >= 0)) && ((main_~x~0#1 >= 0 && main_~a~0#1 >= 0) || main_#t~bitwise6#1 > main_~x~0#1 + main_~a~0#1)) && main_#t~bitwise6#1 >= -2147483648;" "main_~x~0#1 := main_#t~bitwise6#1;havoc main_#t~bitwise6#1;" "assume main_~x~0#1 > 0;main_#t~post5#1 := main_~a~0#1;main_~a~0#1 := main_#t~post5#1 - 1;havoc main_#t~post5#1;" "assume !(0 == main_~x~0#1 || 0 == main_~a~0#1);" [2025-03-17 19:49:47,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:49:47,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1261087, now seen corresponding path program 1 times [2025-03-17 19:49:47,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:49:47,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037953007] [2025-03-17 19:49:47,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:49:47,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:49:47,633 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 19:49:47,634 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 19:49:47,634 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:47,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:49:47,634 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:49:47,635 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 19:49:47,636 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 19:49:47,636 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:47,636 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:49:47,637 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:49:47,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:49:47,637 INFO L85 PathProgramCache]: Analyzing trace with hash 34558776, now seen corresponding path program 1 times [2025-03-17 19:49:47,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:49:47,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654695284] [2025-03-17 19:49:47,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:49:47,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:49:47,640 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 19:49:47,647 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 19:49:47,647 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:47,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:49:47,647 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:49:47,648 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 19:49:47,654 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 19:49:47,654 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:47,654 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:49:47,659 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:49:47,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:49:47,660 INFO L85 PathProgramCache]: Analyzing trace with hash 360986586, now seen corresponding path program 1 times [2025-03-17 19:49:47,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:49:47,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530060026] [2025-03-17 19:49:47,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:49:47,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:49:47,663 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:49:47,669 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:49:47,671 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:47,672 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:49:47,672 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:49:47,674 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:49:47,677 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:49:47,677 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:47,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:49:47,678 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:49:47,813 INFO L204 LassoAnalysis]: Preferences: [2025-03-17 19:49:47,813 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-17 19:49:47,813 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-17 19:49:47,813 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-17 19:49:47,813 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-03-17 19:49:47,813 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:47,813 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-17 19:49:47,813 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-17 19:49:47,813 INFO L132 ssoRankerPreferences]: Filename of dumped script: and-01.i_Iteration3_Loop [2025-03-17 19:49:47,813 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-17 19:49:47,813 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-17 19:49:47,814 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:47,816 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:47,817 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:47,819 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:47,842 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:47,844 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:47,887 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2025-03-17 19:49:48,006 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 19:49:48,071 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-17 19:49:48,071 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-03-17 19:49:48,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:48,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:49:48,073 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 19:49:48,074 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 19:49:48,075 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-17 19:49:48,075 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-17 19:49:48,086 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-17 19:49:48,086 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5#1=0} Honda state: {ULTIMATE.start_main_#t~post5#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-03-17 19:49:48,091 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 19:49:48,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:48,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:49:48,093 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-17 19:49:48,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2025-03-17 19:49:48,095 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-17 19:49:48,096 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-17 19:49:48,107 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-17 19:49:48,107 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~bitwise6#1=0} Honda state: {ULTIMATE.start_main_#t~bitwise6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-03-17 19:49:48,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2025-03-17 19:49:48,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:48,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:49:48,115 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-17 19:49:48,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2025-03-17 19:49:48,116 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-17 19:49:48,116 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-17 19:49:48,133 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-17 19:49:48,133 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~P_PID_5=1} Honda state: {v_rep~unnamed0~0~P_PID_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-03-17 19:49:48,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2025-03-17 19:49:48,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:48,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:49:48,140 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-17 19:49:48,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2025-03-17 19:49:48,142 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-17 19:49:48,142 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-17 19:49:48,158 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2025-03-17 19:49:48,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:48,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:49:48,160 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-17 19:49:48,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2025-03-17 19:49:48,163 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-03-17 19:49:48,163 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-17 19:49:48,239 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-17 19:49:48,239 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=3, ULTIMATE.start_main_~a~0#1=-5} Honda state: {ULTIMATE.start_main_~x~0#1=3, ULTIMATE.start_main_~a~0#1=-5} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=0, ULTIMATE.start_main_~a~0#1=0}, {ULTIMATE.start_main_~x~0#1=0, ULTIMATE.start_main_~a~0#1=-1}, {ULTIMATE.start_main_~x~0#1=0, ULTIMATE.start_main_~a~0#1=0}] Lambdas: [15, 1, 15] Nus: [0, 0] [2025-03-17 19:49:48,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2025-03-17 19:49:48,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:48,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:49:48,247 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-17 19:49:48,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2025-03-17 19:49:48,248 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-17 19:49:48,248 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-17 19:49:48,265 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-17 19:49:48,265 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~P_PGID_5=2} Honda state: {v_rep~unnamed0~0~P_PGID_5=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-03-17 19:49:48,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2025-03-17 19:49:48,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:48,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:49:48,272 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-17 19:49:48,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2025-03-17 19:49:48,274 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-17 19:49:48,274 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-17 19:49:48,291 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-17 19:49:48,291 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~P_ALL_5=0} Honda state: {v_rep~unnamed0~0~P_ALL_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-03-17 19:49:48,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2025-03-17 19:49:48,319 INFO L204 LassoAnalysis]: Preferences: [2025-03-17 19:49:48,319 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-17 19:49:48,319 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-17 19:49:48,319 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-17 19:49:48,319 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-03-17 19:49:48,319 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:48,319 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-17 19:49:48,319 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-17 19:49:48,319 INFO L132 ssoRankerPreferences]: Filename of dumped script: and-01.i_Iteration3_Lasso [2025-03-17 19:49:48,319 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-17 19:49:48,319 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-17 19:49:48,320 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:48,347 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:48,348 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:48,350 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:48,352 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:48,353 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:48,355 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:48,356 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:48,357 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:48,399 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2025-03-17 19:49:48,557 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-17 19:49:48,560 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-03-17 19:49:48,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:48,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:49:48,562 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-17 19:49:48,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2025-03-17 19:49:48,565 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-17 19:49:48,565 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-17 19:49:48,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2025-03-17 19:49:48,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:48,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:49:48,585 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-17 19:49:48,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2025-03-17 19:49:48,586 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-03-17 19:49:48,586 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-17 19:49:48,707 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-03-17 19:49:48,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2025-03-17 19:49:48,714 INFO L204 LassoAnalysis]: Preferences: [2025-03-17 19:49:48,714 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-17 19:49:48,714 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-17 19:49:48,714 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-17 19:49:48,715 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-03-17 19:49:48,715 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:48,715 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-17 19:49:48,715 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-17 19:49:48,715 INFO L132 ssoRankerPreferences]: Filename of dumped script: and-01.i_Iteration3_Lasso [2025-03-17 19:49:48,715 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-17 19:49:48,715 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-17 19:49:48,717 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:48,746 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:48,749 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:48,750 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:48,752 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:48,753 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:48,755 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:48,756 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:48,757 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:48,810 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2025-03-17 19:49:48,958 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-17 19:49:48,958 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-03-17 19:49:48,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:48,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:49:48,960 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-17 19:49:48,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2025-03-17 19:49:48,966 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 19:49:48,976 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-17 19:49:48,977 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-17 19:49:48,977 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2025-03-17 19:49:48,977 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-17 19:49:49,001 INFO L401 nArgumentSynthesizer]: We have 48 Motzkin's Theorem applications. [2025-03-17 19:49:49,001 INFO L402 nArgumentSynthesizer]: A total of 8 supporting invariants were added. [2025-03-17 19:49:49,048 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-03-17 19:49:49,095 INFO L443 ModelExtractionUtils]: Simplification made 15 calls to the SMT solver. [2025-03-17 19:49:49,095 INFO L444 ModelExtractionUtils]: 14 out of 28 variables were initially zero. Simplification set additionally 11 variables to zero. [2025-03-17 19:49:49,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:49,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:49:49,097 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-17 19:49:49,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2025-03-17 19:49:49,102 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-03-17 19:49:49,116 INFO L438 nArgumentSynthesizer]: Removed 7 redundant supporting invariants from a total of 8. [2025-03-17 19:49:49,116 INFO L474 LassoAnalysis]: Proved termination. [2025-03-17 19:49:49,116 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~a~0#1) = 1*ULTIMATE.start_main_~a~0#1 Supporting invariants [1*ULTIMATE.start_main_~a~0#1 >= 0] [2025-03-17 19:49:49,124 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2025-03-17 19:49:49,127 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2025-03-17 19:49:49,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:49:49,147 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 19:49:49,149 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 19:49:49,149 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:49,149 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:49:49,149 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:49:49,149 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:49:49,172 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 19:49:49,174 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 19:49:49,174 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:49,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:49:49,175 WARN L254 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 19:49:49,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:49:49,228 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 19:49:49,228 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.3 stem predicates 4 loop predicates [2025-03-17 19:49:49,228 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 47 transitions. cyclomatic complexity: 16 Second operand has 8 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:49,297 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 47 transitions. cyclomatic complexity: 16. Second operand has 8 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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 125 states and 180 transitions. Complement of second has 12 states. [2025-03-17 19:49:49,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 3 stem states 3 non-accepting loop states 2 accepting loop states [2025-03-17 19:49:49,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:49,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 20 transitions. [2025-03-17 19:49:49,299 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 20 transitions. Stem has 4 letters. Loop has 5 letters. [2025-03-17 19:49:49,299 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-17 19:49:49,299 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 20 transitions. Stem has 9 letters. Loop has 5 letters. [2025-03-17 19:49:49,299 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-17 19:49:49,299 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 20 transitions. Stem has 4 letters. Loop has 10 letters. [2025-03-17 19:49:49,299 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-17 19:49:49,300 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 125 states and 180 transitions. [2025-03-17 19:49:49,302 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-03-17 19:49:49,303 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 125 states to 52 states and 71 transitions. [2025-03-17 19:49:49,303 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2025-03-17 19:49:49,303 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2025-03-17 19:49:49,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 71 transitions. [2025-03-17 19:49:49,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-03-17 19:49:49,303 INFO L218 hiAutomatonCegarLoop]: Abstraction has 52 states and 71 transitions. [2025-03-17 19:49:49,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 71 transitions. [2025-03-17 19:49:49,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 35. [2025-03-17 19:49:49,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 34 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:49,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2025-03-17 19:49:49,306 INFO L240 hiAutomatonCegarLoop]: Abstraction has 35 states and 46 transitions. [2025-03-17 19:49:49,306 INFO L432 stractBuchiCegarLoop]: Abstraction has 35 states and 46 transitions. [2025-03-17 19:49:49,306 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-03-17 19:49:49,306 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 46 transitions. [2025-03-17 19:49:49,307 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-03-17 19:49:49,307 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-17 19:49:49,307 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-17 19:49:49,307 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2025-03-17 19:49:49,307 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2025-03-17 19:49:49,307 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~post5#1, main_#t~bitwise6#1, main_~a~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~x~0#1;havoc main_#t~nondet3#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;havoc main_#t~nondet4#1;main_~a~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;" "assume !!(main_~a~0#1 > 0);" "assume main_~x~0#1 > 0;main_#t~post5#1 := main_~a~0#1;main_~a~0#1 := main_#t~post5#1 - 1;havoc main_#t~post5#1;" "assume 0 == main_~x~0#1 || 0 == main_~a~0#1;main_#t~bitwise6#1 := 0;" "main_~x~0#1 := main_#t~bitwise6#1;havoc main_#t~bitwise6#1;" "assume main_~x~0#1 > 0;main_#t~post5#1 := main_~a~0#1;main_~a~0#1 := main_#t~post5#1 - 1;havoc main_#t~post5#1;" [2025-03-17 19:49:49,307 INFO L754 eck$LassoCheckResult]: Loop: "assume !(0 == main_~x~0#1 || 0 == main_~a~0#1);" "assume !(main_~x~0#1 == main_~a~0#1);" "havoc main_#t~bitwise6#1;assume (((((main_~x~0#1 < 0 && main_~a~0#1 >= 0) || main_#t~bitwise6#1 <= main_~x~0#1) && ((main_~x~0#1 >= 0 && main_~a~0#1 < 0) || main_#t~bitwise6#1 <= main_~a~0#1)) && ((main_~x~0#1 < 0 && main_~a~0#1 < 0) || main_#t~bitwise6#1 >= 0)) && ((main_~x~0#1 >= 0 && main_~a~0#1 >= 0) || main_#t~bitwise6#1 > main_~x~0#1 + main_~a~0#1)) && main_#t~bitwise6#1 >= -2147483648;" "main_~x~0#1 := main_#t~bitwise6#1;havoc main_#t~bitwise6#1;" "assume main_~x~0#1 > 0;main_#t~post5#1 := main_~a~0#1;main_~a~0#1 := main_#t~post5#1 - 1;havoc main_#t~post5#1;" [2025-03-17 19:49:49,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:49:49,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1211899841, now seen corresponding path program 2 times [2025-03-17 19:49:49,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:49:49,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308831215] [2025-03-17 19:49:49,308 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:49:49,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:49:49,312 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 6 statements into 2 equivalence classes. [2025-03-17 19:49:49,314 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:49:49,314 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:49:49,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:49:49,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:49:49,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:49:49,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308831215] [2025-03-17 19:49:49,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308831215] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:49:49,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:49:49,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:49:49,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661786286] [2025-03-17 19:49:49,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:49:49,354 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-03-17 19:49:49,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:49:49,354 INFO L85 PathProgramCache]: Analyzing trace with hash 35285076, now seen corresponding path program 2 times [2025-03-17 19:49:49,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:49:49,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937995579] [2025-03-17 19:49:49,354 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:49:49,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:49:49,357 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 5 statements into 1 equivalence classes. [2025-03-17 19:49:49,359 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 19:49:49,360 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:49:49,360 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:49:49,360 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:49:49,361 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 19:49:49,363 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 19:49:49,363 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:49,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:49:49,364 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:49:49,458 INFO L204 LassoAnalysis]: Preferences: [2025-03-17 19:49:49,458 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-17 19:49:49,458 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-17 19:49:49,458 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-17 19:49:49,458 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-03-17 19:49:49,459 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:49,459 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-17 19:49:49,459 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-17 19:49:49,459 INFO L132 ssoRankerPreferences]: Filename of dumped script: and-01.i_Iteration4_Loop [2025-03-17 19:49:49,459 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-17 19:49:49,459 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-17 19:49:49,460 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:49,464 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:49,487 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:49,489 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:49,491 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:49,492 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-17 19:49:49,534 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2025-03-17 19:49:49,641 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-17 19:49:49,641 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-03-17 19:49:49,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:49,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:49:49,643 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-17 19:49:49,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2025-03-17 19:49:49,645 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-17 19:49:49,645 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-17 19:49:49,665 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-17 19:49:49,665 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~P_ALL_8=0} Honda state: {v_rep~unnamed0~0~P_ALL_8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-03-17 19:49:49,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2025-03-17 19:49:49,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:49,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:49:49,677 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-17 19:49:49,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2025-03-17 19:49:49,679 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-17 19:49:49,679 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-17 19:49:49,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2025-03-17 19:49:49,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:49,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:49:49,700 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-17 19:49:49,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2025-03-17 19:49:49,703 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-03-17 19:49:49,703 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-17 19:49:49,816 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-17 19:49:49,816 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=1, ULTIMATE.start_main_~a~0#1=-1} Honda state: {ULTIMATE.start_main_~x~0#1=1, ULTIMATE.start_main_~a~0#1=-1} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=0, ULTIMATE.start_main_~a~0#1=0}, {ULTIMATE.start_main_~x~0#1=0, ULTIMATE.start_main_~a~0#1=-1}, {ULTIMATE.start_main_~x~0#1=0, ULTIMATE.start_main_~a~0#1=0}] Lambdas: [2, 1, 0] Nus: [0, 0] [2025-03-17 19:49:49,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2025-03-17 19:49:49,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:49,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:49:49,826 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-17 19:49:49,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2025-03-17 19:49:49,828 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-17 19:49:49,828 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-17 19:49:49,838 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-17 19:49:49,838 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~bitwise6#1=0} Honda state: {ULTIMATE.start_main_#t~bitwise6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-03-17 19:49:49,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2025-03-17 19:49:49,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:49,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:49:49,846 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-17 19:49:49,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2025-03-17 19:49:49,848 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-17 19:49:49,848 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-17 19:49:49,864 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-17 19:49:49,864 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~P_PID_8=1} Honda state: {v_rep~unnamed0~0~P_PID_8=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-03-17 19:49:49,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2025-03-17 19:49:49,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:49,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:49:49,871 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-17 19:49:49,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2025-03-17 19:49:49,873 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-17 19:49:49,873 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-17 19:49:49,889 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-17 19:49:49,889 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~P_PGID_8=2} Honda state: {v_rep~unnamed0~0~P_PGID_8=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-03-17 19:49:49,895 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2025-03-17 19:49:49,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:49:49,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:49:49,896 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-17 19:49:49,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2025-03-17 19:49:49,898 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-17 19:49:49,898 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-17 19:49:49,908 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-17 19:49:49,908 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5#1=0} Honda state: {ULTIMATE.start_main_#t~post5#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-03-17 19:49:49,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2025-03-17 19:49:49,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:49:49,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:49:49,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:49:49,917 INFO L87 Difference]: Start difference. First operand 35 states and 46 transitions. cyclomatic complexity: 15 Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:49,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 19:49:49,922 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2025-03-17 19:49:49,922 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 7 transitions. [2025-03-17 19:49:49,922 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-03-17 19:49:49,922 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 0 states and 0 transitions. [2025-03-17 19:49:49,922 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-03-17 19:49:49,922 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-03-17 19:49:49,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-03-17 19:49:49,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-03-17 19:49:49,923 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-17 19:49:49,923 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-17 19:49:49,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:49:49,923 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-17 19:49:49,924 INFO L338 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-03-17 19:49:49,924 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-03-17 19:49:49,924 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-03-17 19:49:49,924 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-03-17 19:49:49,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.03 07:49:49 BoogieIcfgContainer [2025-03-17 19:49:49,929 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-03-17 19:49:49,929 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 19:49:49,929 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 19:49:49,929 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 19:49:49,930 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:49:46" (3/4) ... [2025-03-17 19:49:49,931 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-17 19:49:49,931 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 19:49:49,932 INFO L158 Benchmark]: Toolchain (without parser) took 4322.37ms. Allocated memory is still 142.6MB. Free memory was 112.5MB in the beginning and 45.5MB in the end (delta: 67.0MB). Peak memory consumption was 62.7MB. Max. memory is 16.1GB. [2025-03-17 19:49:49,932 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 126.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:49:49,932 INFO L158 Benchmark]: CACSL2BoogieTranslator took 289.53ms. Allocated memory is still 142.6MB. Free memory was 112.5MB in the beginning and 97.0MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 19:49:49,932 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.64ms. Allocated memory is still 142.6MB. Free memory was 96.5MB in the beginning and 95.6MB in the end (delta: 898.0kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:49:49,932 INFO L158 Benchmark]: Boogie Preprocessor took 21.68ms. Allocated memory is still 142.6MB. Free memory was 95.6MB in the beginning and 94.7MB in the end (delta: 957.4kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:49:49,932 INFO L158 Benchmark]: IcfgBuilder took 173.86ms. Allocated memory is still 142.6MB. Free memory was 94.7MB in the beginning and 84.0MB in the end (delta: 10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 19:49:49,933 INFO L158 Benchmark]: BuchiAutomizer took 3802.43ms. Allocated memory is still 142.6MB. Free memory was 84.0MB in the beginning and 45.6MB in the end (delta: 38.4MB). Peak memory consumption was 37.5MB. Max. memory is 16.1GB. [2025-03-17 19:49:49,933 INFO L158 Benchmark]: Witness Printer took 2.08ms. Allocated memory is still 142.6MB. Free memory was 45.6MB in the beginning and 45.5MB in the end (delta: 36.9kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:49:49,934 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 126.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 289.53ms. Allocated memory is still 142.6MB. Free memory was 112.5MB in the beginning and 97.0MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.64ms. Allocated memory is still 142.6MB. Free memory was 96.5MB in the beginning and 95.6MB in the end (delta: 898.0kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.68ms. Allocated memory is still 142.6MB. Free memory was 95.6MB in the beginning and 94.7MB in the end (delta: 957.4kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 173.86ms. Allocated memory is still 142.6MB. Free memory was 94.7MB in the beginning and 84.0MB in the end (delta: 10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 3802.43ms. Allocated memory is still 142.6MB. Free memory was 84.0MB in the beginning and 45.6MB in the end (delta: 38.4MB). Peak memory consumption was 37.5MB. Max. memory is 16.1GB. * Witness Printer took 2.08ms. Allocated memory is still 142.6MB. Free memory was 45.6MB in the beginning and 45.5MB in the end (delta: 36.9kB). 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 x and consists of 6 locations. One deterministic module has affine ranking function a and consists of 5 locations. One deterministic module has affine ranking function a and consists of 8 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.7s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 3.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 24 StatesRemovedByMinimization, 3 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, 36 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 26 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 104 IncrementalHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 16 mSDtfsCounter, 104 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN1 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital37 mio100 ax175 hnf100 lsp62 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq157 hnf93 smp97 dnf661 smp55 tf105 neg100 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 157ms VariablesStem: 2 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 4 SupportingInvariants: 8 MotzkinApplications: 48 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 13 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s 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 19:49:49,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2025-03-17 19:49:50,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE