./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loop-invgen/fragtest_simple.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/loop-invgen/fragtest_simple.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be3b53cc5f9badbf5402cafcfa5766831674eb009261bc7c1bcbe9580aece38e --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 07:18:40,030 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 07:18:40,079 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2025-03-09 07:18:40,083 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 07:18:40,083 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 07:18:40,083 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.Remove goto edges from RCFG [2025-03-09 07:18:40,110 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 07:18:40,111 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 07:18:40,111 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 07:18:40,111 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 07:18:40,111 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 07:18:40,112 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 07:18:40,112 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 07:18:40,112 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 07:18:40,112 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-03-09 07:18:40,112 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-03-09 07:18:40,112 INFO L153 SettingsManager]: * Use old map elimination=false [2025-03-09 07:18:40,112 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-03-09 07:18:40,112 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-03-09 07:18:40,112 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-03-09 07:18:40,112 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 07:18:40,112 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-03-09 07:18:40,112 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 07:18:40,112 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 07:18:40,112 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 07:18:40,112 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 07:18:40,112 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-03-09 07:18:40,112 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-03-09 07:18:40,112 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-03-09 07:18:40,112 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 07:18:40,113 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 07:18:40,113 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 07:18:40,113 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-03-09 07:18:40,113 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 07:18:40,113 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 07:18:40,113 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 07:18:40,113 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 07:18:40,113 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 07:18:40,113 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 07:18:40,113 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-03-09 07:18:40,113 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be3b53cc5f9badbf5402cafcfa5766831674eb009261bc7c1bcbe9580aece38e [2025-03-09 07:18:40,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 07:18:40,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 07:18:40,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 07:18:40,327 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 07:18:40,327 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 07:18:40,328 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/fragtest_simple.i [2025-03-09 07:18:41,433 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a1c60212/f27b1565270c43649a6b0b56842be519/FLAGbcddf76a9 [2025-03-09 07:18:41,658 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 07:18:41,661 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/fragtest_simple.i [2025-03-09 07:18:41,690 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a1c60212/f27b1565270c43649a6b0b56842be519/FLAGbcddf76a9 [2025-03-09 07:18:42,010 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a1c60212/f27b1565270c43649a6b0b56842be519 [2025-03-09 07:18:42,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 07:18:42,014 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 07:18:42,015 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 07:18:42,015 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 07:18:42,018 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 07:18:42,019 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 07:18:42" (1/1) ... [2025-03-09 07:18:42,022 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c92bb3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:18:42, skipping insertion in model container [2025-03-09 07:18:42,022 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 07:18:42" (1/1) ... [2025-03-09 07:18:42,034 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 07:18:42,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 07:18:42,147 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 07:18:42,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 07:18:42,173 INFO L204 MainTranslator]: Completed translation [2025-03-09 07:18:42,174 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:18:42 WrapperNode [2025-03-09 07:18:42,174 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 07:18:42,175 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 07:18:42,175 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 07:18:42,175 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 07:18:42,179 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:18:42" (1/1) ... [2025-03-09 07:18:42,183 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:18:42" (1/1) ... [2025-03-09 07:18:42,194 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2025-03-09 07:18:42,195 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 07:18:42,196 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 07:18:42,196 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 07:18:42,196 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 07:18:42,200 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:18:42" (1/1) ... [2025-03-09 07:18:42,201 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:18:42" (1/1) ... [2025-03-09 07:18:42,202 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:18:42" (1/1) ... [2025-03-09 07:18:42,214 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-09 07:18:42,215 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:18:42" (1/1) ... [2025-03-09 07:18:42,215 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:18:42" (1/1) ... [2025-03-09 07:18:42,218 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:18:42" (1/1) ... [2025-03-09 07:18:42,220 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:18:42" (1/1) ... [2025-03-09 07:18:42,220 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:18:42" (1/1) ... [2025-03-09 07:18:42,221 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:18:42" (1/1) ... [2025-03-09 07:18:42,222 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 07:18:42,222 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 07:18:42,222 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 07:18:42,222 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 07:18:42,223 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:18:42" (1/1) ... [2025-03-09 07:18:42,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 07:18:42,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 07:18:42,260 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) [2025-03-09 07:18:42,266 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 [2025-03-09 07:18:42,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 07:18:42,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 07:18:42,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 07:18:42,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 07:18:42,328 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 07:18:42,330 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 07:18:42,408 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2025-03-09 07:18:42,408 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 07:18:42,414 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 07:18:42,415 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 07:18:42,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 07:18:42 BoogieIcfgContainer [2025-03-09 07:18:42,415 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 07:18:42,416 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-03-09 07:18:42,416 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-03-09 07:18:42,419 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-03-09 07:18:42,420 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-09 07:18:42,420 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.03 07:18:42" (1/3) ... [2025-03-09 07:18:42,420 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2fa4dc06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.03 07:18:42, skipping insertion in model container [2025-03-09 07:18:42,420 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-09 07:18:42,420 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:18:42" (2/3) ... [2025-03-09 07:18:42,421 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2fa4dc06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.03 07:18:42, skipping insertion in model container [2025-03-09 07:18:42,421 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-09 07:18:42,421 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 07:18:42" (3/3) ... [2025-03-09 07:18:42,422 INFO L363 chiAutomizerObserver]: Analyzing ICFG fragtest_simple.i [2025-03-09 07:18:42,454 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-03-09 07:18:42,454 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-03-09 07:18:42,454 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-03-09 07:18:42,454 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-03-09 07:18:42,454 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-03-09 07:18:42,454 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-03-09 07:18:42,454 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-03-09 07:18:42,455 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-03-09 07:18:42,458 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 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) [2025-03-09 07:18:42,467 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 11 [2025-03-09 07:18:42,468 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-09 07:18:42,468 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-09 07:18:42,470 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-03-09 07:18:42,470 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-03-09 07:18:42,470 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-03-09 07:18:42,471 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 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) [2025-03-09 07:18:42,471 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 11 [2025-03-09 07:18:42,471 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-09 07:18:42,471 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-09 07:18:42,472 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-03-09 07:18:42,472 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-03-09 07:18:42,476 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~i~0#1, main_~pvlen~0#1, main_~tmp___1~0#1, main_~k~0#1, main_~n~0#1, main_~j~0#1;havoc main_~i~0#1;havoc main_~pvlen~0#1;havoc main_~tmp___1~0#1;main_~k~0#1 := 0;havoc main_~n~0#1;main_~i~0#1 := 0;havoc main_#t~nondet1#1;main_~pvlen~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" [2025-03-09 07:18:42,476 INFO L754 eck$LassoCheckResult]: Loop: "assume true;havoc main_#t~nondet2#1;" "assume 0 != main_#t~nondet2#1 && main_~i~0#1 <= 1000000;havoc main_#t~nondet2#1;main_~i~0#1 := 1 + main_~i~0#1;" [2025-03-09 07:18:42,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 07:18:42,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1984, now seen corresponding path program 1 times [2025-03-09 07:18:42,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 07:18:42,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112549442] [2025-03-09 07:18:42,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 07:18:42,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 07:18:42,533 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 07:18:42,546 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 07:18:42,547 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:18:42,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:18:42,547 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 07:18:42,551 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 07:18:42,555 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 07:18:42,555 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:18:42,555 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:18:42,568 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 07:18:42,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 07:18:42,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1888, now seen corresponding path program 1 times [2025-03-09 07:18:42,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 07:18:42,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873363124] [2025-03-09 07:18:42,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 07:18:42,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 07:18:42,574 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 07:18:42,579 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 07:18:42,580 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:18:42,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:18:42,580 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 07:18:42,583 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 07:18:42,585 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 07:18:42,585 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:18:42,585 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:18:42,586 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 07:18:42,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 07:18:42,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1907551, now seen corresponding path program 1 times [2025-03-09 07:18:42,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 07:18:42,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319400307] [2025-03-09 07:18:42,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 07:18:42,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 07:18:42,595 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-09 07:18:42,600 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-09 07:18:42,601 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:18:42,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:18:42,602 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 07:18:42,603 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-09 07:18:42,609 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-09 07:18:42,609 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:18:42,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:18:42,611 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 07:18:42,673 INFO L204 LassoAnalysis]: Preferences: [2025-03-09 07:18:42,674 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-09 07:18:42,674 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-09 07:18:42,674 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-09 07:18:42,674 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-03-09 07:18:42,674 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 07:18:42,674 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-09 07:18:42,674 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-09 07:18:42,675 INFO L132 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration1_Loop [2025-03-09 07:18:42,675 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-09 07:18:42,675 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-09 07:18:42,684 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 07:18:42,701 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 07:18:42,738 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-09 07:18:42,738 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-03-09 07:18:42,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 07:18:42,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 07:18:42,748 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) [2025-03-09 07:18:42,749 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 [2025-03-09 07:18:42,750 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-09 07:18:42,750 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 07:18:42,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2025-03-09 07:18:42,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 07:18:42,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 07:18:42,780 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) [2025-03-09 07:18:42,781 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 [2025-03-09 07:18:42,782 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-03-09 07:18:42,782 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 07:18:42,808 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-03-09 07:18:42,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2025-03-09 07:18:42,813 INFO L204 LassoAnalysis]: Preferences: [2025-03-09 07:18:42,813 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-09 07:18:42,813 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-09 07:18:42,813 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-09 07:18:42,813 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-03-09 07:18:42,813 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 07:18:42,813 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-09 07:18:42,813 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-09 07:18:42,813 INFO L132 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration1_Loop [2025-03-09 07:18:42,813 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-09 07:18:42,813 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-09 07:18:42,814 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 07:18:42,821 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 07:18:42,840 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-09 07:18:42,843 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-03-09 07:18:42,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 07:18:42,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 07:18:42,846 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) [2025-03-09 07:18:42,847 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 [2025-03-09 07:18:42,852 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 [2025-03-09 07:18:42,863 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 07:18:42,864 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-03-09 07:18:42,864 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 07:18:42,864 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 07:18:42,864 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 07:18:42,867 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-03-09 07:18:42,867 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-03-09 07:18:42,870 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-03-09 07:18:42,876 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-03-09 07:18:42,878 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-03-09 07:18:42,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 07:18:42,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 07:18:42,883 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) [2025-03-09 07:18:42,884 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 [2025-03-09 07:18:42,884 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-03-09 07:18:42,885 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-03-09 07:18:42,885 INFO L474 LassoAnalysis]: Proved termination. [2025-03-09 07:18:42,886 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 2000001 Supporting invariants [] [2025-03-09 07:18:42,891 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 [2025-03-09 07:18:42,895 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-03-09 07:18:42,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 07:18:42,942 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 07:18:42,947 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 07:18:42,947 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:18:42,947 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 07:18:42,949 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-09 07:18:42,950 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 07:18:42,963 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 07:18:42,965 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 07:18:42,966 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:18:42,966 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 07:18:42,966 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 07:18:42,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 07:18:42,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 07:18:43,005 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2025-03-09 07:18:43,006 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2025-03-09 07:18:43,045 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 39 states and 55 transitions. Complement of second has 6 states. [2025-03-09 07:18:43,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2025-03-09 07:18:43,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2025-03-09 07:18:43,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 28 transitions. [2025-03-09 07:18:43,058 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 28 transitions. Stem has 2 letters. Loop has 2 letters. [2025-03-09 07:18:43,060 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 07:18:43,060 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 28 transitions. Stem has 4 letters. Loop has 2 letters. [2025-03-09 07:18:43,060 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 07:18:43,060 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 28 transitions. Stem has 2 letters. Loop has 4 letters. [2025-03-09 07:18:43,060 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 07:18:43,061 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 55 transitions. [2025-03-09 07:18:43,063 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2025-03-09 07:18:43,065 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 18 states and 25 transitions. [2025-03-09 07:18:43,067 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2025-03-09 07:18:43,068 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2025-03-09 07:18:43,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 25 transitions. [2025-03-09 07:18:43,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-03-09 07:18:43,069 INFO L218 hiAutomatonCegarLoop]: Abstraction has 18 states and 25 transitions. [2025-03-09 07:18:43,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 25 transitions. [2025-03-09 07:18:43,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2025-03-09 07:18:43,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 17 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 07:18:43,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2025-03-09 07:18:43,085 INFO L240 hiAutomatonCegarLoop]: Abstraction has 18 states and 25 transitions. [2025-03-09 07:18:43,085 INFO L432 stractBuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2025-03-09 07:18:43,085 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-03-09 07:18:43,085 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 25 transitions. [2025-03-09 07:18:43,085 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2025-03-09 07:18:43,085 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-09 07:18:43,085 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-09 07:18:43,086 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2025-03-09 07:18:43,086 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-03-09 07:18:43,086 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~i~0#1, main_~pvlen~0#1, main_~tmp___1~0#1, main_~k~0#1, main_~n~0#1, main_~j~0#1;havoc main_~i~0#1;havoc main_~pvlen~0#1;havoc main_~tmp___1~0#1;main_~k~0#1 := 0;havoc main_~n~0#1;main_~i~0#1 := 0;havoc main_#t~nondet1#1;main_~pvlen~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" "assume true;havoc main_#t~nondet2#1;" "assume !(0 != main_#t~nondet2#1 && main_~i~0#1 <= 1000000);havoc main_#t~nondet2#1;" "assume !(main_~i~0#1 > main_~pvlen~0#1);" "main_~i~0#1 := 0;" [2025-03-09 07:18:43,086 INFO L754 eck$LassoCheckResult]: Loop: "assume true;havoc main_#t~nondet3#1;" "assume 0 != main_#t~nondet3#1 && main_~i~0#1 <= 1000000;havoc main_#t~nondet3#1;main_~tmp___1~0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_~i~0#1;main_~k~0#1 := 1 + main_~k~0#1;" [2025-03-09 07:18:43,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 07:18:43,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1833156316, now seen corresponding path program 1 times [2025-03-09 07:18:43,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 07:18:43,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494248618] [2025-03-09 07:18:43,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 07:18:43,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 07:18:43,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 07:18:43,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 07:18:43,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:18:43,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:18:43,093 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 07:18:43,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 07:18:43,097 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 07:18:43,097 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:18:43,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:18:43,099 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 07:18:43,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 07:18:43,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1600, now seen corresponding path program 1 times [2025-03-09 07:18:43,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 07:18:43,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665230196] [2025-03-09 07:18:43,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 07:18:43,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 07:18:43,103 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 07:18:43,104 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 07:18:43,104 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:18:43,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:18:43,104 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 07:18:43,105 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 07:18:43,106 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 07:18:43,106 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:18:43,106 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:18:43,112 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 07:18:43,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 07:18:43,112 INFO L85 PathProgramCache]: Analyzing trace with hash 726628955, now seen corresponding path program 1 times [2025-03-09 07:18:43,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 07:18:43,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15134181] [2025-03-09 07:18:43,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 07:18:43,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 07:18:43,116 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 07:18:43,119 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 07:18:43,119 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:18:43,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:18:43,120 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 07:18:43,125 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 07:18:43,132 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 07:18:43,132 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:18:43,132 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:18:43,134 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 07:18:43,172 INFO L204 LassoAnalysis]: Preferences: [2025-03-09 07:18:43,172 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-09 07:18:43,172 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-09 07:18:43,172 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-09 07:18:43,172 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-03-09 07:18:43,172 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 07:18:43,172 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-09 07:18:43,172 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-09 07:18:43,172 INFO L132 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration2_Loop [2025-03-09 07:18:43,172 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-09 07:18:43,172 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-09 07:18:43,173 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 07:18:43,178 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 07:18:43,187 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 07:18:43,215 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-09 07:18:43,215 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-03-09 07:18:43,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 07:18:43,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 07:18:43,220 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) [2025-03-09 07:18:43,221 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 [2025-03-09 07:18:43,222 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-09 07:18:43,222 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 07:18:43,240 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 [2025-03-09 07:18:43,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 07:18:43,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 07:18:43,242 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) [2025-03-09 07:18:43,243 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 [2025-03-09 07:18:43,244 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-03-09 07:18:43,244 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 07:18:43,268 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-09 07:18:43,269 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~k~0#1=0} Honda state: {ULTIMATE.start_main_~k~0#1=0} Generalized eigenvectors: [{ULTIMATE.start_main_~k~0#1=-1}, {ULTIMATE.start_main_~k~0#1=5}, {ULTIMATE.start_main_~k~0#1=-3}] Lambdas: [6, 1, 1] Nus: [1, 0] [2025-03-09 07:18:43,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-03-09 07:18:43,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 07:18:43,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 07:18:43,277 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) [2025-03-09 07:18:43,278 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 [2025-03-09 07:18:43,279 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-09 07:18:43,279 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 07:18:43,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-03-09 07:18:43,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 07:18:43,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 07:18:43,310 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) [2025-03-09 07:18:43,311 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 [2025-03-09 07:18:43,311 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-03-09 07:18:43,312 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 07:18:43,339 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-03-09 07:18:43,343 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 [2025-03-09 07:18:43,344 INFO L204 LassoAnalysis]: Preferences: [2025-03-09 07:18:43,344 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-09 07:18:43,344 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-09 07:18:43,344 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-09 07:18:43,344 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-03-09 07:18:43,344 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 07:18:43,344 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-09 07:18:43,344 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-09 07:18:43,344 INFO L132 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration2_Loop [2025-03-09 07:18:43,344 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-09 07:18:43,344 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-09 07:18:43,345 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 07:18:43,349 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 07:18:43,354 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 07:18:43,403 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-09 07:18:43,403 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-03-09 07:18:43,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 07:18:43,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 07:18:43,409 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) [2025-03-09 07:18:43,409 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 [2025-03-09 07:18:43,411 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 [2025-03-09 07:18:43,412 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 [2025-03-09 07:18:43,422 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 07:18:43,422 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-03-09 07:18:43,422 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 07:18:43,423 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 07:18:43,423 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 07:18:43,423 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-03-09 07:18:43,423 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-03-09 07:18:43,425 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-09 07:18:43,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2025-03-09 07:18:43,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 07:18:43,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 07:18:43,434 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) [2025-03-09 07:18:43,435 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 [2025-03-09 07:18:43,435 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 [2025-03-09 07:18:43,445 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 07:18:43,446 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-03-09 07:18:43,446 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 07:18:43,446 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 07:18:43,446 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 07:18:43,446 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-03-09 07:18:43,446 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-03-09 07:18:43,451 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-03-09 07:18:43,453 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-03-09 07:18:43,454 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-03-09 07:18:43,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 07:18:43,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 07:18:43,456 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) [2025-03-09 07:18:43,457 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 [2025-03-09 07:18:43,457 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-03-09 07:18:43,457 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-03-09 07:18:43,458 INFO L474 LassoAnalysis]: Proved termination. [2025-03-09 07:18:43,458 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 2000001 Supporting invariants [] [2025-03-09 07:18:43,463 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 [2025-03-09 07:18:43,465 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-03-09 07:18:43,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 07:18:43,483 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 07:18:43,487 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 07:18:43,487 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:18:43,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 07:18:43,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-09 07:18:43,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 07:18:43,502 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 07:18:43,504 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 07:18:43,504 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:18:43,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 07:18:43,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 07:18:43,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 07:18:43,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 07:18:43,508 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2025-03-09 07:18:43,509 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 25 transitions. cyclomatic complexity: 10 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2025-03-09 07:18:43,528 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 25 transitions. cyclomatic complexity: 10. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 39 states and 52 transitions. Complement of second has 6 states. [2025-03-09 07:18:43,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2025-03-09 07:18:43,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2025-03-09 07:18:43,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 29 transitions. [2025-03-09 07:18:43,533 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 6 letters. Loop has 2 letters. [2025-03-09 07:18:43,533 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 07:18:43,533 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 8 letters. Loop has 2 letters. [2025-03-09 07:18:43,533 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 07:18:43,533 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 6 letters. Loop has 4 letters. [2025-03-09 07:18:43,533 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 07:18:43,533 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 52 transitions. [2025-03-09 07:18:43,534 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2025-03-09 07:18:43,535 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 23 states and 30 transitions. [2025-03-09 07:18:43,535 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2025-03-09 07:18:43,535 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2025-03-09 07:18:43,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 30 transitions. [2025-03-09 07:18:43,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-03-09 07:18:43,535 INFO L218 hiAutomatonCegarLoop]: Abstraction has 23 states and 30 transitions. [2025-03-09 07:18:43,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 30 transitions. [2025-03-09 07:18:43,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2025-03-09 07:18:43,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 21 states have internal predecessors, (29), 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) [2025-03-09 07:18:43,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2025-03-09 07:18:43,536 INFO L240 hiAutomatonCegarLoop]: Abstraction has 22 states and 29 transitions. [2025-03-09 07:18:43,536 INFO L432 stractBuchiCegarLoop]: Abstraction has 22 states and 29 transitions. [2025-03-09 07:18:43,536 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-03-09 07:18:43,536 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 29 transitions. [2025-03-09 07:18:43,537 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2025-03-09 07:18:43,537 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-09 07:18:43,537 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-09 07:18:43,537 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 07:18:43,537 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-03-09 07:18:43,537 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~i~0#1, main_~pvlen~0#1, main_~tmp___1~0#1, main_~k~0#1, main_~n~0#1, main_~j~0#1;havoc main_~i~0#1;havoc main_~pvlen~0#1;havoc main_~tmp___1~0#1;main_~k~0#1 := 0;havoc main_~n~0#1;main_~i~0#1 := 0;havoc main_#t~nondet1#1;main_~pvlen~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" "assume true;havoc main_#t~nondet2#1;" "assume !(0 != main_#t~nondet2#1 && main_~i~0#1 <= 1000000);havoc main_#t~nondet2#1;" "assume !(main_~i~0#1 > main_~pvlen~0#1);" "main_~i~0#1 := 0;" "assume true;havoc main_#t~nondet3#1;" "assume !(0 != main_#t~nondet3#1 && main_~i~0#1 <= 1000000);havoc main_#t~nondet3#1;" "main_~j~0#1 := 0;main_~n~0#1 := main_~i~0#1;" "assume true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 >= 0 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1;" "assume !(0 == __VERIFIER_assert_~cond#1);" [2025-03-09 07:18:43,537 INFO L754 eck$LassoCheckResult]: Loop: "havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;main_~k~0#1 := main_~k~0#1 - 1;main_~i~0#1 := main_~i~0#1 - 1;main_~j~0#1 := 1 + main_~j~0#1;" "assume !(main_~j~0#1 >= main_~n~0#1);" "assume true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 >= 0 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1;" "assume !(0 == __VERIFIER_assert_~cond#1);" [2025-03-09 07:18:43,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 07:18:43,538 INFO L85 PathProgramCache]: Analyzing trace with hash 368011604, now seen corresponding path program 1 times [2025-03-09 07:18:43,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 07:18:43,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527105015] [2025-03-09 07:18:43,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 07:18:43,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 07:18:43,541 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 07:18:43,550 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 07:18:43,551 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:18:43,551 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:18:43,551 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 07:18:43,552 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 07:18:43,555 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 07:18:43,556 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:18:43,556 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:18:43,557 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 07:18:43,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 07:18:43,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1076735, now seen corresponding path program 1 times [2025-03-09 07:18:43,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 07:18:43,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059344417] [2025-03-09 07:18:43,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 07:18:43,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 07:18:43,560 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-09 07:18:43,562 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-09 07:18:43,562 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:18:43,562 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:18:43,562 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 07:18:43,567 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-09 07:18:43,569 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-09 07:18:43,569 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:18:43,569 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:18:43,570 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 07:18:43,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 07:18:43,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1387591122, now seen corresponding path program 1 times [2025-03-09 07:18:43,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 07:18:43,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505186238] [2025-03-09 07:18:43,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 07:18:43,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 07:18:43,574 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 07:18:43,582 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 07:18:43,585 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:18:43,585 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 07:18:43,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 07:18:43,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 07:18:43,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505186238] [2025-03-09 07:18:43,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505186238] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 07:18:43,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 07:18:43,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 07:18:43,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82159782] [2025-03-09 07:18:43,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 07:18:43,741 INFO L204 LassoAnalysis]: Preferences: [2025-03-09 07:18:43,741 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-09 07:18:43,741 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-09 07:18:43,741 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-09 07:18:43,741 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-03-09 07:18:43,741 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 07:18:43,741 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-09 07:18:43,741 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-09 07:18:43,741 INFO L132 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration3_Loop [2025-03-09 07:18:43,741 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-09 07:18:43,741 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-09 07:18:43,742 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 07:18:43,748 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 07:18:43,756 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 07:18:43,759 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 07:18:43,761 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 07:18:43,814 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-09 07:18:43,814 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-03-09 07:18:43,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 07:18:43,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 07:18:43,817 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) [2025-03-09 07:18:43,818 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 [2025-03-09 07:18:43,820 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-09 07:18:43,820 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 07:18:43,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2025-03-09 07:18:43,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 07:18:43,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 07:18:43,839 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) [2025-03-09 07:18:43,841 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 [2025-03-09 07:18:43,843 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-03-09 07:18:43,843 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 07:18:43,935 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-03-09 07:18:43,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2025-03-09 07:18:43,940 INFO L204 LassoAnalysis]: Preferences: [2025-03-09 07:18:43,940 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-09 07:18:43,940 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-09 07:18:43,940 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-09 07:18:43,940 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-03-09 07:18:43,941 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 07:18:43,941 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-09 07:18:43,941 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-09 07:18:43,941 INFO L132 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration3_Loop [2025-03-09 07:18:43,941 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-09 07:18:43,941 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-09 07:18:43,944 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 07:18:43,953 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 07:18:43,955 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 07:18:43,959 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 07:18:43,962 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 07:18:43,999 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-09 07:18:43,999 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-03-09 07:18:43,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 07:18:43,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 07:18:44,003 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) [2025-03-09 07:18:44,005 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 [2025-03-09 07:18:44,006 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 [2025-03-09 07:18:44,016 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 07:18:44,017 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-03-09 07:18:44,017 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 07:18:44,017 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 07:18:44,017 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 07:18:44,018 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-03-09 07:18:44,018 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-03-09 07:18:44,020 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-03-09 07:18:44,024 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-03-09 07:18:44,024 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-03-09 07:18:44,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 07:18:44,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 07:18:44,027 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) [2025-03-09 07:18:44,028 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 [2025-03-09 07:18:44,028 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-03-09 07:18:44,028 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-03-09 07:18:44,028 INFO L474 LassoAnalysis]: Proved termination. [2025-03-09 07:18:44,028 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1, ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~j~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2025-03-09 07:18:44,034 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 [2025-03-09 07:18:44,035 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-03-09 07:18:44,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 07:18:44,049 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 07:18:44,054 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 07:18:44,054 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:18:44,054 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 07:18:44,055 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-09 07:18:44,055 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 07:18:44,067 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-09 07:18:44,069 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-09 07:18:44,069 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:18:44,069 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 07:18:44,070 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 07:18:44,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 07:18:44,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 07:18:44,099 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 [2025-03-09 07:18:44,099 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 10 Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 07:18:44,113 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 10. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 35 states and 44 transitions. Complement of second has 7 states. [2025-03-09 07:18:44,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-03-09 07:18:44,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 07:18:44,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 32 transitions. [2025-03-09 07:18:44,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 32 transitions. Stem has 11 letters. Loop has 4 letters. [2025-03-09 07:18:44,114 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 07:18:44,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 32 transitions. Stem has 15 letters. Loop has 4 letters. [2025-03-09 07:18:44,114 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 07:18:44,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 32 transitions. Stem has 11 letters. Loop has 8 letters. [2025-03-09 07:18:44,115 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 07:18:44,115 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 44 transitions. [2025-03-09 07:18:44,115 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-03-09 07:18:44,116 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 0 states and 0 transitions. [2025-03-09 07:18:44,116 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-03-09 07:18:44,116 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-03-09 07:18:44,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-03-09 07:18:44,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-03-09 07:18:44,116 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-09 07:18:44,116 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-09 07:18:44,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 07:18:44,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 07:18:44,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 07:18:44,118 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 07:18:44,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 07:18:44,119 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2025-03-09 07:18:44,120 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2025-03-09 07:18:44,120 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-03-09 07:18:44,120 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2025-03-09 07:18:44,120 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-03-09 07:18:44,120 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-03-09 07:18:44,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-03-09 07:18:44,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-03-09 07:18:44,120 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-09 07:18:44,120 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-09 07:18:44,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-09 07:18:44,121 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-09 07:18:44,121 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-03-09 07:18:44,121 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-03-09 07:18:44,121 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-03-09 07:18:44,121 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-03-09 07:18:44,129 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 09.03 07:18:44 BoogieIcfgContainer [2025-03-09 07:18:44,129 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-03-09 07:18:44,129 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-09 07:18:44,129 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-09 07:18:44,129 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-09 07:18:44,131 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 07:18:42" (3/4) ... [2025-03-09 07:18:44,132 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-09 07:18:44,133 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-09 07:18:44,134 INFO L158 Benchmark]: Toolchain (without parser) took 2119.19ms. Allocated memory is still 142.6MB. Free memory was 113.8MB in the beginning and 66.2MB in the end (delta: 47.6MB). Peak memory consumption was 47.6MB. Max. memory is 16.1GB. [2025-03-09 07:18:44,134 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 201.3MB. Free memory is still 124.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 07:18:44,134 INFO L158 Benchmark]: CACSL2BoogieTranslator took 159.51ms. Allocated memory is still 142.6MB. Free memory was 113.8MB in the beginning and 102.6MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 07:18:44,134 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.30ms. Allocated memory is still 142.6MB. Free memory was 102.6MB in the beginning and 101.7MB in the end (delta: 961.4kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 07:18:44,134 INFO L158 Benchmark]: Boogie Preprocessor took 25.98ms. Allocated memory is still 142.6MB. Free memory was 101.7MB in the beginning and 100.7MB in the end (delta: 903.4kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 07:18:44,134 INFO L158 Benchmark]: IcfgBuilder took 193.01ms. Allocated memory is still 142.6MB. Free memory was 100.3MB in the beginning and 89.7MB in the end (delta: 10.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-09 07:18:44,134 INFO L158 Benchmark]: BuchiAutomizer took 1713.06ms. Allocated memory is still 142.6MB. Free memory was 89.3MB in the beginning and 66.2MB in the end (delta: 23.1MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. [2025-03-09 07:18:44,134 INFO L158 Benchmark]: Witness Printer took 3.65ms. Allocated memory is still 142.6MB. Free memory was 66.2MB in the beginning and 66.2MB in the end (delta: 27.1kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 07:18:44,135 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 201.3MB. Free memory is still 124.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 159.51ms. Allocated memory is still 142.6MB. Free memory was 113.8MB in the beginning and 102.6MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.30ms. Allocated memory is still 142.6MB. Free memory was 102.6MB in the beginning and 101.7MB in the end (delta: 961.4kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.98ms. Allocated memory is still 142.6MB. Free memory was 101.7MB in the beginning and 100.7MB in the end (delta: 903.4kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 193.01ms. Allocated memory is still 142.6MB. Free memory was 100.3MB in the beginning and 89.7MB in the end (delta: 10.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * BuchiAutomizer took 1713.06ms. Allocated memory is still 142.6MB. Free memory was 89.3MB in the beginning and 66.2MB in the end (delta: 23.1MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. * Witness Printer took 3.65ms. Allocated memory is still 142.6MB. Free memory was 66.2MB in the beginning and 66.2MB in the end (delta: 27.1kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function (((long long) -2 * i) + 2000001) and consists of 4 locations. One deterministic module has affine ranking function (((long long) -2 * i) + 2000001) and consists of 4 locations. One deterministic module has affine ranking function (((long long) -1 * j) + n) and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.6s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 37 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 48 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20 IncrementalHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 34 mSDtfsCounter, 20 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf100 lsp71 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq156 hnf93 smp100 dnf100 smp100 tf112 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 41ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-03-09 07:18:44,146 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 [2025-03-09 07:18:44,349 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 [2025-03-09 07:18:44,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE