./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/termination.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/fragtest_simple.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/ultimate/releaseScripts/default/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 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-15 00:42:13,779 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 00:42:13,845 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-10-15 00:42:13,850 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 00:42:13,851 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 00:42:13,873 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 00:42:13,874 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 00:42:13,874 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 00:42:13,875 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 00:42:13,876 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 00:42:13,877 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 00:42:13,877 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 00:42:13,877 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 00:42:13,878 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-15 00:42:13,878 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-15 00:42:13,881 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-15 00:42:13,881 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-15 00:42:13,881 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-15 00:42:13,881 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-15 00:42:13,881 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 00:42:13,882 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-15 00:42:13,882 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 00:42:13,883 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 00:42:13,883 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 00:42:13,883 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 00:42:13,883 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-15 00:42:13,883 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-15 00:42:13,883 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-15 00:42:13,884 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 00:42:13,884 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-15 00:42:13,884 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 00:42:13,884 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 00:42:13,885 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-15 00:42:13,885 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 00:42:13,885 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 00:42:13,885 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 00:42:13,886 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 00:42:13,886 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 00:42:13,886 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-15 00:42:13,886 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be3b53cc5f9badbf5402cafcfa5766831674eb009261bc7c1bcbe9580aece38e [2024-10-15 00:42:14,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 00:42:14,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 00:42:14,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 00:42:14,125 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 00:42:14,125 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 00:42:14,126 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/fragtest_simple.i [2024-10-15 00:42:15,355 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 00:42:15,509 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 00:42:15,509 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/fragtest_simple.i [2024-10-15 00:42:15,515 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc46d631f/905c047af6b44d40bdc7c65b9b00416f/FLAG7a04fc1a4 [2024-10-15 00:42:15,922 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc46d631f/905c047af6b44d40bdc7c65b9b00416f [2024-10-15 00:42:15,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 00:42:15,926 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 00:42:15,927 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 00:42:15,927 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 00:42:15,931 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 00:42:15,932 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:42:15" (1/1) ... [2024-10-15 00:42:15,932 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5550a781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:42:15, skipping insertion in model container [2024-10-15 00:42:15,932 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:42:15" (1/1) ... [2024-10-15 00:42:15,947 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 00:42:16,062 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:42:16,073 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 00:42:16,088 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:42:16,105 INFO L204 MainTranslator]: Completed translation [2024-10-15 00:42:16,106 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:42:16 WrapperNode [2024-10-15 00:42:16,106 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 00:42:16,107 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 00:42:16,107 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 00:42:16,107 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 00:42:16,112 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:42:16" (1/1) ... [2024-10-15 00:42:16,122 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:42:16" (1/1) ... [2024-10-15 00:42:16,134 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 60 [2024-10-15 00:42:16,135 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 00:42:16,135 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 00:42:16,135 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 00:42:16,136 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 00:42:16,143 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:42:16" (1/1) ... [2024-10-15 00:42:16,144 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:42:16" (1/1) ... [2024-10-15 00:42:16,144 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:42:16" (1/1) ... [2024-10-15 00:42:16,153 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]. [2024-10-15 00:42:16,154 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:42:16" (1/1) ... [2024-10-15 00:42:16,154 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:42:16" (1/1) ... [2024-10-15 00:42:16,156 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:42:16" (1/1) ... [2024-10-15 00:42:16,158 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:42:16" (1/1) ... [2024-10-15 00:42:16,159 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:42:16" (1/1) ... [2024-10-15 00:42:16,159 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:42:16" (1/1) ... [2024-10-15 00:42:16,161 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 00:42:16,161 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 00:42:16,161 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 00:42:16,161 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 00:42:16,162 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:42:16" (1/1) ... [2024-10-15 00:42:16,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:42:16,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:42:16,187 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-15 00:42:16,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-10-15 00:42:16,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 00:42:16,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 00:42:16,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 00:42:16,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 00:42:16,285 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 00:42:16,287 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 00:42:16,412 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-10-15 00:42:16,412 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 00:42:16,425 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 00:42:16,426 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-15 00:42:16,426 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:42:16 BoogieIcfgContainer [2024-10-15 00:42:16,426 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 00:42:16,427 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-15 00:42:16,427 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-15 00:42:16,430 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-15 00:42:16,430 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-15 00:42:16,430 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.10 12:42:15" (1/3) ... [2024-10-15 00:42:16,431 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@389d96fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.10 12:42:16, skipping insertion in model container [2024-10-15 00:42:16,431 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-15 00:42:16,431 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:42:16" (2/3) ... [2024-10-15 00:42:16,431 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@389d96fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.10 12:42:16, skipping insertion in model container [2024-10-15 00:42:16,432 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-15 00:42:16,432 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:42:16" (3/3) ... [2024-10-15 00:42:16,432 INFO L332 chiAutomizerObserver]: Analyzing ICFG fragtest_simple.i [2024-10-15 00:42:16,474 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-15 00:42:16,474 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-15 00:42:16,474 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-15 00:42:16,474 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-15 00:42:16,474 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-15 00:42:16,474 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-15 00:42:16,474 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-15 00:42:16,475 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-15 00:42:16,478 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 20 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 19 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) [2024-10-15 00:42:16,491 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 11 [2024-10-15 00:42:16,491 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-15 00:42:16,491 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-15 00:42:16,495 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-15 00:42:16,495 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-10-15 00:42:16,495 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-15 00:42:16,495 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 20 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 19 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) [2024-10-15 00:42:16,496 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 11 [2024-10-15 00:42:16,496 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-15 00:42:16,496 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-15 00:42:16,496 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-15 00:42:16,497 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-10-15 00:42:16,502 INFO L745 eck$LassoCheckResult]: Stem: 15#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~i~0#1, main_~pvlen~0#1, main_~tmp___1~0#1, main_~k~0#1, main_~n~0#1, main_~j~0#1;havoc main_~i~0#1;havoc main_~pvlen~0#1;havoc main_~tmp___1~0#1;main_~k~0#1 := 0;havoc main_~n~0#1;main_~i~0#1 := 0;havoc main_#t~nondet1#1;main_~pvlen~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 9#L31-3true [2024-10-15 00:42:16,503 INFO L747 eck$LassoCheckResult]: Loop: 9#L31-3true havoc main_#t~nondet2#1; 17#L31-1true 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; 9#L31-3true [2024-10-15 00:42:16,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:42:16,507 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-10-15 00:42:16,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:42:16,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095235892] [2024-10-15 00:42:16,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:42:16,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:42:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:42:16,578 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-15 00:42:16,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:42:16,599 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-15 00:42:16,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:42:16,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1190, now seen corresponding path program 1 times [2024-10-15 00:42:16,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:42:16,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207614051] [2024-10-15 00:42:16,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:42:16,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:42:16,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:42:16,616 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-15 00:42:16,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:42:16,620 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-15 00:42:16,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:42:16,621 INFO L85 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2024-10-15 00:42:16,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:42:16,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876838088] [2024-10-15 00:42:16,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:42:16,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:42:16,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:42:16,633 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-15 00:42:16,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:42:16,639 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-15 00:42:16,705 INFO L204 LassoAnalysis]: Preferences: [2024-10-15 00:42:16,705 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-15 00:42:16,705 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-15 00:42:16,706 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-15 00:42:16,706 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-15 00:42:16,706 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:42:16,706 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-15 00:42:16,706 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-15 00:42:16,706 INFO L132 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration1_Loop [2024-10-15 00:42:16,706 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-15 00:42:16,706 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-15 00:42:16,718 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:42:16,737 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:42:16,768 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-15 00:42:16,769 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-15 00:42:16,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:42:16,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:42:16,775 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) [2024-10-15 00:42:16,776 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 [2024-10-15 00:42:16,777 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-15 00:42:16,777 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:42:16,801 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 [2024-10-15 00:42:16,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:42:16,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:42:16,803 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) [2024-10-15 00:42:16,804 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 [2024-10-15 00:42:16,804 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-15 00:42:16,804 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:42:16,837 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-15 00:42:16,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2024-10-15 00:42:16,844 INFO L204 LassoAnalysis]: Preferences: [2024-10-15 00:42:16,844 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-15 00:42:16,844 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-15 00:42:16,844 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-15 00:42:16,844 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-15 00:42:16,844 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:42:16,844 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-15 00:42:16,844 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-15 00:42:16,844 INFO L132 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration1_Loop [2024-10-15 00:42:16,844 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-15 00:42:16,845 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-15 00:42:16,845 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:42:16,857 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:42:16,879 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-15 00:42:16,883 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-15 00:42:16,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:42:16,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:42:16,886 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) [2024-10-15 00:42:16,886 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 [2024-10-15 00:42:16,888 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 [2024-10-15 00:42:16,898 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-15 00:42:16,899 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-15 00:42:16,899 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-15 00:42:16,899 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-15 00:42:16,899 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-15 00:42:16,901 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-15 00:42:16,901 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-15 00:42:16,903 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-15 00:42:16,915 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-15 00:42:16,915 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-15 00:42:16,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:42:16,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:42:16,936 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) [2024-10-15 00:42:16,938 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 [2024-10-15 00:42:16,939 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-15 00:42:16,939 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-15 00:42:16,940 INFO L474 LassoAnalysis]: Proved termination. [2024-10-15 00:42:16,941 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 [] [2024-10-15 00:42:16,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2024-10-15 00:42:16,957 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-15 00:42:16,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:42:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:42:17,016 INFO L255 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-15 00:42:17,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:42:17,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:42:17,031 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-15 00:42:17,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:42:17,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:42:17,065 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 [2024-10-15 00:42:17,067 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 20 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 19 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) 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) [2024-10-15 00:42:17,107 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 20 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 19 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). 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 57 transitions. Complement of second has 6 states. [2024-10-15 00:42:17,109 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 [2024-10-15 00:42:17,115 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) [2024-10-15 00:42:17,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 29 transitions. [2024-10-15 00:42:17,117 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 2 letters. Loop has 2 letters. [2024-10-15 00:42:17,118 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-15 00:42:17,121 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 4 letters. Loop has 2 letters. [2024-10-15 00:42:17,121 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-15 00:42:17,121 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 2 letters. Loop has 4 letters. [2024-10-15 00:42:17,121 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-15 00:42:17,122 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 57 transitions. [2024-10-15 00:42:17,124 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2024-10-15 00:42:17,126 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 18 states and 25 transitions. [2024-10-15 00:42:17,127 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2024-10-15 00:42:17,127 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2024-10-15 00:42:17,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 25 transitions. [2024-10-15 00:42:17,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-15 00:42:17,128 INFO L218 hiAutomatonCegarLoop]: Abstraction has 18 states and 25 transitions. [2024-10-15 00:42:17,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 25 transitions. [2024-10-15 00:42:17,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-10-15 00:42:17,149 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) [2024-10-15 00:42:17,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2024-10-15 00:42:17,151 INFO L240 hiAutomatonCegarLoop]: Abstraction has 18 states and 25 transitions. [2024-10-15 00:42:17,151 INFO L425 stractBuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2024-10-15 00:42:17,151 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-10-15 00:42:17,151 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 25 transitions. [2024-10-15 00:42:17,153 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2024-10-15 00:42:17,153 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-15 00:42:17,153 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-15 00:42:17,154 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2024-10-15 00:42:17,154 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-10-15 00:42:17,154 INFO L745 eck$LassoCheckResult]: Stem: 109#$Ultimate##0 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); 100#L-1 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; 101#L31-3 havoc main_#t~nondet2#1; 104#L31-1 assume !(0 != main_#t~nondet2#1 && main_~i~0#1 <= 1000000);havoc main_#t~nondet2#1; 110#L31-4 assume !(main_~i~0#1 > main_~pvlen~0#1); 108#L34-1 main_~i~0#1 := 0; 97#L38-3 [2024-10-15 00:42:17,154 INFO L747 eck$LassoCheckResult]: Loop: 97#L38-3 havoc main_#t~nondet3#1; 96#L38-1 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; 97#L38-3 [2024-10-15 00:42:17,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:42:17,156 INFO L85 PathProgramCache]: Analyzing trace with hash 889569512, now seen corresponding path program 1 times [2024-10-15 00:42:17,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:42:17,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994500020] [2024-10-15 00:42:17,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:42:17,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:42:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:42:17,167 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-15 00:42:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:42:17,175 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-15 00:42:17,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:42:17,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1830, now seen corresponding path program 1 times [2024-10-15 00:42:17,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:42:17,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354309867] [2024-10-15 00:42:17,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:42:17,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:42:17,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:42:17,187 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-15 00:42:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:42:17,192 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-15 00:42:17,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:42:17,193 INFO L85 PathProgramCache]: Analyzing trace with hash 177809997, now seen corresponding path program 1 times [2024-10-15 00:42:17,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:42:17,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303162441] [2024-10-15 00:42:17,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:42:17,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:42:17,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:42:17,207 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-15 00:42:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:42:17,221 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-15 00:42:17,251 INFO L204 LassoAnalysis]: Preferences: [2024-10-15 00:42:17,252 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-15 00:42:17,252 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-15 00:42:17,252 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-15 00:42:17,252 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-15 00:42:17,252 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:42:17,252 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-15 00:42:17,252 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-15 00:42:17,252 INFO L132 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration2_Loop [2024-10-15 00:42:17,252 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-15 00:42:17,252 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-15 00:42:17,253 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:42:17,256 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:42:17,261 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:42:17,292 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-15 00:42:17,292 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-15 00:42:17,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:42:17,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:42:17,294 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) [2024-10-15 00:42:17,296 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 [2024-10-15 00:42:17,297 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-15 00:42:17,297 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:42:17,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2024-10-15 00:42:17,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:42:17,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:42:17,325 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) [2024-10-15 00:42:17,326 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 [2024-10-15 00:42:17,328 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-15 00:42:17,328 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:42:17,356 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-15 00:42:17,357 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=-2}, {ULTIMATE.start_main_~k~0#1=4}, {ULTIMATE.start_main_~k~0#1=-1}] Lambdas: [3, 1, 1] Nus: [1, 0] [2024-10-15 00:42:17,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2024-10-15 00:42:17,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:42:17,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:42:17,370 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) [2024-10-15 00:42:17,371 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 [2024-10-15 00:42:17,372 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-15 00:42:17,373 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:42:17,396 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 [2024-10-15 00:42:17,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:42:17,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:42:17,398 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) [2024-10-15 00:42:17,400 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 [2024-10-15 00:42:17,400 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-15 00:42:17,400 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:42:17,429 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-15 00:42:17,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2024-10-15 00:42:17,434 INFO L204 LassoAnalysis]: Preferences: [2024-10-15 00:42:17,434 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-15 00:42:17,434 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-15 00:42:17,434 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-15 00:42:17,434 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-15 00:42:17,434 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:42:17,434 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-15 00:42:17,434 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-15 00:42:17,434 INFO L132 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration2_Loop [2024-10-15 00:42:17,435 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-15 00:42:17,435 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-15 00:42:17,436 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:42:17,442 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:42:17,449 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:42:17,479 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-15 00:42:17,480 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-15 00:42:17,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:42:17,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:42:17,481 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) [2024-10-15 00:42:17,483 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 [2024-10-15 00:42:17,484 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-15 00:42:17,495 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-15 00:42:17,495 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-15 00:42:17,495 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-15 00:42:17,495 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-15 00:42:17,495 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-15 00:42:17,497 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-15 00:42:17,498 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-15 00:42:17,502 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-15 00:42:17,513 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2024-10-15 00:42:17,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:42:17,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:42:17,515 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) [2024-10-15 00:42:17,517 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 [2024-10-15 00:42:17,518 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 [2024-10-15 00:42:17,528 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-15 00:42:17,529 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-15 00:42:17,529 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-15 00:42:17,529 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-15 00:42:17,529 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-15 00:42:17,530 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-15 00:42:17,530 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-15 00:42:17,533 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-15 00:42:17,535 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-15 00:42:17,535 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-15 00:42:17,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:42:17,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:42:17,537 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) [2024-10-15 00:42:17,540 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 [2024-10-15 00:42:17,540 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-15 00:42:17,540 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-15 00:42:17,540 INFO L474 LassoAnalysis]: Proved termination. [2024-10-15 00:42:17,540 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 [] [2024-10-15 00:42:17,551 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 [2024-10-15 00:42:17,552 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-15 00:42:17,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:42:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:42:17,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-15 00:42:17,572 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:42:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:42:17,586 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-15 00:42:17,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:42:17,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:42:17,590 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 [2024-10-15 00:42:17,590 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) [2024-10-15 00:42:17,607 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. [2024-10-15 00:42:17,609 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 [2024-10-15 00:42:17,610 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) [2024-10-15 00:42:17,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 29 transitions. [2024-10-15 00:42:17,610 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 6 letters. Loop has 2 letters. [2024-10-15 00:42:17,611 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-15 00:42:17,611 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 8 letters. Loop has 2 letters. [2024-10-15 00:42:17,611 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-15 00:42:17,611 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 6 letters. Loop has 4 letters. [2024-10-15 00:42:17,611 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-15 00:42:17,611 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 52 transitions. [2024-10-15 00:42:17,613 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2024-10-15 00:42:17,615 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 23 states and 30 transitions. [2024-10-15 00:42:17,615 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2024-10-15 00:42:17,615 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2024-10-15 00:42:17,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 30 transitions. [2024-10-15 00:42:17,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-15 00:42:17,616 INFO L218 hiAutomatonCegarLoop]: Abstraction has 23 states and 30 transitions. [2024-10-15 00:42:17,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 30 transitions. [2024-10-15 00:42:17,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2024-10-15 00:42:17,617 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) [2024-10-15 00:42:17,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2024-10-15 00:42:17,618 INFO L240 hiAutomatonCegarLoop]: Abstraction has 22 states and 29 transitions. [2024-10-15 00:42:17,618 INFO L425 stractBuchiCegarLoop]: Abstraction has 22 states and 29 transitions. [2024-10-15 00:42:17,618 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-10-15 00:42:17,618 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 29 transitions. [2024-10-15 00:42:17,620 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2024-10-15 00:42:17,620 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-15 00:42:17,620 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-15 00:42:17,620 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:42:17,620 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-15 00:42:17,621 INFO L745 eck$LassoCheckResult]: Stem: 212#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 203#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~i~0#1, main_~pvlen~0#1, main_~tmp___1~0#1, main_~k~0#1, main_~n~0#1, main_~j~0#1;havoc main_~i~0#1;havoc main_~pvlen~0#1;havoc main_~tmp___1~0#1;main_~k~0#1 := 0;havoc main_~n~0#1;main_~i~0#1 := 0;havoc main_#t~nondet1#1;main_~pvlen~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 204#L31-3 havoc main_#t~nondet2#1; 208#L31-1 assume !(0 != main_#t~nondet2#1 && main_~i~0#1 <= 1000000);havoc main_#t~nondet2#1; 213#L31-4 assume !(main_~i~0#1 > main_~pvlen~0#1); 211#L34-1 main_~i~0#1 := 0; 201#L38-3 havoc main_#t~nondet3#1; 197#L38-1 assume !(0 != main_#t~nondet3#1 && main_~i~0#1 <= 1000000);havoc main_#t~nondet3#1; 198#L38-4 main_~j~0#1 := 0;main_~n~0#1 := main_~i~0#1; 202#L45-2 assume !false;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 >= 0 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 210#L18 assume !(0 == __VERIFIER_assert_~cond#1); 196#L18-2 [2024-10-15 00:42:17,621 INFO L747 eck$LassoCheckResult]: Loop: 196#L18-2 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; 205#L50 assume !(main_~j~0#1 >= main_~n~0#1); 206#L45-2 assume !false;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; 216#L18 assume !(0 == __VERIFIER_assert_~cond#1); 196#L18-2 [2024-10-15 00:42:17,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:42:17,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1442921127, now seen corresponding path program 1 times [2024-10-15 00:42:17,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:42:17,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225312615] [2024-10-15 00:42:17,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:42:17,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:42:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:42:17,632 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-15 00:42:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:42:17,641 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-15 00:42:17,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:42:17,642 INFO L85 PathProgramCache]: Analyzing trace with hash 2836404, now seen corresponding path program 1 times [2024-10-15 00:42:17,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:42:17,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528016539] [2024-10-15 00:42:17,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:42:17,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:42:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:42:17,647 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-15 00:42:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:42:17,651 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-15 00:42:17,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:42:17,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1474117798, now seen corresponding path program 1 times [2024-10-15 00:42:17,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:42:17,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876976958] [2024-10-15 00:42:17,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:42:17,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:42:17,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:42:17,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:42:17,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:42:17,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876976958] [2024-10-15 00:42:17,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876976958] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:42:17,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:42:17,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 00:42:17,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327879039] [2024-10-15 00:42:17,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:42:17,841 INFO L204 LassoAnalysis]: Preferences: [2024-10-15 00:42:17,841 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-15 00:42:17,841 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-15 00:42:17,841 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-15 00:42:17,841 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-15 00:42:17,841 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:42:17,841 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-15 00:42:17,841 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-15 00:42:17,841 INFO L132 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration3_Loop [2024-10-15 00:42:17,841 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-15 00:42:17,842 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-15 00:42:17,842 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:42:17,867 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:42:17,874 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:42:17,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2024-10-15 00:42:17,883 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:42:17,885 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:42:17,902 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 [2024-10-15 00:42:17,930 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-15 00:42:17,930 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-15 00:42:17,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:42:17,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:42:17,932 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) [2024-10-15 00:42:17,933 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-15 00:42:17,933 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:42:17,933 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 [2024-10-15 00:42:17,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2024-10-15 00:42:17,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:42:17,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:42:17,957 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) [2024-10-15 00:42:17,957 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 [2024-10-15 00:42:17,958 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-15 00:42:17,958 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:42:18,192 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-15 00:42:18,197 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 [2024-10-15 00:42:18,197 INFO L204 LassoAnalysis]: Preferences: [2024-10-15 00:42:18,197 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-15 00:42:18,197 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-15 00:42:18,197 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-15 00:42:18,197 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-15 00:42:18,197 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:42:18,197 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-15 00:42:18,197 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-15 00:42:18,197 INFO L132 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration3_Loop [2024-10-15 00:42:18,197 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-15 00:42:18,197 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-15 00:42:18,198 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:42:18,205 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:42:18,208 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:42:18,212 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:42:18,214 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:42:18,252 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-15 00:42:18,252 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-15 00:42:18,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:42:18,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:42:18,256 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) [2024-10-15 00:42:18,257 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 [2024-10-15 00:42:18,258 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 [2024-10-15 00:42:18,268 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-15 00:42:18,268 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-15 00:42:18,268 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-15 00:42:18,268 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-15 00:42:18,268 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-15 00:42:18,269 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-15 00:42:18,269 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-15 00:42:18,271 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-15 00:42:18,274 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2024-10-15 00:42:18,274 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-10-15 00:42:18,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:42:18,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:42:18,275 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) [2024-10-15 00:42:18,276 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 [2024-10-15 00:42:18,277 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-15 00:42:18,277 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-15 00:42:18,277 INFO L474 LassoAnalysis]: Proved termination. [2024-10-15 00:42:18,277 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 [] [2024-10-15 00:42:18,288 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2024-10-15 00:42:18,290 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-15 00:42:18,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:42:18,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:42:18,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-15 00:42:18,312 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:42:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:42:18,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-15 00:42:18,329 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:42:18,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:42:18,354 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 [2024-10-15 00:42:18,354 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) [2024-10-15 00:42:18,369 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. [2024-10-15 00:42:18,371 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 [2024-10-15 00:42:18,371 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) [2024-10-15 00:42:18,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 32 transitions. [2024-10-15 00:42:18,372 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 32 transitions. Stem has 11 letters. Loop has 4 letters. [2024-10-15 00:42:18,372 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-15 00:42:18,372 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 32 transitions. Stem has 15 letters. Loop has 4 letters. [2024-10-15 00:42:18,372 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-15 00:42:18,372 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 32 transitions. Stem has 11 letters. Loop has 8 letters. [2024-10-15 00:42:18,372 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-15 00:42:18,372 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 44 transitions. [2024-10-15 00:42:18,373 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-15 00:42:18,373 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 0 states and 0 transitions. [2024-10-15 00:42:18,373 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-10-15 00:42:18,373 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-10-15 00:42:18,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-10-15 00:42:18,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-15 00:42:18,373 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-15 00:42:18,373 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-15 00:42:18,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:42:18,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 00:42:18,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-15 00:42:18,376 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) [2024-10-15 00:42:18,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 00:42:18,378 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2024-10-15 00:42:18,378 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2024-10-15 00:42:18,378 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-15 00:42:18,378 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2024-10-15 00:42:18,378 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-10-15 00:42:18,378 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-10-15 00:42:18,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-10-15 00:42:18,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-15 00:42:18,378 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-15 00:42:18,378 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-15 00:42:18,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-15 00:42:18,379 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-15 00:42:18,379 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-10-15 00:42:18,379 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-10-15 00:42:18,379 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-15 00:42:18,379 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-10-15 00:42:18,385 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.10 12:42:18 BoogieIcfgContainer [2024-10-15 00:42:18,386 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-10-15 00:42:18,386 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-15 00:42:18,386 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-15 00:42:18,387 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-15 00:42:18,387 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:42:16" (3/4) ... [2024-10-15 00:42:18,388 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-15 00:42:18,389 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-15 00:42:18,389 INFO L158 Benchmark]: Toolchain (without parser) took 2463.57ms. Allocated memory is still 174.1MB. Free memory was 105.6MB in the beginning and 117.0MB in the end (delta: -11.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 00:42:18,390 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 113.2MB. Free memory was 76.5MB in the beginning and 76.5MB in the end (delta: 21.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 00:42:18,391 INFO L158 Benchmark]: CACSL2BoogieTranslator took 179.19ms. Allocated memory is still 174.1MB. Free memory was 104.9MB in the beginning and 93.7MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-15 00:42:18,391 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.20ms. Allocated memory is still 174.1MB. Free memory was 93.7MB in the beginning and 92.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 00:42:18,391 INFO L158 Benchmark]: Boogie Preprocessor took 25.37ms. Allocated memory is still 174.1MB. Free memory was 92.3MB in the beginning and 90.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 00:42:18,391 INFO L158 Benchmark]: RCFGBuilder took 264.92ms. Allocated memory is still 174.1MB. Free memory was 90.2MB in the beginning and 142.3MB in the end (delta: -52.1MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. [2024-10-15 00:42:18,392 INFO L158 Benchmark]: BuchiAutomizer took 1958.81ms. Allocated memory is still 174.1MB. Free memory was 142.3MB in the beginning and 118.1MB in the end (delta: 24.3MB). Peak memory consumption was 26.3MB. Max. memory is 16.1GB. [2024-10-15 00:42:18,392 INFO L158 Benchmark]: Witness Printer took 3.00ms. Allocated memory is still 174.1MB. Free memory was 118.1MB in the beginning and 117.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 00:42:18,393 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 113.2MB. Free memory was 76.5MB in the beginning and 76.5MB in the end (delta: 21.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 179.19ms. Allocated memory is still 174.1MB. Free memory was 104.9MB in the beginning and 93.7MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.20ms. Allocated memory is still 174.1MB. Free memory was 93.7MB in the beginning and 92.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.37ms. Allocated memory is still 174.1MB. Free memory was 92.3MB in the beginning and 90.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 264.92ms. Allocated memory is still 174.1MB. Free memory was 90.2MB in the beginning and 142.3MB in the end (delta: -52.1MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 1958.81ms. Allocated memory is still 174.1MB. Free memory was 142.3MB in the beginning and 118.1MB in the end (delta: 24.3MB). Peak memory consumption was 26.3MB. Max. memory is 16.1GB. * Witness Printer took 3.00ms. Allocated memory is still 174.1MB. Free memory was 118.1MB in the beginning and 117.0MB in the end (delta: 1.0MB). 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 1.9s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.5s. 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: 56ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-10-15 00:42:18,409 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 [2024-10-15 00:42:18,615 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