./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/termination.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/McCarthy91-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/McCarthy91-2.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 2a5dd5c1c64cd1875ba800cc2db6d1da955f2d2f519c1964ff87558bc42b9b4c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-12 00:59:18,337 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 00:59:18,416 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-10-12 00:59:18,423 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 00:59:18,424 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 00:59:18,481 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 00:59:18,482 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 00:59:18,482 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 00:59:18,482 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 00:59:18,483 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 00:59:18,485 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 00:59:18,486 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 00:59:18,486 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 00:59:18,488 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-12 00:59:18,488 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-12 00:59:18,488 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-12 00:59:18,489 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-12 00:59:18,489 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-12 00:59:18,493 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-12 00:59:18,493 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 00:59:18,494 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-12 00:59:18,494 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 00:59:18,494 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 00:59:18,494 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 00:59:18,495 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 00:59:18,495 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-12 00:59:18,495 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-12 00:59:18,495 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-12 00:59:18,495 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 00:59:18,495 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 00:59:18,496 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 00:59:18,496 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 00:59:18,496 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-12 00:59:18,496 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 00:59:18,496 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 00:59:18,497 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 00:59:18,497 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 00:59:18,497 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 00:59:18,499 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-12 00:59:18,506 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a5dd5c1c64cd1875ba800cc2db6d1da955f2d2f519c1964ff87558bc42b9b4c [2024-10-12 00:59:18,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 00:59:18,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 00:59:18,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 00:59:18,794 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 00:59:18,795 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 00:59:18,796 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/McCarthy91-2.c [2024-10-12 00:59:20,302 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 00:59:20,484 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 00:59:20,485 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/McCarthy91-2.c [2024-10-12 00:59:20,491 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/4567aa902/3666f05a582d4e74ac6e2d099b926840/FLAGd0a9a8a86 [2024-10-12 00:59:20,866 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/4567aa902/3666f05a582d4e74ac6e2d099b926840 [2024-10-12 00:59:20,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 00:59:20,870 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 00:59:20,874 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 00:59:20,874 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 00:59:20,880 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 00:59:20,881 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:59:20" (1/1) ... [2024-10-12 00:59:20,882 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ce405ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:59:20, skipping insertion in model container [2024-10-12 00:59:20,884 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:59:20" (1/1) ... [2024-10-12 00:59:20,903 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 00:59:21,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:59:21,100 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 00:59:21,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:59:21,135 INFO L204 MainTranslator]: Completed translation [2024-10-12 00:59:21,136 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:59:21 WrapperNode [2024-10-12 00:59:21,136 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 00:59:21,137 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 00:59:21,137 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 00:59:21,138 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 00:59:21,145 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:59:21" (1/1) ... [2024-10-12 00:59:21,152 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:59:21" (1/1) ... [2024-10-12 00:59:21,168 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 22 [2024-10-12 00:59:21,169 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 00:59:21,170 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 00:59:21,170 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 00:59:21,170 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 00:59:21,180 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:59:21" (1/1) ... [2024-10-12 00:59:21,180 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:59:21" (1/1) ... [2024-10-12 00:59:21,181 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:59:21" (1/1) ... [2024-10-12 00:59:21,192 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]. [2024-10-12 00:59:21,192 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:59:21" (1/1) ... [2024-10-12 00:59:21,192 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:59:21" (1/1) ... [2024-10-12 00:59:21,195 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:59:21" (1/1) ... [2024-10-12 00:59:21,200 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:59:21" (1/1) ... [2024-10-12 00:59:21,201 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:59:21" (1/1) ... [2024-10-12 00:59:21,203 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:59:21" (1/1) ... [2024-10-12 00:59:21,204 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 00:59:21,205 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 00:59:21,205 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 00:59:21,205 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 00:59:21,206 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:59:21" (1/1) ... [2024-10-12 00:59:21,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:21,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:21,251 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:21,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-10-12 00:59:21,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 00:59:21,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 00:59:21,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 00:59:21,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 00:59:21,321 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2024-10-12 00:59:21,321 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2024-10-12 00:59:21,374 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 00:59:21,376 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 00:59:21,472 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-10-12 00:59:21,472 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 00:59:21,488 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 00:59:21,492 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-12 00:59:21,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:59:21 BoogieIcfgContainer [2024-10-12 00:59:21,493 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 00:59:21,494 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-12 00:59:21,494 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-12 00:59:21,502 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-12 00:59:21,503 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-12 00:59:21,503 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 12.10 12:59:20" (1/3) ... [2024-10-12 00:59:21,504 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@41b13ab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 12:59:21, skipping insertion in model container [2024-10-12 00:59:21,507 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-12 00:59:21,507 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:59:21" (2/3) ... [2024-10-12 00:59:21,508 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@41b13ab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 12:59:21, skipping insertion in model container [2024-10-12 00:59:21,508 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-12 00:59:21,508 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:59:21" (3/3) ... [2024-10-12 00:59:21,509 INFO L332 chiAutomizerObserver]: Analyzing ICFG McCarthy91-2.c [2024-10-12 00:59:21,573 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-12 00:59:21,573 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-12 00:59:21,573 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-12 00:59:21,573 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-12 00:59:21,574 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-12 00:59:21,574 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-12 00:59:21,575 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-12 00:59:21,575 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-12 00:59:21,581 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-12 00:59:21,603 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-12 00:59:21,603 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:59:21,604 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:59:21,610 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-10-12 00:59:21,610 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-12 00:59:21,610 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-12 00:59:21,611 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-12 00:59:21,613 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-12 00:59:21,614 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:59:21,614 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:59:21,614 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-10-12 00:59:21,614 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-12 00:59:21,623 INFO L745 eck$LassoCheckResult]: Stem: 15#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 14#L28true call main_#t~ret7#1 := f91(main_~x~0#1);< 12#$Ultimate##0true [2024-10-12 00:59:21,625 INFO L747 eck$LassoCheckResult]: Loop: 12#$Ultimate##0true ~x := #in~x; 8#L18true assume !(~x > 100); 10#L21true call #t~ret4 := f91(11 + ~x);< 12#$Ultimate##0true [2024-10-12 00:59:21,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:21,634 INFO L85 PathProgramCache]: Analyzing trace with hash 29879, now seen corresponding path program 1 times [2024-10-12 00:59:21,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:59:21,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970845371] [2024-10-12 00:59:21,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:59:21,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:59:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:59:21,746 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:59:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:59:21,776 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:59:21,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:21,780 INFO L85 PathProgramCache]: Analyzing trace with hash 46807, now seen corresponding path program 1 times [2024-10-12 00:59:21,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:59:21,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908166558] [2024-10-12 00:59:21,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:59:21,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:59:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:59:21,795 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:59:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:59:21,803 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:59:21,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:21,806 INFO L85 PathProgramCache]: Analyzing trace with hash 890142305, now seen corresponding path program 1 times [2024-10-12 00:59:21,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:59:21,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349850677] [2024-10-12 00:59:21,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:59:21,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:59:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:59:21,823 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:59:21,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:59:21,837 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:59:21,954 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:59:21,955 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:59:21,955 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:59:21,955 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:59:21,956 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-12 00:59:21,956 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:21,956 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:59:21,956 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:59:21,956 INFO L132 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration1_Loop [2024-10-12 00:59:21,956 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:59:21,957 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:59:21,972 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:21,984 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:21,999 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:22,004 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:22,009 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:22,060 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:59:22,061 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-12 00:59:22,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:22,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:22,066 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:22,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-10-12 00:59:22,069 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:59:22,069 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:59:22,092 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:59:22,093 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:59:22,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2024-10-12 00:59:22,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:22,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:22,108 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:22,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-10-12 00:59:22,111 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:59:22,111 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:59:22,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2024-10-12 00:59:22,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:22,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:22,142 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:22,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-10-12 00:59:22,147 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 00:59:22,147 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:59:22,528 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-12 00:59:22,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-10-12 00:59:22,534 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:59:22,534 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:59:22,534 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:59:22,534 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:59:22,534 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-12 00:59:22,534 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:22,534 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:59:22,534 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:59:22,535 INFO L132 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration1_Loop [2024-10-12 00:59:22,535 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:59:22,535 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:59:22,536 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:22,541 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:22,555 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:22,559 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:22,564 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:22,608 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:59:22,613 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-12 00:59:22,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:22,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:22,616 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:22,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-10-12 00:59:22,619 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 [2024-10-12 00:59:22,633 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:59:22,633 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:59:22,634 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:59:22,634 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:59:22,634 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:59:22,637 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:59:22,637 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:59:22,644 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:59:22,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-10-12 00:59:22,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:22,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:22,665 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:22,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-10-12 00:59:22,670 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 [2024-10-12 00:59:22,682 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:59:22,683 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:59:22,683 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:59:22,683 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:59:22,684 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:59:22,686 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:59:22,687 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:59:22,693 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-12 00:59:22,698 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-12 00:59:22,698 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-12 00:59:22,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:22,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:22,724 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:22,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-10-12 00:59:22,728 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-12 00:59:22,728 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-12 00:59:22,728 INFO L474 LassoAnalysis]: Proved termination. [2024-10-12 00:59:22,729 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -2*f91_#in~x + 211 Supporting invariants [] [2024-10-12 00:59:22,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:22,743 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-12 00:59:22,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:22,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:59:22,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:22,839 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 00:59:22,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:22,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:59:22,913 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 [2024-10-12 00:59:22,914 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 17 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:59:23,018 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 17 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 35 states and 43 transitions. Complement of second has 16 states. [2024-10-12 00:59:23,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2024-10-12 00:59:23,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:59:23,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 8 transitions. [2024-10-12 00:59:23,028 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 8 transitions. Stem has 3 letters. Loop has 3 letters. [2024-10-12 00:59:23,030 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:59:23,030 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 8 transitions. Stem has 6 letters. Loop has 3 letters. [2024-10-12 00:59:23,030 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:59:23,030 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 8 transitions. Stem has 3 letters. Loop has 6 letters. [2024-10-12 00:59:23,031 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:59:23,032 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 43 transitions. [2024-10-12 00:59:23,035 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-12 00:59:23,043 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 19 states and 25 transitions. [2024-10-12 00:59:23,044 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2024-10-12 00:59:23,045 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2024-10-12 00:59:23,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 25 transitions. [2024-10-12 00:59:23,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:59:23,048 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 25 transitions. [2024-10-12 00:59:23,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 25 transitions. [2024-10-12 00:59:23,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2024-10-12 00:59:23,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-12 00:59:23,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2024-10-12 00:59:23,082 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 21 transitions. [2024-10-12 00:59:23,082 INFO L425 stractBuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2024-10-12 00:59:23,083 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-10-12 00:59:23,083 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 21 transitions. [2024-10-12 00:59:23,084 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-12 00:59:23,085 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:59:23,085 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:59:23,086 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:59:23,087 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2024-10-12 00:59:23,087 INFO L745 eck$LassoCheckResult]: Stem: 119#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 120#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 113#L28 call main_#t~ret7#1 := f91(main_~x~0#1);< 112#$Ultimate##0 ~x := #in~x; 114#L18 assume !(~x > 100); 110#L21 call #t~ret4 := f91(11 + ~x);< 115#$Ultimate##0 ~x := #in~x; 116#L18 assume ~x > 100;#res := ~x - 10; 123#f91FINAL assume true; 109#f91EXIT >#29#return; 111#L21-1 [2024-10-12 00:59:23,088 INFO L747 eck$LassoCheckResult]: Loop: 111#L21-1 call #t~ret5 := f91(#t~ret4);< 118#$Ultimate##0 ~x := #in~x; 125#L18 assume !(~x > 100); 117#L21 call #t~ret4 := f91(11 + ~x);< 118#$Ultimate##0 ~x := #in~x; 125#L18 assume ~x > 100;#res := ~x - 10; 122#f91FINAL assume true; 124#f91EXIT >#29#return; 111#L21-1 [2024-10-12 00:59:23,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:23,090 INFO L85 PathProgramCache]: Analyzing trace with hash -218206616, now seen corresponding path program 1 times [2024-10-12 00:59:23,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:59:23,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321261666] [2024-10-12 00:59:23,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:59:23,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:59:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:59:23,111 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:59:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:59:23,130 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:59:23,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:23,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1767505954, now seen corresponding path program 1 times [2024-10-12 00:59:23,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:59:23,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042828793] [2024-10-12 00:59:23,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:59:23,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:59:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:59:23,145 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:59:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:59:23,156 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:59:23,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:23,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1919740023, now seen corresponding path program 1 times [2024-10-12 00:59:23,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:59:23,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901480139] [2024-10-12 00:59:23,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:59:23,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:59:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:59:23,187 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:59:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:59:23,205 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:59:23,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:23,390 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:59:23,390 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:59:23,390 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:59:23,391 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:59:23,391 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-12 00:59:23,391 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:23,391 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:59:23,391 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:59:23,391 INFO L132 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration2_Loop [2024-10-12 00:59:23,391 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:59:23,391 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:59:23,392 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:23,398 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:23,400 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:23,449 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:59:23,449 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-12 00:59:23,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:23,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:23,453 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:23,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-10-12 00:59:23,455 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:59:23,455 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:59:23,469 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:59:23,470 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret5=0} Honda state: {f91_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:59:23,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2024-10-12 00:59:23,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:23,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:23,487 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:23,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-10-12 00:59:23,490 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:59:23,490 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:59:23,503 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:59:23,504 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:59:23,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:23,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:23,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:23,522 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:23,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-10-12 00:59:23,525 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:59:23,526 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:59:23,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:23,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:23,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:23,572 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:23,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-10-12 00:59:23,574 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 00:59:23,574 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:59:35,624 INFO L403 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2024-10-12 00:59:35,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:35,637 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:59:35,637 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:59:35,637 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:59:35,637 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:59:35,637 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-12 00:59:35,637 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:35,638 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:59:35,638 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:59:35,638 INFO L132 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration2_Loop [2024-10-12 00:59:35,638 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:59:35,638 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:59:35,639 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:35,642 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:35,645 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:35,695 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:59:35,695 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-12 00:59:35,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:35,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:35,697 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:35,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-10-12 00:59:35,700 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 [2024-10-12 00:59:35,711 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:59:35,711 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:59:35,711 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:59:35,711 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:59:35,711 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:59:35,712 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:59:35,712 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:59:35,716 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:59:35,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2024-10-12 00:59:35,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:35,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:35,735 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:35,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-10-12 00:59:35,737 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 [2024-10-12 00:59:35,750 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:59:35,750 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:59:35,751 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:59:35,751 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:59:35,751 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:59:35,751 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:59:35,751 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:59:35,756 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:59:35,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2024-10-12 00:59:35,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:35,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:35,775 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:35,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-10-12 00:59:35,778 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 [2024-10-12 00:59:35,791 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:59:35,792 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:59:35,792 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:59:35,792 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:59:35,792 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:59:35,795 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:59:35,795 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:59:35,798 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-12 00:59:35,805 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-12 00:59:35,806 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-12 00:59:35,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:35,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:35,814 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:35,826 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-12 00:59:35,826 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-12 00:59:35,826 INFO L474 LassoAnalysis]: Proved termination. [2024-10-12 00:59:35,827 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#t~ret4) = -2*f91_#t~ret4 + 201 Supporting invariants [] [2024-10-12 00:59:35,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-10-12 00:59:35,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2024-10-12 00:59:35,845 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-12 00:59:35,853 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #t~ret4 [2024-10-12 00:59:35,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:35,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:35,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 00:59:35,899 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:36,025 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-12 00:59:36,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:36,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:59:36,156 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2024-10-12 00:59:36,156 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6 Second operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-12 00:59:36,369 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6. Second operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 51 states and 73 transitions. Complement of second has 32 states. [2024-10-12 00:59:36,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2024-10-12 00:59:36,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-12 00:59:36,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2024-10-12 00:59:36,375 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 10 letters. Loop has 8 letters. [2024-10-12 00:59:36,375 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:59:36,375 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 18 letters. Loop has 8 letters. [2024-10-12 00:59:36,376 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:59:36,376 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 10 letters. Loop has 16 letters. [2024-10-12 00:59:36,376 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:59:36,376 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 73 transitions. [2024-10-12 00:59:36,381 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2024-10-12 00:59:36,388 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 42 states and 62 transitions. [2024-10-12 00:59:36,388 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2024-10-12 00:59:36,389 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2024-10-12 00:59:36,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 62 transitions. [2024-10-12 00:59:36,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:59:36,391 INFO L218 hiAutomatonCegarLoop]: Abstraction has 42 states and 62 transitions. [2024-10-12 00:59:36,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 62 transitions. [2024-10-12 00:59:36,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2024-10-12 00:59:36,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 10 states have call successors, (13), 7 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 7 states have call successors, (12) [2024-10-12 00:59:36,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2024-10-12 00:59:36,399 INFO L240 hiAutomatonCegarLoop]: Abstraction has 36 states and 51 transitions. [2024-10-12 00:59:36,399 INFO L425 stractBuchiCegarLoop]: Abstraction has 36 states and 51 transitions. [2024-10-12 00:59:36,400 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-10-12 00:59:36,400 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 51 transitions. [2024-10-12 00:59:36,402 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2024-10-12 00:59:36,402 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:59:36,402 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:59:36,402 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:59:36,403 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-12 00:59:36,403 INFO L745 eck$LassoCheckResult]: Stem: 316#$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(15, 2);call #Ultimate.allocInit(12, 3); 317#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 311#L28 call main_#t~ret7#1 := f91(main_~x~0#1);< 315#$Ultimate##0 ~x := #in~x; 321#L18 assume !(~x > 100); 306#L21 call #t~ret4 := f91(11 + ~x);< 304#$Ultimate##0 ~x := #in~x; 308#L18 assume ~x > 100;#res := ~x - 10; 326#f91FINAL assume true; 325#f91EXIT >#29#return; 296#L21-1 call #t~ret5 := f91(#t~ret4);< 313#$Ultimate##0 ~x := #in~x; 328#L18 assume !(~x > 100); 302#L21 [2024-10-12 00:59:36,403 INFO L747 eck$LassoCheckResult]: Loop: 302#L21 call #t~ret4 := f91(11 + ~x);< 301#$Ultimate##0 ~x := #in~x; 303#L18 assume !(~x > 100); 302#L21 [2024-10-12 00:59:36,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:36,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1987218266, now seen corresponding path program 2 times [2024-10-12 00:59:36,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:59:36,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950111581] [2024-10-12 00:59:36,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:59:36,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:59:36,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:59:36,413 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:59:36,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:59:36,421 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:59:36,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:36,422 INFO L85 PathProgramCache]: Analyzing trace with hash 57247, now seen corresponding path program 2 times [2024-10-12 00:59:36,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:59:36,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194349022] [2024-10-12 00:59:36,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:59:36,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:59:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:59:36,426 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:59:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:59:36,428 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:59:36,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:36,429 INFO L85 PathProgramCache]: Analyzing trace with hash -609818202, now seen corresponding path program 3 times [2024-10-12 00:59:36,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:59:36,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789226380] [2024-10-12 00:59:36,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:59:36,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:59:36,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:36,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-12 00:59:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:36,634 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 00:59:36,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:59:36,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789226380] [2024-10-12 00:59:36,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789226380] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:59:36,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:59:36,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 00:59:36,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866056653] [2024-10-12 00:59:36,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:59:36,698 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:59:36,698 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:59:36,698 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:59:36,698 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:59:36,698 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-12 00:59:36,698 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:36,698 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:59:36,699 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:59:36,699 INFO L132 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration3_Loop [2024-10-12 00:59:36,699 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:59:36,699 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:59:36,700 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:36,708 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:36,711 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:36,715 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:36,746 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:59:36,746 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-12 00:59:36,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:36,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:36,749 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:36,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-10-12 00:59:36,752 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:59:36,752 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:59:36,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-10-12 00:59:36,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:36,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:36,793 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:36,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-10-12 00:59:36,795 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 00:59:36,795 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:59:48,959 INFO L403 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2024-10-12 00:59:48,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2024-10-12 00:59:48,972 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:59:48,972 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:59:48,973 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:59:48,973 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:59:48,973 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-12 00:59:48,973 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:48,973 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:59:48,973 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:59:48,973 INFO L132 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration3_Loop [2024-10-12 00:59:48,973 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:59:48,973 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:59:48,974 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:48,981 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:48,988 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:48,992 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:49,022 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:59:49,022 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-12 00:59:49,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:49,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:49,025 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:49,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-10-12 00:59:49,027 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 [2024-10-12 00:59:49,039 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:59:49,039 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:59:49,039 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:59:49,039 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:59:49,040 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:59:49,041 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:59:49,041 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:59:49,043 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:59:49,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2024-10-12 00:59:49,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:49,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:49,056 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:49,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-10-12 00:59:49,058 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 [2024-10-12 00:59:49,068 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:59:49,068 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:59:49,068 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:59:49,068 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:59:49,068 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:59:49,069 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:59:49,069 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:59:49,073 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-12 00:59:49,079 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-12 00:59:49,079 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-12 00:59:49,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:49,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:49,082 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:49,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-10-12 00:59:49,085 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-12 00:59:49,085 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-12 00:59:49,085 INFO L474 LassoAnalysis]: Proved termination. [2024-10-12 00:59:49,086 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_~x) = -2*f91_~x + 189 Supporting invariants [] [2024-10-12 00:59:49,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2024-10-12 00:59:49,103 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-12 00:59:49,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:49,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-12 00:59:49,149 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:49,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2024-10-12 00:59:49,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:49,280 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 00:59:49,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:49,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:59:49,306 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2024-10-12 00:59:49,306 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19 Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-12 00:59:49,377 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 43 states and 59 transitions. Complement of second has 13 states. [2024-10-12 00:59:49,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-10-12 00:59:49,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-12 00:59:49,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2024-10-12 00:59:49,381 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 13 letters. Loop has 3 letters. [2024-10-12 00:59:49,381 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:59:49,381 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-12 00:59:49,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:49,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:49,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-12 00:59:49,423 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:49,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:49,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 00:59:49,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:49,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:59:49,533 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2024-10-12 00:59:49,533 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19 Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-12 00:59:49,590 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 43 states and 59 transitions. Complement of second has 13 states. [2024-10-12 00:59:49,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-10-12 00:59:49,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-12 00:59:49,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2024-10-12 00:59:49,596 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 13 letters. Loop has 3 letters. [2024-10-12 00:59:49,596 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:59:49,597 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-12 00:59:49,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:49,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-12 00:59:49,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:49,718 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 00:59:49,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:49,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:59:49,750 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2024-10-12 00:59:49,750 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19 Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-12 00:59:49,824 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 71 states and 100 transitions. Complement of second has 16 states. [2024-10-12 00:59:49,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-10-12 00:59:49,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-12 00:59:49,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 19 transitions. [2024-10-12 00:59:49,826 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 13 letters. Loop has 3 letters. [2024-10-12 00:59:49,826 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:59:49,826 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 16 letters. Loop has 3 letters. [2024-10-12 00:59:49,826 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:59:49,826 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 13 letters. Loop has 6 letters. [2024-10-12 00:59:49,827 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:59:49,827 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 71 states and 100 transitions. [2024-10-12 00:59:49,830 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2024-10-12 00:59:49,831 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 71 states to 48 states and 74 transitions. [2024-10-12 00:59:49,831 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2024-10-12 00:59:49,832 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2024-10-12 00:59:49,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 74 transitions. [2024-10-12 00:59:49,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:59:49,832 INFO L218 hiAutomatonCegarLoop]: Abstraction has 48 states and 74 transitions. [2024-10-12 00:59:49,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 74 transitions. [2024-10-12 00:59:49,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2024-10-12 00:59:49,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 11 states have call successors, (18), 9 states have call predecessors, (18), 5 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) [2024-10-12 00:59:49,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 60 transitions. [2024-10-12 00:59:49,838 INFO L240 hiAutomatonCegarLoop]: Abstraction has 42 states and 60 transitions. [2024-10-12 00:59:49,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:59:49,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 00:59:49,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:59:49,842 INFO L87 Difference]: Start difference. First operand 42 states and 60 transitions. Second operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-12 00:59:49,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 00:59:49,940 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2024-10-12 00:59:49,940 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 82 transitions. [2024-10-12 00:59:49,943 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2024-10-12 00:59:49,945 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 58 states and 75 transitions. [2024-10-12 00:59:49,947 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2024-10-12 00:59:49,947 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2024-10-12 00:59:49,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 75 transitions. [2024-10-12 00:59:49,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:59:49,948 INFO L218 hiAutomatonCegarLoop]: Abstraction has 58 states and 75 transitions. [2024-10-12 00:59:49,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states and 75 transitions. [2024-10-12 00:59:49,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2024-10-12 00:59:49,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 37 states have internal predecessors, (37), 13 states have call successors, (18), 11 states have call predecessors, (18), 9 states have return successors, (19), 8 states have call predecessors, (19), 11 states have call successors, (19) [2024-10-12 00:59:49,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2024-10-12 00:59:49,956 INFO L240 hiAutomatonCegarLoop]: Abstraction has 57 states and 74 transitions. [2024-10-12 00:59:49,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 00:59:49,957 INFO L425 stractBuchiCegarLoop]: Abstraction has 57 states and 74 transitions. [2024-10-12 00:59:49,957 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-10-12 00:59:49,957 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 57 states and 74 transitions. [2024-10-12 00:59:49,958 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2024-10-12 00:59:49,958 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:59:49,959 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:59:49,959 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-12 00:59:49,960 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 2, 2, 2, 2, 2, 1, 1] [2024-10-12 00:59:49,960 INFO L745 eck$LassoCheckResult]: Stem: 853#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 854#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 849#L28 call main_#t~ret7#1 := f91(main_~x~0#1);< 852#$Ultimate##0 ~x := #in~x; 876#L18 assume !(~x > 100); 869#L21 call #t~ret4 := f91(11 + ~x);< 871#$Ultimate##0 ~x := #in~x; 873#L18 assume !(~x > 100); 868#L21 call #t~ret4 := f91(11 + ~x);< 872#$Ultimate##0 ~x := #in~x; 875#L18 assume ~x > 100;#res := ~x - 10; 874#f91FINAL assume true; 870#f91EXIT >#29#return; 843#L21-1 call #t~ret5 := f91(#t~ret4);< 842#$Ultimate##0 ~x := #in~x; 844#L18 assume ~x > 100;#res := ~x - 10; 861#f91FINAL assume true; 891#f91EXIT >#31#return; 838#L21-2 #res := #t~ret5;havoc #t~ret4;havoc #t~ret5; 888#f91FINAL assume true; 887#f91EXIT >#29#return; 836#L21-1 call #t~ret5 := f91(#t~ret4);< 850#$Ultimate##0 [2024-10-12 00:59:49,960 INFO L747 eck$LassoCheckResult]: Loop: 850#$Ultimate##0 ~x := #in~x; 879#L18 assume !(~x > 100); 847#L21 call #t~ret4 := f91(11 + ~x);< 845#$Ultimate##0 ~x := #in~x; 848#L18 assume !(~x > 100); 846#L21 call #t~ret4 := f91(11 + ~x);< 864#$Ultimate##0 ~x := #in~x; 885#L18 assume ~x > 100;#res := ~x - 10; 883#f91FINAL assume true; 881#f91EXIT >#29#return; 857#L21-1 call #t~ret5 := f91(#t~ret4);< 880#$Ultimate##0 ~x := #in~x; 877#L18 assume ~x > 100;#res := ~x - 10; 878#f91FINAL assume true; 889#f91EXIT >#31#return; 838#L21-2 #res := #t~ret5;havoc #t~ret4;havoc #t~ret5; 888#f91FINAL assume true; 887#f91EXIT >#29#return; 837#L21-1 call #t~ret5 := f91(#t~ret4);< 850#$Ultimate##0 [2024-10-12 00:59:49,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:49,961 INFO L85 PathProgramCache]: Analyzing trace with hash -834951989, now seen corresponding path program 1 times [2024-10-12 00:59:49,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:59:49,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319402189] [2024-10-12 00:59:49,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:59:49,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:59:49,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:59:49,974 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:59:49,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:59:49,987 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:59:49,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:49,988 INFO L85 PathProgramCache]: Analyzing trace with hash -871747263, now seen corresponding path program 1 times [2024-10-12 00:59:49,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:59:49,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257464391] [2024-10-12 00:59:49,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:59:49,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:59:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:59:49,995 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:59:49,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:59:50,001 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:59:50,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:50,002 INFO L85 PathProgramCache]: Analyzing trace with hash 418853943, now seen corresponding path program 2 times [2024-10-12 00:59:50,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:59:50,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231992016] [2024-10-12 00:59:50,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:59:50,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:59:50,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:50,103 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-12 00:59:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:50,143 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 00:59:50,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:50,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 00:59:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:50,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-12 00:59:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:50,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 00:59:50,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:50,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 00:59:50,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:50,264 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-12 00:59:50,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:59:50,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231992016] [2024-10-12 00:59:50,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231992016] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:59:50,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539436254] [2024-10-12 00:59:50,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:59:50,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:59:50,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:50,268 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:59:50,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-12 00:59:50,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 00:59:50,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:59:50,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 00:59:50,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:50,369 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-12 00:59:50,373 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:59:50,641 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-12 00:59:50,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539436254] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:59:50,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:59:50,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 17 [2024-10-12 00:59:50,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153229116] [2024-10-12 00:59:50,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:59:50,816 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:59:50,817 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:59:50,817 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:59:50,817 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:59:50,817 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-12 00:59:50,817 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:50,817 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:59:50,817 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:59:50,817 INFO L132 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration4_Loop [2024-10-12 00:59:50,817 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:59:50,817 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:59:50,818 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:50,823 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:50,825 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:50,827 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:50,829 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:50,857 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:59:50,857 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-12 00:59:50,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:50,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:50,860 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:50,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-10-12 00:59:50,864 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:59:50,864 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:59:50,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:50,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:50,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:50,903 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:50,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-10-12 00:59:50,904 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 00:59:50,904 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:59:50,917 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-12 00:59:50,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2024-10-12 00:59:50,929 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:59:50,929 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:59:50,929 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:59:50,929 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:59:50,929 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-12 00:59:50,929 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:50,930 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:59:50,930 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:59:50,930 INFO L132 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration4_Loop [2024-10-12 00:59:50,930 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:59:50,930 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:59:50,931 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:50,939 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:50,941 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:50,943 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:50,945 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:50,966 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:59:50,966 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-12 00:59:50,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:50,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:50,970 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:50,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2024-10-12 00:59:50,971 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 [2024-10-12 00:59:50,983 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:59:50,983 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:59:50,984 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:59:50,984 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:59:50,984 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:59:50,990 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:59:50,990 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:59:50,993 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-12 00:59:50,997 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-12 00:59:50,997 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-12 00:59:50,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:50,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:50,999 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:51,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2024-10-12 00:59:51,002 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-12 00:59:51,002 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-12 00:59:51,002 INFO L474 LassoAnalysis]: Proved termination. [2024-10-12 00:59:51,002 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -1*f91_#in~x + 90 Supporting invariants [] [2024-10-12 00:59:51,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2024-10-12 00:59:51,015 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-12 00:59:51,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:51,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 00:59:51,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:51,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-12 00:59:51,270 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:51,477 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-12 00:59:51,477 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2024-10-12 00:59:51,478 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21 Second operand has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 6 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-12 00:59:51,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2024-10-12 00:59:51,919 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21. Second operand has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 6 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Result 125 states and 150 transitions. Complement of second has 49 states. [2024-10-12 00:59:51,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 15 states 2 stem states 12 non-accepting loop states 1 accepting loop states [2024-10-12 00:59:51,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 6 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-12 00:59:51,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 35 transitions. [2024-10-12 00:59:51,921 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 15 states and 35 transitions. Stem has 22 letters. Loop has 19 letters. [2024-10-12 00:59:51,922 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:59:51,922 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-12 00:59:51,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:51,965 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 00:59:51,967 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:52,139 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-12 00:59:52,141 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:52,297 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 00:59:52,298 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 9 loop predicates [2024-10-12 00:59:52,299 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21 Second operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 5 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-10-12 00:59:52,607 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21. Second operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 5 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Result 125 states and 150 transitions. Complement of second has 39 states. [2024-10-12 00:59:52,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2024-10-12 00:59:52,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 5 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-10-12 00:59:52,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 35 transitions. [2024-10-12 00:59:52,609 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 35 transitions. Stem has 22 letters. Loop has 19 letters. [2024-10-12 00:59:52,609 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:59:52,609 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-12 00:59:52,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:52,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 00:59:52,648 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:52,815 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-12 00:59:52,816 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:53,027 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-12 00:59:53,028 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2024-10-12 00:59:53,028 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21 Second operand has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 6 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-12 00:59:53,637 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21. Second operand has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 6 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Result 431 states and 531 transitions. Complement of second has 224 states. [2024-10-12 00:59:53,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 21 states 2 stem states 18 non-accepting loop states 1 accepting loop states [2024-10-12 00:59:53,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 6 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-12 00:59:53,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 50 transitions. [2024-10-12 00:59:53,643 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 21 states and 50 transitions. Stem has 22 letters. Loop has 19 letters. [2024-10-12 00:59:53,644 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:59:53,644 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 21 states and 50 transitions. Stem has 41 letters. Loop has 19 letters. [2024-10-12 00:59:53,645 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:59:53,645 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 21 states and 50 transitions. Stem has 22 letters. Loop has 38 letters. [2024-10-12 00:59:53,645 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:59:53,645 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 431 states and 531 transitions. [2024-10-12 00:59:53,663 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 29 [2024-10-12 00:59:53,671 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 431 states to 203 states and 269 transitions. [2024-10-12 00:59:53,672 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 95 [2024-10-12 00:59:53,673 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2024-10-12 00:59:53,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 203 states and 269 transitions. [2024-10-12 00:59:53,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:59:53,673 INFO L218 hiAutomatonCegarLoop]: Abstraction has 203 states and 269 transitions. [2024-10-12 00:59:53,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states and 269 transitions. [2024-10-12 00:59:53,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 157. [2024-10-12 00:59:53,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 97 states have (on average 1.092783505154639) internal successors, (106), 99 states have internal predecessors, (106), 35 states have call successors, (45), 29 states have call predecessors, (45), 25 states have return successors, (47), 28 states have call predecessors, (47), 32 states have call successors, (47) [2024-10-12 00:59:53,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 198 transitions. [2024-10-12 00:59:53,688 INFO L240 hiAutomatonCegarLoop]: Abstraction has 157 states and 198 transitions. [2024-10-12 00:59:53,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:59:53,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-12 00:59:53,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-10-12 00:59:53,689 INFO L87 Difference]: Start difference. First operand 157 states and 198 transitions. Second operand has 17 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 10 states have internal predecessors, (24), 8 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2024-10-12 00:59:53,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 00:59:53,862 INFO L93 Difference]: Finished difference Result 159 states and 188 transitions. [2024-10-12 00:59:53,862 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 159 states and 188 transitions. [2024-10-12 00:59:53,864 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2024-10-12 00:59:53,866 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 159 states to 104 states and 123 transitions. [2024-10-12 00:59:53,866 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 76 [2024-10-12 00:59:53,866 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2024-10-12 00:59:53,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 123 transitions. [2024-10-12 00:59:53,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:59:53,867 INFO L218 hiAutomatonCegarLoop]: Abstraction has 104 states and 123 transitions. [2024-10-12 00:59:53,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states and 123 transitions. [2024-10-12 00:59:53,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 100. [2024-10-12 00:59:53,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 64 states have internal predecessors, (66), 21 states have call successors, (28), 20 states have call predecessors, (28), 16 states have return successors, (25), 15 states have call predecessors, (25), 18 states have call successors, (25) [2024-10-12 00:59:53,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 119 transitions. [2024-10-12 00:59:53,874 INFO L240 hiAutomatonCegarLoop]: Abstraction has 100 states and 119 transitions. [2024-10-12 00:59:53,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 00:59:53,875 INFO L425 stractBuchiCegarLoop]: Abstraction has 100 states and 119 transitions. [2024-10-12 00:59:53,875 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-10-12 00:59:53,875 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 100 states and 119 transitions. [2024-10-12 00:59:53,876 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2024-10-12 00:59:53,876 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:59:53,876 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:59:53,877 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [7, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1] [2024-10-12 00:59:53,877 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2024-10-12 00:59:53,877 INFO L745 eck$LassoCheckResult]: Stem: 3022#$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(15, 2);call #Ultimate.allocInit(12, 3); 3023#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 3020#L28 call main_#t~ret7#1 := f91(main_~x~0#1);< 3021#$Ultimate##0 ~x := #in~x; 3033#L18 assume !(~x > 100); 3034#L21 call #t~ret4 := f91(11 + ~x);< 3037#$Ultimate##0 ~x := #in~x; 3050#L18 assume !(~x > 100); 3044#L21 call #t~ret4 := f91(11 + ~x);< 3048#$Ultimate##0 ~x := #in~x; 3051#L18 assume ~x > 100;#res := ~x - 10; 3049#f91FINAL assume true; 3047#f91EXIT >#29#return; 3043#L21-1 call #t~ret5 := f91(#t~ret4);< 3045#$Ultimate##0 ~x := #in~x; 3077#L18 assume ~x > 100;#res := ~x - 10; 3064#f91FINAL assume true; 3063#f91EXIT >#31#return; 3061#L21-2 #res := #t~ret5;havoc #t~ret4;havoc #t~ret5; 3060#f91FINAL assume true; 3059#f91EXIT >#29#return; 3052#L21-1 call #t~ret5 := f91(#t~ret4);< 3058#$Ultimate##0 ~x := #in~x; 3056#L18 assume !(~x > 100); 3015#L21 call #t~ret4 := f91(11 + ~x);< 3014#$Ultimate##0 ~x := #in~x; 3016#L18 assume !(~x > 100); 3004#L21 call #t~ret4 := f91(11 + ~x);< 3055#$Ultimate##0 ~x := #in~x; 3102#L18 assume ~x > 100;#res := ~x - 10; 3101#f91FINAL assume true; 3003#f91EXIT >#29#return; 3005#L21-1 [2024-10-12 00:59:53,878 INFO L747 eck$LassoCheckResult]: Loop: 3005#L21-1 call #t~ret5 := f91(#t~ret4);< 3017#$Ultimate##0 ~x := #in~x; 3099#L18 assume !(~x > 100); 3035#L21 call #t~ret4 := f91(11 + ~x);< 3036#$Ultimate##0 ~x := #in~x; 3097#L18 assume ~x > 100;#res := ~x - 10; 3096#f91FINAL assume true; 3095#f91EXIT >#29#return; 3005#L21-1 [2024-10-12 00:59:53,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:53,878 INFO L85 PathProgramCache]: Analyzing trace with hash 2083076242, now seen corresponding path program 3 times [2024-10-12 00:59:53,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:59:53,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217581218] [2024-10-12 00:59:53,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:59:53,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:59:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:53,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-12 00:59:53,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:53,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 00:59:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:54,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 00:59:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:54,011 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-12 00:59:54,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:54,014 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-12 00:59:54,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:59:54,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217581218] [2024-10-12 00:59:54,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217581218] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:59:54,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48397274] [2024-10-12 00:59:54,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 00:59:54,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:59:54,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:54,018 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:59:54,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-10-12 00:59:54,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-12 00:59:54,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:59:54,060 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 00:59:54,062 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:54,081 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 00:59:54,081 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:59:54,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48397274] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:59:54,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:59:54,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 9 [2024-10-12 00:59:54,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535206557] [2024-10-12 00:59:54,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:59:54,082 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-12 00:59:54,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:54,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1767505954, now seen corresponding path program 2 times [2024-10-12 00:59:54,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:59:54,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371199775] [2024-10-12 00:59:54,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:59:54,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:59:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:59:54,086 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:59:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:59:54,089 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:59:54,172 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:59:54,173 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:59:54,173 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:59:54,173 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:59:54,173 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-12 00:59:54,173 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:54,173 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:59:54,173 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:59:54,173 INFO L132 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration5_Loop [2024-10-12 00:59:54,173 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:59:54,173 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:59:54,174 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:54,176 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:54,185 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:54,219 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:59:54,219 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-12 00:59:54,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:54,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:54,221 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:54,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2024-10-12 00:59:54,223 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:59:54,223 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:59:54,241 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:59:54,241 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:59:54,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2024-10-12 00:59:54,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:54,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:54,260 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:54,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2024-10-12 00:59:54,263 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:59:54,263 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:59:54,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:54,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:54,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:54,298 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:54,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2024-10-12 00:59:54,300 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 00:59:54,300 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 01:00:06,603 INFO L403 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2024-10-12 01:00:06,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:06,625 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 01:00:06,625 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 01:00:06,625 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 01:00:06,625 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 01:00:06,625 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-12 01:00:06,625 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:06,625 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 01:00:06,625 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 01:00:06,625 INFO L132 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration5_Loop [2024-10-12 01:00:06,625 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 01:00:06,625 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 01:00:06,626 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:06,632 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:06,642 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:06,669 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 01:00:06,669 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-12 01:00:06,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:06,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:06,672 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:06,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2024-10-12 01:00:06,674 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 [2024-10-12 01:00:06,684 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 01:00:06,684 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 01:00:06,684 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 01:00:06,684 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 01:00:06,684 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 01:00:06,685 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 01:00:06,685 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 01:00:06,686 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 01:00:06,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2024-10-12 01:00:06,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:06,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:06,698 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:06,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2024-10-12 01:00:06,700 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 [2024-10-12 01:00:06,711 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 01:00:06,711 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 01:00:06,711 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 01:00:06,711 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 01:00:06,711 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 01:00:06,713 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 01:00:06,713 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 01:00:06,716 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-12 01:00:06,720 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-12 01:00:06,720 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-12 01:00:06,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:06,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:06,723 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:06,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2024-10-12 01:00:06,725 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-12 01:00:06,725 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-12 01:00:06,726 INFO L474 LassoAnalysis]: Proved termination. [2024-10-12 01:00:06,726 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#t~ret4) = -2*f91_#t~ret4 + 201 Supporting invariants [] [2024-10-12 01:00:06,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:06,739 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-12 01:00:06,740 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #t~ret4 [2024-10-12 01:00:06,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:06,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:06,788 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-12 01:00:06,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:06,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:06,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-12 01:00:06,986 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:07,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 01:00:07,070 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2024-10-12 01:00:07,070 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24 Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-12 01:00:07,216 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24. Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 139 states and 161 transitions. Complement of second has 24 states. [2024-10-12 01:00:07,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2024-10-12 01:00:07,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-12 01:00:07,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2024-10-12 01:00:07,218 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 32 letters. Loop has 8 letters. [2024-10-12 01:00:07,218 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 01:00:07,218 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-12 01:00:07,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:07,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-12 01:00:07,275 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:07,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:07,490 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-12 01:00:07,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:07,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 01:00:07,561 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 7 loop predicates [2024-10-12 01:00:07,561 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24 Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-12 01:00:07,669 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24. Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 139 states and 161 transitions. Complement of second has 24 states. [2024-10-12 01:00:07,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2024-10-12 01:00:07,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-12 01:00:07,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2024-10-12 01:00:07,672 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 32 letters. Loop has 8 letters. [2024-10-12 01:00:07,672 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 01:00:07,672 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-12 01:00:07,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:07,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:07,720 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-12 01:00:07,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:07,923 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-12 01:00:07,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:08,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 01:00:08,010 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2024-10-12 01:00:08,011 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24 Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-12 01:00:08,164 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24. Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 181 states and 211 transitions. Complement of second has 27 states. [2024-10-12 01:00:08,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2024-10-12 01:00:08,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-12 01:00:08,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 21 transitions. [2024-10-12 01:00:08,166 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 21 transitions. Stem has 32 letters. Loop has 8 letters. [2024-10-12 01:00:08,166 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 01:00:08,166 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 21 transitions. Stem has 40 letters. Loop has 8 letters. [2024-10-12 01:00:08,167 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 01:00:08,167 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 21 transitions. Stem has 32 letters. Loop has 16 letters. [2024-10-12 01:00:08,167 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 01:00:08,167 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 181 states and 211 transitions. [2024-10-12 01:00:08,169 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-12 01:00:08,169 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 181 states to 0 states and 0 transitions. [2024-10-12 01:00:08,169 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-10-12 01:00:08,170 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-10-12 01:00:08,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-10-12 01:00:08,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-12 01:00:08,170 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 01:00:08,170 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 01:00:08,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 01:00:08,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 01:00:08,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-12 01:00:08,171 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 5 states have internal predecessors, (16), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-12 01:00:08,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 01:00:08,171 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2024-10-12 01:00:08,171 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2024-10-12 01:00:08,171 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-12 01:00:08,171 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2024-10-12 01:00:08,171 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-10-12 01:00:08,172 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-10-12 01:00:08,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-10-12 01:00:08,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-12 01:00:08,172 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 01:00:08,172 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 01:00:08,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 01:00:08,172 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 01:00:08,173 INFO L332 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-10-12 01:00:08,173 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-10-12 01:00:08,173 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-12 01:00:08,173 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-10-12 01:00:08,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 01:00:08 BoogieIcfgContainer [2024-10-12 01:00:08,180 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-10-12 01:00:08,181 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-12 01:00:08,181 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-12 01:00:08,181 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-12 01:00:08,181 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:59:21" (3/4) ... [2024-10-12 01:00:08,183 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-12 01:00:08,184 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-12 01:00:08,185 INFO L158 Benchmark]: Toolchain (without parser) took 47314.62ms. Allocated memory is still 180.4MB. Free memory was 114.8MB in the beginning and 61.4MB in the end (delta: 53.4MB). Peak memory consumption was 55.5MB. Max. memory is 16.1GB. [2024-10-12 01:00:08,185 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 104.9MB. Free memory is still 73.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 01:00:08,185 INFO L158 Benchmark]: CACSL2BoogieTranslator took 262.38ms. Allocated memory is still 180.4MB. Free memory was 114.6MB in the beginning and 103.1MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-12 01:00:08,186 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.85ms. Allocated memory is still 180.4MB. Free memory was 103.1MB in the beginning and 101.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 01:00:08,186 INFO L158 Benchmark]: Boogie Preprocessor took 34.35ms. Allocated memory is still 180.4MB. Free memory was 101.7MB in the beginning and 100.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 01:00:08,186 INFO L158 Benchmark]: RCFGBuilder took 287.89ms. Allocated memory is still 180.4MB. Free memory was 100.2MB in the beginning and 143.6MB in the end (delta: -43.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-12 01:00:08,187 INFO L158 Benchmark]: BuchiAutomizer took 46686.60ms. Allocated memory is still 180.4MB. Free memory was 143.6MB in the beginning and 61.4MB in the end (delta: 82.2MB). Peak memory consumption was 85.3MB. Max. memory is 16.1GB. [2024-10-12 01:00:08,187 INFO L158 Benchmark]: Witness Printer took 3.63ms. Allocated memory is still 180.4MB. Free memory is still 61.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 01:00:08,189 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 104.9MB. Free memory is still 73.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 262.38ms. Allocated memory is still 180.4MB. Free memory was 114.6MB in the beginning and 103.1MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.85ms. Allocated memory is still 180.4MB. Free memory was 103.1MB in the beginning and 101.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 34.35ms. Allocated memory is still 180.4MB. Free memory was 101.7MB in the beginning and 100.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 287.89ms. Allocated memory is still 180.4MB. Free memory was 100.2MB in the beginning and 143.6MB in the end (delta: -43.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 46686.60ms. Allocated memory is still 180.4MB. Free memory was 143.6MB in the beginning and 61.4MB in the end (delta: 82.2MB). Peak memory consumption was 85.3MB. Max. memory is 16.1GB. * Witness Printer took 3.63ms. Allocated memory is still 180.4MB. Free memory is still 61.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #t~ret4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #t~ret4 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (3 trivial, 2 deterministic, 3 nondeterministic). One deterministic module has affine ranking function (211 + ((long long) -2 * \old(x))) and consists of 5 locations. One deterministic module has affine ranking function null and consists of 8 locations. One nondeterministic module has affine ranking function (((long long) -2 * x) + 189) and consists of 6 locations. One nondeterministic module has affine ranking function (((long long) -1 * \old(x)) + 90) and consists of 21 locations. One nondeterministic module has affine ranking function null and consists of 8 locations. 3 modules have a trivial ranking function, the largest among these consists of 17 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 46.6s and 6 iterations. TraceHistogramMax:7. Analysis of lassos took 40.5s. Construction of modules took 0.6s. Büchi inclusion checks took 5.1s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 6. Automata minimization 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 65 StatesRemovedByMinimization, 6 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 [2, 0, 3, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 12/24 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 250 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 235 mSDsluCounter, 402 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 232 mSDsCounter, 199 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 821 IncrementalHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 199 mSolverCounterUnsat, 170 mSDtfsCounter, 821 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq176 hnf90 smp100 dnf100 smp100 tf110 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 29ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 3 LassoNonterminationAnalysisTime: 37.2s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-10-12 01:00:08,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:08,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-10-12 01:00:08,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE