./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/Piecewise.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted/Piecewise.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ac2fbc3b92c237eee672d002679ee7a51e4ecff20f91c05c8145e18adc82f593 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:13:24,771 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:13:24,835 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-19 14:13:24,839 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:13:24,840 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:13:24,865 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:13:24,867 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:13:24,867 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:13:24,868 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:13:24,869 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:13:24,870 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:13:24,870 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:13:24,870 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:13:24,871 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-19 14:13:24,871 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-19 14:13:24,871 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-19 14:13:24,871 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-19 14:13:24,872 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-19 14:13:24,872 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-19 14:13:24,872 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:13:24,872 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-19 14:13:24,873 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:13:24,873 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:13:24,873 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-19 14:13:24,873 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-19 14:13:24,874 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-19 14:13:24,874 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:13:24,874 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:13:24,874 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:13:24,875 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-19 14:13:24,875 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:13:24,875 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:13:24,875 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:13:24,876 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:13:24,876 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:13:24,876 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-19 14:13:24,876 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac2fbc3b92c237eee672d002679ee7a51e4ecff20f91c05c8145e18adc82f593 [2024-11-19 14:13:25,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:13:25,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:13:25,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:13:25,094 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:13:25,098 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:13:25,099 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Piecewise.c [2024-11-19 14:13:26,489 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:13:26,656 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:13:26,657 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Piecewise.c [2024-11-19 14:13:26,662 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b2902a9a/13a16668451445b2902c14a1223958bb/FLAG0cb0eef5d [2024-11-19 14:13:27,054 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b2902a9a/13a16668451445b2902c14a1223958bb [2024-11-19 14:13:27,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:13:27,057 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:13:27,058 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:13:27,058 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:13:27,063 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:13:27,063 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:13:27" (1/1) ... [2024-11-19 14:13:27,064 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e7da37d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:13:27, skipping insertion in model container [2024-11-19 14:13:27,064 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:13:27" (1/1) ... [2024-11-19 14:13:27,078 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:13:27,197 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:13:27,201 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:13:27,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:13:27,252 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:13:27,252 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:13:27 WrapperNode [2024-11-19 14:13:27,252 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:13:27,253 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:13:27,253 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:13:27,253 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:13:27,259 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:13:27" (1/1) ... [2024-11-19 14:13:27,263 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:13:27" (1/1) ... [2024-11-19 14:13:27,275 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2024-11-19 14:13:27,275 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:13:27,276 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:13:27,276 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:13:27,276 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:13:27,284 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:13:27" (1/1) ... [2024-11-19 14:13:27,284 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:13:27" (1/1) ... [2024-11-19 14:13:27,284 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:13:27" (1/1) ... [2024-11-19 14:13:27,288 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-19 14:13:27,289 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:13:27" (1/1) ... [2024-11-19 14:13:27,289 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:13:27" (1/1) ... [2024-11-19 14:13:27,290 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:13:27" (1/1) ... [2024-11-19 14:13:27,293 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:13:27" (1/1) ... [2024-11-19 14:13:27,294 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:13:27" (1/1) ... [2024-11-19 14:13:27,294 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:13:27" (1/1) ... [2024-11-19 14:13:27,295 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:13:27,296 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:13:27,296 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:13:27,296 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:13:27,297 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:13:27" (1/1) ... [2024-11-19 14:13:27,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:27,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:27,326 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:27,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-19 14:13:27,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:13:27,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:13:27,419 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:13:27,421 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:13:27,459 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-11-19 14:13:27,459 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:13:27,475 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:13:27,475 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 14:13:27,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:13:27 BoogieIcfgContainer [2024-11-19 14:13:27,475 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:13:27,476 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-19 14:13:27,477 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-19 14:13:27,479 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-19 14:13:27,480 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-19 14:13:27,480 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 02:13:27" (1/3) ... [2024-11-19 14:13:27,481 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6d90051c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 02:13:27, skipping insertion in model container [2024-11-19 14:13:27,481 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-19 14:13:27,481 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:13:27" (2/3) ... [2024-11-19 14:13:27,481 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6d90051c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 02:13:27, skipping insertion in model container [2024-11-19 14:13:27,482 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-19 14:13:27,482 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:13:27" (3/3) ... [2024-11-19 14:13:27,482 INFO L332 chiAutomizerObserver]: Analyzing ICFG Piecewise.c [2024-11-19 14:13:27,531 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-19 14:13:27,531 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-19 14:13:27,531 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-19 14:13:27,531 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-19 14:13:27,531 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-19 14:13:27,532 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-19 14:13:27,532 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-19 14:13:27,533 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-19 14:13:27,536 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:13:27,550 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-19 14:13:27,551 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-19 14:13:27,551 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-19 14:13:27,556 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-19 14:13:27,556 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-19 14:13:27,557 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-19 14:13:27,558 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:13:27,559 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-19 14:13:27,559 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-19 14:13:27,559 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-19 14:13:27,559 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-19 14:13:27,559 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-19 14:13:27,567 INFO L745 eck$LassoCheckResult]: Stem: 5#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;havoc main_#t~nondet0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 4#L26-2true [2024-11-19 14:13:27,567 INFO L747 eck$LassoCheckResult]: Loop: 4#L26-2true assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 6#L23true assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;havoc main_#t~nondet2#1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 4#L26-2true [2024-11-19 14:13:27,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:13:27,573 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-11-19 14:13:27,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:13:27,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841580176] [2024-11-19 14:13:27,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:13:27,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:13:27,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:13:27,647 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:13:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:13:27,661 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:13:27,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:13:27,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 1 times [2024-11-19 14:13:27,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:13:27,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68025851] [2024-11-19 14:13:27,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:13:27,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:13:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:13:27,674 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:13:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:13:27,682 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:13:27,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:13:27,684 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2024-11-19 14:13:27,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:13:27,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533861076] [2024-11-19 14:13:27,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:13:27,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:13:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:13:27,696 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:13:27,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:13:27,705 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:13:27,797 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 14:13:27,798 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 14:13:27,798 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 14:13:27,798 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 14:13:27,798 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-19 14:13:27,798 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:27,798 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 14:13:27,798 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 14:13:27,798 INFO L132 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration1_Loop [2024-11-19 14:13:27,798 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 14:13:27,799 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 14:13:27,813 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:27,822 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:27,834 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:27,837 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:27,911 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 14:13:27,912 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-19 14:13:27,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:27,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:27,915 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:27,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-11-19 14:13:27,921 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 14:13:27,921 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:13:27,945 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 14:13:27,945 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 14:13:27,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2024-11-19 14:13:27,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:27,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:27,960 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:27,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-11-19 14:13:27,963 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 14:13:27,963 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:13:27,982 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 14:13:27,983 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 14:13:27,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2024-11-19 14:13:27,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:27,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:27,996 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:27,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-11-19 14:13:27,998 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 14:13:27,998 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:13:28,009 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 14:13:28,009 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=0} Honda state: {ULTIMATE.start_main_#t~nondet2#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 14:13:28,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-11-19 14:13:28,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:28,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:28,023 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:28,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-11-19 14:13:28,025 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 14:13:28,025 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:13:28,051 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-11-19 14:13:28,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:28,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:28,054 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:28,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-11-19 14:13:28,057 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-19 14:13:28,057 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:13:28,085 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-19 14:13:28,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2024-11-19 14:13:28,091 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 14:13:28,091 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 14:13:28,091 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 14:13:28,091 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 14:13:28,091 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-19 14:13:28,091 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:28,091 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 14:13:28,091 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 14:13:28,091 INFO L132 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration1_Loop [2024-11-19 14:13:28,091 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 14:13:28,091 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 14:13:28,093 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:28,097 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:28,100 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:28,102 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:28,141 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 14:13:28,145 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-19 14:13:28,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:28,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:28,150 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:28,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-11-19 14:13:28,153 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 [2024-11-19 14:13:28,163 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 14:13:28,163 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 14:13:28,164 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 14:13:28,164 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 14:13:28,172 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-19 14:13:28,173 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-19 14:13:28,180 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 14:13:28,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2024-11-19 14:13:28,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:28,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:28,197 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:28,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-11-19 14:13:28,199 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 [2024-11-19 14:13:28,209 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 14:13:28,210 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 14:13:28,210 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 14:13:28,210 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 14:13:28,212 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-19 14:13:28,212 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-19 14:13:28,215 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 14:13:28,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2024-11-19 14:13:28,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:28,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:28,227 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:28,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-11-19 14:13:28,229 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 [2024-11-19 14:13:28,239 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 14:13:28,239 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 14:13:28,240 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 14:13:28,240 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 14:13:28,240 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 14:13:28,241 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 14:13:28,241 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 14:13:28,242 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 14:13:28,253 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2024-11-19 14:13:28,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:28,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:28,258 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:28,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-11-19 14:13:28,263 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 [2024-11-19 14:13:28,272 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 14:13:28,272 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 14:13:28,273 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 14:13:28,273 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 14:13:28,273 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 14:13:28,274 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 14:13:28,274 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 14:13:28,276 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-19 14:13:28,278 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-11-19 14:13:28,279 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-19 14:13:28,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:28,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:28,282 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:28,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-11-19 14:13:28,284 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-19 14:13:28,284 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-19 14:13:28,284 INFO L474 LassoAnalysis]: Proved termination. [2024-11-19 14:13:28,285 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0#1) = 1*ULTIMATE.start_main_~q~0#1 Supporting invariants [] [2024-11-19 14:13:28,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2024-11-19 14:13:28,298 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-19 14:13:28,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:13:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:13:28,322 WARN L253 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 14:13:28,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:13:28,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:13:28,333 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:13:28,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:13:28,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:13:28,369 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-19 14:13:28,371 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:13:28,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2024-11-19 14:13:28,444 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 23 states and 35 transitions. Complement of second has 6 states. [2024-11-19 14:13:28,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-19 14:13:28,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:13:28,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2024-11-19 14:13:28,455 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 2 letters. Loop has 2 letters. [2024-11-19 14:13:28,456 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:13:28,456 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 4 letters. Loop has 2 letters. [2024-11-19 14:13:28,457 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:13:28,457 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 2 letters. Loop has 4 letters. [2024-11-19 14:13:28,457 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:13:28,458 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2024-11-19 14:13:28,494 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2024-11-19 14:13:28,497 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 14 states and 20 transitions. [2024-11-19 14:13:28,499 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2024-11-19 14:13:28,499 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2024-11-19 14:13:28,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2024-11-19 14:13:28,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-19 14:13:28,500 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 20 transitions. [2024-11-19 14:13:28,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2024-11-19 14:13:28,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2024-11-19 14:13:28,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:13:28,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2024-11-19 14:13:28,548 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 19 transitions. [2024-11-19 14:13:28,548 INFO L425 stractBuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2024-11-19 14:13:28,548 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-19 14:13:28,548 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2024-11-19 14:13:28,548 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2024-11-19 14:13:28,549 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-19 14:13:28,549 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-19 14:13:28,549 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-19 14:13:28,549 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-19 14:13:28,549 INFO L745 eck$LassoCheckResult]: Stem: 75#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 76#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;havoc main_#t~nondet0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 79#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 69#L23 [2024-11-19 14:13:28,549 INFO L747 eck$LassoCheckResult]: Loop: 69#L23 assume !(main_~q~0#1 < main_~p~0#1); 72#L26 assume !(main_~p~0#1 < main_~q~0#1); 68#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 69#L23 [2024-11-19 14:13:28,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:13:28,550 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2024-11-19 14:13:28,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:13:28,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542296716] [2024-11-19 14:13:28,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:13:28,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:13:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:13:28,556 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:13:28,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:13:28,560 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:13:28,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:13:28,561 INFO L85 PathProgramCache]: Analyzing trace with hash 45829, now seen corresponding path program 1 times [2024-11-19 14:13:28,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:13:28,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046181253] [2024-11-19 14:13:28,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:13:28,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:13:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:13:28,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:13:28,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:13:28,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046181253] [2024-11-19 14:13:28,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046181253] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:13:28,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:13:28,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:13:28,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123906171] [2024-11-19 14:13:28,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:13:28,623 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-19 14:13:28,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:13:28,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:13:28,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:13:28,629 INFO L87 Difference]: Start difference. First operand 13 states and 19 transitions. cyclomatic complexity: 9 Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:13:28,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 14:13:28,642 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2024-11-19 14:13:28,642 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 17 transitions. [2024-11-19 14:13:28,643 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-19 14:13:28,643 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 13 transitions. [2024-11-19 14:13:28,643 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2024-11-19 14:13:28,643 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2024-11-19 14:13:28,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2024-11-19 14:13:28,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-19 14:13:28,644 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2024-11-19 14:13:28,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2024-11-19 14:13:28,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2024-11-19 14:13:28,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:13:28,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 12 transitions. [2024-11-19 14:13:28,645 INFO L240 hiAutomatonCegarLoop]: Abstraction has 9 states and 12 transitions. [2024-11-19 14:13:28,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:13:28,646 INFO L425 stractBuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2024-11-19 14:13:28,646 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-19 14:13:28,646 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 12 transitions. [2024-11-19 14:13:28,646 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-19 14:13:28,646 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-19 14:13:28,646 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-19 14:13:28,647 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-11-19 14:13:28,647 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-19 14:13:28,647 INFO L745 eck$LassoCheckResult]: Stem: 108#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 109#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;havoc main_#t~nondet0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 110#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 105#L23 assume !(main_~q~0#1 < main_~p~0#1); 107#L26 [2024-11-19 14:13:28,647 INFO L747 eck$LassoCheckResult]: Loop: 107#L26 assume main_~p~0#1 < main_~q~0#1;main_~p~0#1 := main_~p~0#1 - 1;havoc main_#t~nondet3#1;main_~q~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 102#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 103#L23 assume !(main_~q~0#1 < main_~p~0#1); 107#L26 [2024-11-19 14:13:28,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:13:28,648 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2024-11-19 14:13:28,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:13:28,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122967464] [2024-11-19 14:13:28,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:13:28,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:13:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:13:28,652 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:13:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:13:28,654 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:13:28,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:13:28,655 INFO L85 PathProgramCache]: Analyzing trace with hash 48407, now seen corresponding path program 1 times [2024-11-19 14:13:28,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:13:28,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98170382] [2024-11-19 14:13:28,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:13:28,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:13:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:13:28,659 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:13:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:13:28,662 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:13:28,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:13:28,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1810722640, now seen corresponding path program 1 times [2024-11-19 14:13:28,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:13:28,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351951216] [2024-11-19 14:13:28,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:13:28,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:13:28,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:13:28,667 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:13:28,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:13:28,671 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:13:28,705 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 14:13:28,705 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 14:13:28,705 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 14:13:28,705 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 14:13:28,705 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-19 14:13:28,705 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:28,705 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 14:13:28,705 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 14:13:28,705 INFO L132 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration3_Loop [2024-11-19 14:13:28,705 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 14:13:28,705 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 14:13:28,706 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:28,709 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:28,711 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:28,724 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:28,779 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 14:13:28,779 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-19 14:13:28,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:28,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:28,780 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:28,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-11-19 14:13:28,785 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 14:13:28,785 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:13:28,804 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 14:13:28,804 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 14:13:28,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2024-11-19 14:13:28,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:28,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:28,817 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:28,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-11-19 14:13:28,819 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 14:13:28,819 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:13:28,831 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 14:13:28,831 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet3#1=0} Honda state: {ULTIMATE.start_main_#t~nondet3#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 14:13:28,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2024-11-19 14:13:28,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:28,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:28,843 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:28,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-11-19 14:13:28,845 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 14:13:28,845 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:13:28,871 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2024-11-19 14:13:28,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:28,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:28,873 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:28,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-11-19 14:13:28,875 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-19 14:13:28,876 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:13:28,949 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-19 14:13:28,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2024-11-19 14:13:28,954 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 14:13:28,954 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 14:13:28,954 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 14:13:28,955 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 14:13:28,955 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-19 14:13:28,955 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:28,955 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 14:13:28,955 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 14:13:28,955 INFO L132 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration3_Loop [2024-11-19 14:13:28,955 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 14:13:28,955 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 14:13:28,961 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:28,967 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:28,969 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:28,985 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:29,029 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 14:13:29,029 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-19 14:13:29,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:29,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:29,035 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:29,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-11-19 14:13:29,038 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 [2024-11-19 14:13:29,047 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 14:13:29,048 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 14:13:29,048 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 14:13:29,048 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 14:13:29,049 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-19 14:13:29,049 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-19 14:13:29,052 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 14:13:29,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-11-19 14:13:29,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:29,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:29,065 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:29,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-11-19 14:13:29,066 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 [2024-11-19 14:13:29,076 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 14:13:29,076 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 14:13:29,076 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 14:13:29,076 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 14:13:29,076 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 14:13:29,077 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 14:13:29,077 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 14:13:29,078 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 14:13:29,088 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2024-11-19 14:13:29,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:29,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:29,090 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:29,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-11-19 14:13:29,093 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 [2024-11-19 14:13:29,102 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 14:13:29,102 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 14:13:29,102 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 14:13:29,102 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 14:13:29,102 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 14:13:29,103 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 14:13:29,103 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 14:13:29,107 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-19 14:13:29,108 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-11-19 14:13:29,109 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-19 14:13:29,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:29,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:29,110 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:29,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-11-19 14:13:29,113 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-19 14:13:29,113 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-19 14:13:29,113 INFO L474 LassoAnalysis]: Proved termination. [2024-11-19 14:13:29,113 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~p~0#1) = 1*ULTIMATE.start_main_~p~0#1 Supporting invariants [] [2024-11-19 14:13:29,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2024-11-19 14:13:29,125 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-19 14:13:29,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:13:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:13:29,139 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 14:13:29,139 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:13:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:13:29,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:13:29,146 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:13:29,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:13:29,184 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 [2024-11-19 14:13:29,184 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 12 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:13:29,201 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 12 transitions. cyclomatic complexity: 5. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 17 states and 21 transitions. Complement of second has 7 states. [2024-11-19 14:13:29,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-11-19 14:13:29,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:13:29,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2024-11-19 14:13:29,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 4 letters. Loop has 3 letters. [2024-11-19 14:13:29,203 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:13:29,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2024-11-19 14:13:29,203 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:13:29,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 4 letters. Loop has 6 letters. [2024-11-19 14:13:29,204 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:13:29,204 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2024-11-19 14:13:29,204 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-19 14:13:29,205 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 14 states and 18 transitions. [2024-11-19 14:13:29,205 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2024-11-19 14:13:29,205 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2024-11-19 14:13:29,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 18 transitions. [2024-11-19 14:13:29,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-19 14:13:29,205 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 18 transitions. [2024-11-19 14:13:29,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 18 transitions. [2024-11-19 14:13:29,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2024-11-19 14:13:29,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:13:29,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2024-11-19 14:13:29,207 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 17 transitions. [2024-11-19 14:13:29,207 INFO L425 stractBuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2024-11-19 14:13:29,207 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-19 14:13:29,208 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 17 transitions. [2024-11-19 14:13:29,208 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-19 14:13:29,208 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-19 14:13:29,208 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-19 14:13:29,208 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2024-11-19 14:13:29,208 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-19 14:13:29,208 INFO L745 eck$LassoCheckResult]: Stem: 179#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 180#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;havoc main_#t~nondet0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 184#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 176#L23 assume !(main_~q~0#1 < main_~p~0#1); 178#L26 assume main_~p~0#1 < main_~q~0#1;main_~p~0#1 := main_~p~0#1 - 1;havoc main_#t~nondet3#1;main_~q~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 183#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 185#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;havoc main_#t~nondet2#1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 173#L26-2 [2024-11-19 14:13:29,208 INFO L747 eck$LassoCheckResult]: Loop: 173#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 174#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;havoc main_#t~nondet2#1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 173#L26-2 [2024-11-19 14:13:29,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:13:29,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1810722638, now seen corresponding path program 1 times [2024-11-19 14:13:29,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:13:29,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950066363] [2024-11-19 14:13:29,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:13:29,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:13:29,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:13:29,214 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:13:29,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:13:29,218 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:13:29,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:13:29,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 2 times [2024-11-19 14:13:29,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:13:29,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454929511] [2024-11-19 14:13:29,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:13:29,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:13:29,222 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:13:29,222 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-19 14:13:29,222 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:13:29,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:13:29,224 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:13:29,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:13:29,225 INFO L85 PathProgramCache]: Analyzing trace with hash 642700593, now seen corresponding path program 2 times [2024-11-19 14:13:29,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:13:29,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122716165] [2024-11-19 14:13:29,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:13:29,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:13:29,230 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:13:29,230 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-19 14:13:29,230 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:13:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:13:29,234 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:13:29,253 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 14:13:29,254 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 14:13:29,254 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 14:13:29,254 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 14:13:29,254 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-19 14:13:29,254 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:29,254 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 14:13:29,254 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 14:13:29,254 INFO L132 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration4_Loop [2024-11-19 14:13:29,254 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 14:13:29,254 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 14:13:29,255 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:29,257 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:29,258 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:29,264 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:29,292 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 14:13:29,292 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-19 14:13:29,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:29,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:29,294 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:29,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-11-19 14:13:29,296 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 14:13:29,297 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:13:29,314 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 14:13:29,314 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 14:13:29,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2024-11-19 14:13:29,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:29,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:29,326 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:29,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-11-19 14:13:29,329 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 14:13:29,329 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:13:29,340 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 14:13:29,340 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=0} Honda state: {ULTIMATE.start_main_#t~nondet2#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 14:13:29,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2024-11-19 14:13:29,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:29,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:29,352 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:29,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-11-19 14:13:29,354 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 14:13:29,354 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:13:29,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2024-11-19 14:13:29,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:29,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:29,382 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:29,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-11-19 14:13:29,385 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-19 14:13:29,385 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:13:29,412 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-19 14:13:29,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2024-11-19 14:13:29,417 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 14:13:29,417 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 14:13:29,417 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 14:13:29,417 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 14:13:29,417 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-19 14:13:29,417 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:29,417 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 14:13:29,417 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 14:13:29,417 INFO L132 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration4_Loop [2024-11-19 14:13:29,417 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 14:13:29,417 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 14:13:29,418 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:29,424 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:29,434 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:29,435 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:29,465 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 14:13:29,465 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-19 14:13:29,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:29,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:29,466 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:29,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2024-11-19 14:13:29,468 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 [2024-11-19 14:13:29,478 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 14:13:29,478 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 14:13:29,478 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 14:13:29,478 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 14:13:29,481 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-19 14:13:29,481 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-19 14:13:29,484 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 14:13:29,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2024-11-19 14:13:29,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:29,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:29,496 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:29,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2024-11-19 14:13:29,498 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 [2024-11-19 14:13:29,508 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 14:13:29,508 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 14:13:29,508 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 14:13:29,508 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 14:13:29,508 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 14:13:29,509 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 14:13:29,510 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 14:13:29,511 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-19 14:13:29,515 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-19 14:13:29,515 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-19 14:13:29,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:29,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:29,518 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:29,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2024-11-19 14:13:29,519 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-19 14:13:29,519 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-19 14:13:29,519 INFO L474 LassoAnalysis]: Proved termination. [2024-11-19 14:13:29,519 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0#1) = 1*ULTIMATE.start_main_~q~0#1 Supporting invariants [] [2024-11-19 14:13:29,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2024-11-19 14:13:29,530 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-19 14:13:29,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:13:29,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:13:29,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 14:13:29,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:13:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:13:29,558 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:13:29,558 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:13:29,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:13:29,572 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-19 14:13:29,573 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 17 transitions. cyclomatic complexity: 7 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:13:29,593 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 17 transitions. cyclomatic complexity: 7. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 28 states and 35 transitions. Complement of second has 5 states. [2024-11-19 14:13:29,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-19 14:13:29,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:13:29,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2024-11-19 14:13:29,594 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2024-11-19 14:13:29,594 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:13:29,594 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 2 letters. [2024-11-19 14:13:29,594 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:13:29,594 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 4 letters. [2024-11-19 14:13:29,594 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:13:29,594 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2024-11-19 14:13:29,595 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-19 14:13:29,596 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 24 states and 31 transitions. [2024-11-19 14:13:29,596 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2024-11-19 14:13:29,596 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2024-11-19 14:13:29,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 31 transitions. [2024-11-19 14:13:29,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-19 14:13:29,596 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 31 transitions. [2024-11-19 14:13:29,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 31 transitions. [2024-11-19 14:13:29,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2024-11-19 14:13:29,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 21 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:13:29,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2024-11-19 14:13:29,598 INFO L240 hiAutomatonCegarLoop]: Abstraction has 22 states and 29 transitions. [2024-11-19 14:13:29,598 INFO L425 stractBuchiCegarLoop]: Abstraction has 22 states and 29 transitions. [2024-11-19 14:13:29,598 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-11-19 14:13:29,598 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 29 transitions. [2024-11-19 14:13:29,598 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-19 14:13:29,598 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-19 14:13:29,598 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-19 14:13:29,599 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1] [2024-11-19 14:13:29,599 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-19 14:13:29,599 INFO L745 eck$LassoCheckResult]: Stem: 265#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 266#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;havoc main_#t~nondet0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 273#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 282#L23 assume !(main_~q~0#1 < main_~p~0#1); 277#L26 assume main_~p~0#1 < main_~q~0#1;main_~p~0#1 := main_~p~0#1 - 1;havoc main_#t~nondet3#1;main_~q~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 272#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 274#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;havoc main_#t~nondet2#1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 261#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 263#L23 assume !(main_~q~0#1 < main_~p~0#1); 267#L26 [2024-11-19 14:13:29,599 INFO L747 eck$LassoCheckResult]: Loop: 267#L26 assume main_~p~0#1 < main_~q~0#1;main_~p~0#1 := main_~p~0#1 - 1;havoc main_#t~nondet3#1;main_~q~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 270#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 278#L23 assume !(main_~q~0#1 < main_~p~0#1); 267#L26 [2024-11-19 14:13:29,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:13:29,624 INFO L85 PathProgramCache]: Analyzing trace with hash 642700595, now seen corresponding path program 3 times [2024-11-19 14:13:29,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:13:29,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191404666] [2024-11-19 14:13:29,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 14:13:29,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:13:29,643 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 14:13:29,643 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-19 14:13:29,643 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:13:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:13:29,648 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:13:29,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:13:29,649 INFO L85 PathProgramCache]: Analyzing trace with hash 48407, now seen corresponding path program 2 times [2024-11-19 14:13:29,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:13:29,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472085392] [2024-11-19 14:13:29,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:13:29,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:13:29,652 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:13:29,652 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-19 14:13:29,652 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:13:29,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:13:29,655 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:13:29,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:13:29,655 INFO L85 PathProgramCache]: Analyzing trace with hash -270761307, now seen corresponding path program 4 times [2024-11-19 14:13:29,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:13:29,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184579640] [2024-11-19 14:13:29,655 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 14:13:29,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:13:29,661 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 14:13:29,662 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-19 14:13:29,662 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:13:29,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:13:29,667 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:13:29,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2024-11-19 14:13:29,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2024-11-19 14:13:29,723 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 14:13:29,723 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 14:13:29,723 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 14:13:29,723 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 14:13:29,723 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-19 14:13:29,723 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:29,723 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 14:13:29,723 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 14:13:29,723 INFO L132 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration5_Loop [2024-11-19 14:13:29,723 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 14:13:29,723 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 14:13:29,724 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:29,728 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:29,736 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:29,738 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:29,804 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 14:13:29,804 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-19 14:13:29,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:29,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:29,806 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:29,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2024-11-19 14:13:29,814 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 14:13:29,814 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:13:29,833 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 14:13:29,833 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 14:13:29,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2024-11-19 14:13:29,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:29,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:29,845 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:29,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2024-11-19 14:13:29,849 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 14:13:29,849 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:13:29,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2024-11-19 14:13:29,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:29,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:29,872 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:29,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2024-11-19 14:13:29,874 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-19 14:13:29,874 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:13:29,947 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-19 14:13:29,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2024-11-19 14:13:29,952 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 14:13:29,952 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 14:13:29,952 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 14:13:29,952 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 14:13:29,952 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-19 14:13:29,952 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:29,952 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 14:13:29,953 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 14:13:29,953 INFO L132 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration5_Loop [2024-11-19 14:13:29,953 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 14:13:29,953 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 14:13:29,954 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:29,963 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:29,965 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:29,967 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:30,013 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 14:13:30,013 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-19 14:13:30,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:30,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:30,015 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:30,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2024-11-19 14:13:30,017 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 [2024-11-19 14:13:30,027 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 14:13:30,027 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 14:13:30,027 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 14:13:30,027 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 14:13:30,027 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 14:13:30,030 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 14:13:30,030 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 14:13:30,032 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-19 14:13:30,036 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-19 14:13:30,036 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-19 14:13:30,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:30,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:30,042 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:30,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2024-11-19 14:13:30,046 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-19 14:13:30,046 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-19 14:13:30,047 INFO L474 LassoAnalysis]: Proved termination. [2024-11-19 14:13:30,047 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~p~0#1) = 1*ULTIMATE.start_main_~p~0#1 Supporting invariants [] [2024-11-19 14:13:30,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2024-11-19 14:13:30,060 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-19 14:13:30,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:13:30,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:13:30,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 14:13:30,081 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:13:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:13:30,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:13:30,094 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:13:30,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:13:30,112 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 [2024-11-19 14:13:30,112 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 12 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:13:30,126 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 12. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 29 states and 36 transitions. Complement of second has 7 states. [2024-11-19 14:13:30,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-11-19 14:13:30,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:13:30,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2024-11-19 14:13:30,127 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 9 letters. Loop has 3 letters. [2024-11-19 14:13:30,128 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:13:30,128 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-19 14:13:30,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:13:30,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:13:30,141 INFO L255 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 14:13:30,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:13:30,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:13:30,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:13:30,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:13:30,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:13:30,172 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2024-11-19 14:13:30,172 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 12 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:13:30,190 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 12. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 26 states and 35 transitions. Complement of second has 7 states. [2024-11-19 14:13:30,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-11-19 14:13:30,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:13:30,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2024-11-19 14:13:30,192 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 9 letters. Loop has 3 letters. [2024-11-19 14:13:30,192 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:13:30,192 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-19 14:13:30,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:13:30,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:13:30,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 14:13:30,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:13:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:13:30,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:13:30,221 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:13:30,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:13:30,239 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2024-11-19 14:13:30,239 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 12 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:13:30,254 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 12. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 35 states and 43 transitions. Complement of second has 6 states. [2024-11-19 14:13:30,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-11-19 14:13:30,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:13:30,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2024-11-19 14:13:30,255 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 9 letters. Loop has 3 letters. [2024-11-19 14:13:30,255 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:13:30,255 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 12 letters. Loop has 3 letters. [2024-11-19 14:13:30,255 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:13:30,256 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 9 letters. Loop has 6 letters. [2024-11-19 14:13:30,256 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:13:30,256 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 43 transitions. [2024-11-19 14:13:30,257 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2024-11-19 14:13:30,257 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 26 states and 34 transitions. [2024-11-19 14:13:30,257 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2024-11-19 14:13:30,257 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2024-11-19 14:13:30,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 34 transitions. [2024-11-19 14:13:30,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-19 14:13:30,258 INFO L218 hiAutomatonCegarLoop]: Abstraction has 26 states and 34 transitions. [2024-11-19 14:13:30,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 34 transitions. [2024-11-19 14:13:30,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 17. [2024-11-19 14:13:30,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:13:30,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2024-11-19 14:13:30,259 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 22 transitions. [2024-11-19 14:13:30,259 INFO L425 stractBuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2024-11-19 14:13:30,259 INFO L332 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-11-19 14:13:30,260 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 22 transitions. [2024-11-19 14:13:30,260 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2024-11-19 14:13:30,260 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-19 14:13:30,260 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-19 14:13:30,260 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2024-11-19 14:13:30,260 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1] [2024-11-19 14:13:30,261 INFO L745 eck$LassoCheckResult]: Stem: 530#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 531#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;havoc main_#t~nondet0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 522#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 524#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;havoc main_#t~nondet2#1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 529#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 527#L23 assume !(main_~q~0#1 < main_~p~0#1); 528#L26 [2024-11-19 14:13:30,261 INFO L747 eck$LassoCheckResult]: Loop: 528#L26 assume main_~p~0#1 < main_~q~0#1;main_~p~0#1 := main_~p~0#1 - 1;havoc main_#t~nondet3#1;main_~q~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 525#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 526#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;havoc main_#t~nondet2#1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 536#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 535#L23 assume !(main_~q~0#1 < main_~p~0#1); 528#L26 [2024-11-19 14:13:30,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:13:30,261 INFO L85 PathProgramCache]: Analyzing trace with hash 889692235, now seen corresponding path program 1 times [2024-11-19 14:13:30,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:13:30,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563018324] [2024-11-19 14:13:30,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:13:30,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:13:30,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:13:30,266 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:13:30,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:13:30,270 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:13:30,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:13:30,271 INFO L85 PathProgramCache]: Analyzing trace with hash 46517562, now seen corresponding path program 1 times [2024-11-19 14:13:30,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:13:30,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386728185] [2024-11-19 14:13:30,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:13:30,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:13:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:13:30,276 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:13:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:13:30,279 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:13:30,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:13:30,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1606994736, now seen corresponding path program 5 times [2024-11-19 14:13:30,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:13:30,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956087327] [2024-11-19 14:13:30,280 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 14:13:30,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:13:30,286 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-19 14:13:30,287 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-19 14:13:30,287 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:13:30,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:13:30,295 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:13:30,338 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 14:13:30,339 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 14:13:30,339 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 14:13:30,339 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 14:13:30,339 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-19 14:13:30,339 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:30,339 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 14:13:30,339 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 14:13:30,339 INFO L132 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration6_Loop [2024-11-19 14:13:30,339 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 14:13:30,339 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 14:13:30,340 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:30,350 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:30,352 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:30,354 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:30,357 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:30,410 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 14:13:30,411 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-19 14:13:30,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:30,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:30,412 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:30,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2024-11-19 14:13:30,414 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 14:13:30,414 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:13:30,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2024-11-19 14:13:30,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:30,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:30,445 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:30,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2024-11-19 14:13:30,451 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-19 14:13:30,451 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:13:30,540 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-19 14:13:30,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2024-11-19 14:13:30,546 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 14:13:30,546 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 14:13:30,546 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 14:13:30,547 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 14:13:30,547 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-19 14:13:30,547 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:30,547 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 14:13:30,547 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 14:13:30,547 INFO L132 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration6_Loop [2024-11-19 14:13:30,547 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 14:13:30,547 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 14:13:30,548 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:30,549 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:30,558 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:30,560 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:30,562 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:30,615 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 14:13:30,616 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-19 14:13:30,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:30,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:30,617 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:30,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2024-11-19 14:13:30,618 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 [2024-11-19 14:13:30,629 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 14:13:30,629 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 14:13:30,629 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 14:13:30,629 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 14:13:30,630 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 14:13:30,635 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 14:13:30,635 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 14:13:30,636 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 14:13:30,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2024-11-19 14:13:30,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:30,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:30,651 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:30,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2024-11-19 14:13:30,657 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 [2024-11-19 14:13:30,667 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 14:13:30,667 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 14:13:30,667 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 14:13:30,667 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 14:13:30,667 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 14:13:30,668 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 14:13:30,668 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 14:13:30,677 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-19 14:13:30,681 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-19 14:13:30,681 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-19 14:13:30,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:30,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:30,683 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:30,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2024-11-19 14:13:30,684 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-19 14:13:30,684 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-19 14:13:30,684 INFO L474 LassoAnalysis]: Proved termination. [2024-11-19 14:13:30,684 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0#1) = 1*ULTIMATE.start_main_~q~0#1 Supporting invariants [] [2024-11-19 14:13:30,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2024-11-19 14:13:30,696 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-19 14:13:30,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:13:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:13:30,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 14:13:30,710 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:13:30,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:13:30,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 14:13:30,721 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:13:30,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:13:30,751 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2024-11-19 14:13:30,751 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8 Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:13:30,777 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 45 states and 62 transitions. Complement of second has 8 states. [2024-11-19 14:13:30,777 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 [2024-11-19 14:13:30,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:13:30,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2024-11-19 14:13:30,778 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 6 letters. Loop has 5 letters. [2024-11-19 14:13:30,778 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:13:30,778 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 11 letters. Loop has 5 letters. [2024-11-19 14:13:30,778 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:13:30,778 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 6 letters. Loop has 10 letters. [2024-11-19 14:13:30,779 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:13:30,779 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 62 transitions. [2024-11-19 14:13:30,779 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-19 14:13:30,780 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 29 states and 38 transitions. [2024-11-19 14:13:30,780 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2024-11-19 14:13:30,780 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2024-11-19 14:13:30,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 38 transitions. [2024-11-19 14:13:30,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-19 14:13:30,780 INFO L218 hiAutomatonCegarLoop]: Abstraction has 29 states and 38 transitions. [2024-11-19 14:13:30,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 38 transitions. [2024-11-19 14:13:30,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2024-11-19 14:13:30,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:13:30,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2024-11-19 14:13:30,782 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 32 transitions. [2024-11-19 14:13:30,782 INFO L425 stractBuchiCegarLoop]: Abstraction has 24 states and 32 transitions. [2024-11-19 14:13:30,782 INFO L332 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2024-11-19 14:13:30,782 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 32 transitions. [2024-11-19 14:13:30,782 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-19 14:13:30,782 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-19 14:13:30,782 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-19 14:13:30,782 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 1, 1, 1, 1] [2024-11-19 14:13:30,782 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-19 14:13:30,782 INFO L745 eck$LassoCheckResult]: Stem: 653#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 654#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;havoc main_#t~nondet0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 644#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 646#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;havoc main_#t~nondet2#1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 660#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 658#L23 assume !(main_~q~0#1 < main_~p~0#1); 659#L26 assume main_~p~0#1 < main_~q~0#1;main_~p~0#1 := main_~p~0#1 - 1;havoc main_#t~nondet3#1;main_~q~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 665#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 664#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;havoc main_#t~nondet2#1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 663#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 661#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;havoc main_#t~nondet2#1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 650#L26-2 [2024-11-19 14:13:30,783 INFO L747 eck$LassoCheckResult]: Loop: 650#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 649#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;havoc main_#t~nondet2#1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 650#L26-2 [2024-11-19 14:13:30,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:13:30,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1606994734, now seen corresponding path program 6 times [2024-11-19 14:13:30,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:13:30,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306268503] [2024-11-19 14:13:30,783 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 14:13:30,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:13:30,788 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-19 14:13:30,788 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-19 14:13:30,789 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:13:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:13:30,793 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:13:30,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:13:30,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 3 times [2024-11-19 14:13:30,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:13:30,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335579793] [2024-11-19 14:13:30,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 14:13:30,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:13:30,795 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 14:13:30,796 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-19 14:13:30,796 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:13:30,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:13:30,797 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:13:30,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:13:30,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1866286831, now seen corresponding path program 7 times [2024-11-19 14:13:30,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:13:30,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508959327] [2024-11-19 14:13:30,798 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 14:13:30,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:13:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:13:30,802 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:13:30,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:13:30,807 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:13:30,825 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 14:13:30,825 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 14:13:30,825 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 14:13:30,825 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 14:13:30,825 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-19 14:13:30,825 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:30,825 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 14:13:30,825 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 14:13:30,825 INFO L132 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration7_Loop [2024-11-19 14:13:30,825 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 14:13:30,825 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 14:13:30,826 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:30,828 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:30,830 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:30,835 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:30,861 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 14:13:30,861 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-19 14:13:30,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:30,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:30,863 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:30,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2024-11-19 14:13:30,867 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 14:13:30,867 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:13:30,885 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 14:13:30,885 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 14:13:30,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2024-11-19 14:13:30,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:30,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:30,898 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:30,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2024-11-19 14:13:30,900 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 14:13:30,900 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:13:30,918 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 14:13:30,918 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 14:13:30,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2024-11-19 14:13:30,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:30,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:30,931 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:30,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2024-11-19 14:13:30,932 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 14:13:30,932 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:13:30,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2024-11-19 14:13:30,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:30,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:30,955 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:30,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2024-11-19 14:13:30,957 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-19 14:13:30,957 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:13:30,986 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-19 14:13:30,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2024-11-19 14:13:30,991 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 14:13:30,991 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 14:13:30,991 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 14:13:30,991 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 14:13:30,991 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-19 14:13:30,991 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:30,991 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 14:13:30,991 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 14:13:30,991 INFO L132 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration7_Loop [2024-11-19 14:13:30,991 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 14:13:30,991 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 14:13:30,992 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:30,998 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:31,001 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:31,003 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:13:31,028 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 14:13:31,028 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-19 14:13:31,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:31,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:31,030 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:31,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2024-11-19 14:13:31,032 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 [2024-11-19 14:13:31,041 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 14:13:31,042 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 14:13:31,042 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 14:13:31,042 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 14:13:31,042 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 14:13:31,042 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 14:13:31,042 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 14:13:31,044 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-19 14:13:31,045 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-11-19 14:13:31,046 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-19 14:13:31,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:13:31,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:13:31,047 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:13:31,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2024-11-19 14:13:31,052 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-19 14:13:31,052 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-19 14:13:31,052 INFO L474 LassoAnalysis]: Proved termination. [2024-11-19 14:13:31,052 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0#1) = 1*ULTIMATE.start_main_~q~0#1 Supporting invariants [] [2024-11-19 14:13:31,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2024-11-19 14:13:31,064 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-19 14:13:31,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:13:31,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:13:31,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 14:13:31,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:13:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:13:31,092 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:13:31,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:13:31,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:13:31,101 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-19 14:13:31,101 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 13 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:13:31,113 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 13. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 32 states and 40 transitions. Complement of second has 5 states. [2024-11-19 14:13:31,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-19 14:13:31,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:13:31,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2024-11-19 14:13:31,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 11 letters. Loop has 2 letters. [2024-11-19 14:13:31,114 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:13:31,114 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-19 14:13:31,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:13:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:13:31,127 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 14:13:31,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:13:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:13:31,140 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:13:31,140 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:13:31,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:13:31,149 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-19 14:13:31,149 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 13 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:13:31,159 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 13. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 32 states and 40 transitions. Complement of second has 5 states. [2024-11-19 14:13:31,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-19 14:13:31,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:13:31,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2024-11-19 14:13:31,160 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 11 letters. Loop has 2 letters. [2024-11-19 14:13:31,160 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:13:31,160 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-19 14:13:31,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:13:31,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:13:31,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 14:13:31,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:13:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:13:31,187 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:13:31,187 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:13:31,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:13:31,196 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-19 14:13:31,196 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 13 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:13:31,208 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 13. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 36 states and 47 transitions. Complement of second has 4 states. [2024-11-19 14:13:31,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-19 14:13:31,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:13:31,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2024-11-19 14:13:31,209 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 11 letters. Loop has 2 letters. [2024-11-19 14:13:31,209 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:13:31,209 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 13 letters. Loop has 2 letters. [2024-11-19 14:13:31,209 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:13:31,209 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 11 letters. Loop has 4 letters. [2024-11-19 14:13:31,209 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:13:31,209 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 47 transitions. [2024-11-19 14:13:31,210 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-19 14:13:31,210 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 0 states and 0 transitions. [2024-11-19 14:13:31,210 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-19 14:13:31,210 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-19 14:13:31,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-19 14:13:31,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-19 14:13:31,210 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-19 14:13:31,210 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-19 14:13:31,210 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-19 14:13:31,210 INFO L332 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2024-11-19 14:13:31,210 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-11-19 14:13:31,210 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-19 14:13:31,210 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-11-19 14:13:31,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 02:13:31 BoogieIcfgContainer [2024-11-19 14:13:31,216 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-19 14:13:31,216 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 14:13:31,216 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 14:13:31,217 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 14:13:31,217 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:13:27" (3/4) ... [2024-11-19 14:13:31,218 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-19 14:13:31,219 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 14:13:31,220 INFO L158 Benchmark]: Toolchain (without parser) took 4162.50ms. Allocated memory was 169.9MB in the beginning and 228.6MB in the end (delta: 58.7MB). Free memory was 101.7MB in the beginning and 81.0MB in the end (delta: 20.7MB). Peak memory consumption was 79.8MB. Max. memory is 16.1GB. [2024-11-19 14:13:31,220 INFO L158 Benchmark]: CDTParser took 0.56ms. Allocated memory is still 169.9MB. Free memory was 130.0MB in the beginning and 129.9MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 14:13:31,220 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.47ms. Allocated memory is still 169.9MB. Free memory was 101.5MB in the beginning and 142.5MB in the end (delta: -41.0MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2024-11-19 14:13:31,220 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.28ms. Allocated memory is still 169.9MB. Free memory was 142.5MB in the beginning and 141.6MB in the end (delta: 856.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 14:13:31,220 INFO L158 Benchmark]: Boogie Preprocessor took 19.42ms. Allocated memory is still 169.9MB. Free memory was 140.8MB in the beginning and 139.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 14:13:31,221 INFO L158 Benchmark]: RCFGBuilder took 179.82ms. Allocated memory is still 169.9MB. Free memory was 139.5MB in the beginning and 131.1MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-19 14:13:31,221 INFO L158 Benchmark]: BuchiAutomizer took 3739.50ms. Allocated memory was 169.9MB in the beginning and 228.6MB in the end (delta: 58.7MB). Free memory was 130.2MB in the beginning and 81.0MB in the end (delta: 49.3MB). Peak memory consumption was 107.6MB. Max. memory is 16.1GB. [2024-11-19 14:13:31,221 INFO L158 Benchmark]: Witness Printer took 3.00ms. Allocated memory is still 228.6MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 14:13:31,222 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56ms. Allocated memory is still 169.9MB. Free memory was 130.0MB in the beginning and 129.9MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 194.47ms. Allocated memory is still 169.9MB. Free memory was 101.5MB in the beginning and 142.5MB in the end (delta: -41.0MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.28ms. Allocated memory is still 169.9MB. Free memory was 142.5MB in the beginning and 141.6MB in the end (delta: 856.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.42ms. Allocated memory is still 169.9MB. Free memory was 140.8MB in the beginning and 139.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 179.82ms. Allocated memory is still 169.9MB. Free memory was 139.5MB in the beginning and 131.1MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 3739.50ms. Allocated memory was 169.9MB in the beginning and 228.6MB in the end (delta: 58.7MB). Free memory was 130.2MB in the beginning and 81.0MB in the end (delta: 49.3MB). Peak memory consumption was 107.6MB. Max. memory is 16.1GB. * Witness Printer took 3.00ms. Allocated memory is still 228.6MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (1 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has affine ranking function q and consists of 4 locations. One deterministic module has affine ranking function p and consists of 4 locations. One deterministic module has affine ranking function q and consists of 3 locations. One deterministic module has affine ranking function q and consists of 5 locations. One nondeterministic module has affine ranking function p and consists of 4 locations. One nondeterministic module has affine ranking function q and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.6s and 8 iterations. TraceHistogramMax:4. Analysis of lassos took 2.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 19 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 [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 76 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 66 mSDsluCounter, 58 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 122 IncrementalHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 57 mSDtfsCounter, 122 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT6 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax165 hnf100 lsp60 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq141 hnf96 smp87 dnf100 smp100 tf109 neg100 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 34ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-11-19 14:13:31,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2024-11-19 14:13:31,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2024-11-19 14:13:31,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2024-11-19 14:13:31,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE