./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 023d838f 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-lit/CookSeeZuleger-TACAS2013-Fig8a.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 bb3f76d55016616b178303c0eddf93fcbee588d4887c9917c414ed1a56e984ba --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:33:12,851 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:33:12,919 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-10 22:33:12,929 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:33:12,929 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:33:12,929 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.Remove goto edges from RCFG [2024-11-10 22:33:12,955 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:33:12,956 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:33:12,956 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:33:12,956 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:33:12,956 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:33:12,957 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:33:12,957 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:33:12,957 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:33:12,957 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-10 22:33:12,958 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-10 22:33:12,958 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-10 22:33:12,960 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-10 22:33:12,961 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-10 22:33:12,961 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-10 22:33:12,963 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:33:12,963 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-10 22:33:12,963 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:33:12,963 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:33:12,964 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-10 22:33:12,964 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-10 22:33:12,964 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-10 22:33:12,964 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:33:12,964 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:33:12,964 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:33:12,964 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-10 22:33:12,965 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:33:12,965 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:33:12,965 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:33:12,965 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:33:12,965 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:33:12,966 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-10 22:33:12,966 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb3f76d55016616b178303c0eddf93fcbee588d4887c9917c414ed1a56e984ba [2024-11-10 22:33:13,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:33:13,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:33:13,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:33:13,166 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:33:13,167 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:33:13,168 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c [2024-11-10 22:33:14,468 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:33:14,650 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:33:14,651 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c [2024-11-10 22:33:14,659 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c87440283/ebf8ac87e6b74574a7b4733174cfc376/FLAG65fd8cdbf [2024-11-10 22:33:14,673 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c87440283/ebf8ac87e6b74574a7b4733174cfc376 [2024-11-10 22:33:14,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:33:14,677 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:33:14,680 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:33:14,680 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:33:14,688 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:33:14,689 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:33:14" (1/1) ... [2024-11-10 22:33:14,690 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d8f620f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:14, skipping insertion in model container [2024-11-10 22:33:14,690 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:33:14" (1/1) ... [2024-11-10 22:33:14,720 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:33:14,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:33:14,860 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:33:14,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:33:14,897 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:33:14,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:14 WrapperNode [2024-11-10 22:33:14,898 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:33:14,899 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:33:14,899 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:33:14,899 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:33:14,904 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:14" (1/1) ... [2024-11-10 22:33:14,907 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:14" (1/1) ... [2024-11-10 22:33:14,929 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 14 [2024-11-10 22:33:14,929 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:33:14,930 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:33:14,930 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:33:14,930 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:33:14,937 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:14" (1/1) ... [2024-11-10 22:33:14,937 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:14" (1/1) ... [2024-11-10 22:33:14,938 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:14" (1/1) ... [2024-11-10 22:33:14,942 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-10 22:33:14,942 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:14" (1/1) ... [2024-11-10 22:33:14,942 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:14" (1/1) ... [2024-11-10 22:33:14,944 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:14" (1/1) ... [2024-11-10 22:33:14,944 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:14" (1/1) ... [2024-11-10 22:33:14,944 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:14" (1/1) ... [2024-11-10 22:33:14,945 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:14" (1/1) ... [2024-11-10 22:33:14,945 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:33:14,946 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:33:14,946 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:33:14,946 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:33:14,946 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:14" (1/1) ... [2024-11-10 22:33:14,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:14,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:14,986 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) [2024-11-10 22:33:14,988 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 [2024-11-10 22:33:15,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:33:15,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:33:15,089 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:33:15,095 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:33:15,148 INFO L? ?]: Removed 3 outVars from TransFormulas that were not future-live. [2024-11-10 22:33:15,148 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:33:15,156 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:33:15,156 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:33:15,156 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:33:15 BoogieIcfgContainer [2024-11-10 22:33:15,157 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:33:15,157 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-10 22:33:15,157 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-10 22:33:15,160 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-10 22:33:15,161 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-10 22:33:15,161 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 10.11 10:33:14" (1/3) ... [2024-11-10 22:33:15,162 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@f2e8bf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 10:33:15, skipping insertion in model container [2024-11-10 22:33:15,162 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-10 22:33:15,162 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:14" (2/3) ... [2024-11-10 22:33:15,162 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@f2e8bf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 10:33:15, skipping insertion in model container [2024-11-10 22:33:15,162 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-10 22:33:15,163 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:33:15" (3/3) ... [2024-11-10 22:33:15,163 INFO L332 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8a.c [2024-11-10 22:33:15,206 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-10 22:33:15,206 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-10 22:33:15,207 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-10 22:33:15,207 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-10 22:33:15,207 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-10 22:33:15,207 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-10 22:33:15,207 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-10 22:33:15,208 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-10 22:33:15,211 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 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) [2024-11-10 22:33:15,230 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-10 22:33:15,230 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-10 22:33:15,234 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-10 22:33:15,238 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-10 22:33:15,238 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-10 22:33:15,241 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-10 22:33:15,241 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 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) [2024-11-10 22:33:15,242 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-10 22:33:15,242 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-10 22:33:15,242 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-10 22:33:15,242 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-10 22:33:15,242 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-10 22:33:15,255 INFO L745 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#ULTIMATE.init_returnLabel#1true assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 2#L16true [2024-11-10 22:33:15,256 INFO L747 eck$LassoCheckResult]: Loop: 2#L16true assume true; 4#L16-1true assume !!(0 != main_~x~0#1); 5#L17true assume main_~x~0#1 > 0;main_~x~0#1 := main_~x~0#1 - 1; 2#L16true [2024-11-10 22:33:15,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:33:15,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1280, now seen corresponding path program 1 times [2024-11-10 22:33:15,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:33:15,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090386042] [2024-11-10 22:33:15,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:33:15,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:33:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:15,337 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:33:15,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:15,348 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:33:15,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:33:15,351 INFO L85 PathProgramCache]: Analyzing trace with hash 36707, now seen corresponding path program 1 times [2024-11-10 22:33:15,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:33:15,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843730061] [2024-11-10 22:33:15,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:33:15,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:33:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:15,362 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:33:15,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:15,368 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:33:15,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:33:15,369 INFO L85 PathProgramCache]: Analyzing trace with hash 38139396, now seen corresponding path program 1 times [2024-11-10 22:33:15,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:33:15,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997861156] [2024-11-10 22:33:15,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:33:15,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:33:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:15,379 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:33:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:15,382 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:33:15,425 INFO L204 LassoAnalysis]: Preferences: [2024-11-10 22:33:15,426 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-10 22:33:15,426 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-10 22:33:15,426 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-10 22:33:15,426 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-10 22:33:15,426 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:15,427 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-10 22:33:15,427 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-10 22:33:15,427 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration1_Loop [2024-11-10 22:33:15,427 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-10 22:33:15,427 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-10 22:33:15,438 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:15,446 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:15,451 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:15,497 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-10 22:33:15,498 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-10 22:33:15,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:15,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:15,501 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) [2024-11-10 22:33:15,503 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 [2024-11-10 22:33:15,504 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-10 22:33:15,504 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:33:15,528 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-10 22:33:15,529 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: [] [2024-11-10 22:33:15,539 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 [2024-11-10 22:33:15,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:15,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:15,543 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) [2024-11-10 22:33:15,544 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 [2024-11-10 22:33:15,546 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-10 22:33:15,546 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:33:15,565 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-10 22:33:15,565 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: [] [2024-11-10 22:33:15,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2024-11-10 22:33:15,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:15,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:15,577 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) [2024-11-10 22:33:15,578 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 [2024-11-10 22:33:15,583 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-10 22:33:15,583 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:33:15,606 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 [2024-11-10 22:33:15,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:15,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:15,611 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) [2024-11-10 22:33:15,612 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 [2024-11-10 22:33:15,613 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-10 22:33:15,613 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:33:15,640 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-10 22:33:15,645 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 [2024-11-10 22:33:15,645 INFO L204 LassoAnalysis]: Preferences: [2024-11-10 22:33:15,645 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-10 22:33:15,645 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-10 22:33:15,645 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-10 22:33:15,645 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-10 22:33:15,646 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:15,646 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-10 22:33:15,646 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-10 22:33:15,646 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration1_Loop [2024-11-10 22:33:15,646 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-10 22:33:15,646 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-10 22:33:15,647 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:15,652 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:15,656 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:15,687 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-10 22:33:15,691 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-10 22:33:15,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:15,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:15,693 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) [2024-11-10 22:33:15,694 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 [2024-11-10 22:33:15,695 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 [2024-11-10 22:33:15,705 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 22:33:15,706 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 22:33:15,706 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 22:33:15,706 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 22:33:15,709 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-10 22:33:15,709 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-10 22:33:15,713 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-10 22:33:15,723 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 [2024-11-10 22:33:15,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:15,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:15,725 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) [2024-11-10 22:33:15,726 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 [2024-11-10 22:33:15,727 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 [2024-11-10 22:33:15,736 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 22:33:15,737 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 22:33:15,737 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 22:33:15,737 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 22:33:15,739 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-10 22:33:15,739 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-10 22:33:15,743 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-10 22:33:15,753 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 [2024-11-10 22:33:15,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:15,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:15,755 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) [2024-11-10 22:33:15,756 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 [2024-11-10 22:33:15,757 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 [2024-11-10 22:33:15,766 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 22:33:15,767 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-10 22:33:15,767 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 22:33:15,767 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 22:33:15,767 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 22:33:15,768 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-10 22:33:15,768 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-10 22:33:15,770 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-10 22:33:15,773 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-10 22:33:15,773 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-10 22:33:15,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:15,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:15,776 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) [2024-11-10 22:33:15,777 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 [2024-11-10 22:33:15,780 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-10 22:33:15,781 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-10 22:33:15,781 INFO L474 LassoAnalysis]: Proved termination. [2024-11-10 22:33:15,781 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2024-11-10 22:33:15,791 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 [2024-11-10 22:33:15,794 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-10 22:33:15,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:33:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:33:15,815 WARN L253 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 22:33:15,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:33:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:33:15,823 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:33:15,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:33:15,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:33:15,847 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2024-11-10 22:33:15,849 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 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 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:33:15,875 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 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 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 19 states and 25 transitions. Complement of second has 6 states. [2024-11-10 22:33:15,877 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 [2024-11-10 22:33:15,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:33:15,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2024-11-10 22:33:15,882 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 2 letters. Loop has 3 letters. [2024-11-10 22:33:15,882 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:33:15,882 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 3 letters. [2024-11-10 22:33:15,882 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:33:15,882 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 2 letters. Loop has 6 letters. [2024-11-10 22:33:15,882 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:33:15,883 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 25 transitions. [2024-11-10 22:33:15,884 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-10 22:33:15,887 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 11 states and 14 transitions. [2024-11-10 22:33:15,887 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2024-11-10 22:33:15,888 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2024-11-10 22:33:15,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2024-11-10 22:33:15,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-10 22:33:15,888 INFO L218 hiAutomatonCegarLoop]: Abstraction has 11 states and 14 transitions. [2024-11-10 22:33:15,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2024-11-10 22:33:15,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2024-11-10 22:33:15,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 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) [2024-11-10 22:33:15,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2024-11-10 22:33:15,905 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11 states and 14 transitions. [2024-11-10 22:33:15,905 INFO L425 stractBuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2024-11-10 22:33:15,906 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-10 22:33:15,906 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2024-11-10 22:33:15,906 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-10 22:33:15,906 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-10 22:33:15,906 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-10 22:33:15,907 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2024-11-10 22:33:15,907 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-10 22:33:15,907 INFO L745 eck$LassoCheckResult]: Stem: 73#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 74#ULTIMATE.init_returnLabel#1 assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 75#L16 assume true; 70#L16-1 assume !!(0 != main_~x~0#1); 71#L17 assume !(main_~x~0#1 > 0);main_~x~0#1 := 1 + main_~x~0#1; 66#L16 [2024-11-10 22:33:15,907 INFO L747 eck$LassoCheckResult]: Loop: 66#L16 assume true; 67#L16-1 assume !!(0 != main_~x~0#1); 76#L17 assume main_~x~0#1 > 0;main_~x~0#1 := main_~x~0#1 - 1; 66#L16 [2024-11-10 22:33:15,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:33:15,910 INFO L85 PathProgramCache]: Analyzing trace with hash 38139397, now seen corresponding path program 1 times [2024-11-10 22:33:15,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:33:15,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980111479] [2024-11-10 22:33:15,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:33:15,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:33:15,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:15,917 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:33:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:15,922 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:33:15,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:33:15,922 INFO L85 PathProgramCache]: Analyzing trace with hash 36707, now seen corresponding path program 2 times [2024-11-10 22:33:15,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:33:15,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894233066] [2024-11-10 22:33:15,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:33:15,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:33:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:15,927 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:33:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:15,931 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:33:15,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:33:15,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1955550497, now seen corresponding path program 1 times [2024-11-10 22:33:15,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:33:15,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608614302] [2024-11-10 22:33:15,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:33:15,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:33:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:33:15,995 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 [2024-11-10 22:33:16,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:33:16,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:33:16,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608614302] [2024-11-10 22:33:16,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608614302] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:33:16,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218401552] [2024-11-10 22:33:16,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:33:16,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:33:16,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:16,085 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:33:16,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 22:33:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:33:16,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:33:16,110 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:33:16,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:33:16,148 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:33:16,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:33:16,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218401552] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:33:16,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:33:16,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-10 22:33:16,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267362624] [2024-11-10 22:33:16,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:33:16,176 INFO L204 LassoAnalysis]: Preferences: [2024-11-10 22:33:16,176 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-10 22:33:16,176 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-10 22:33:16,176 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-10 22:33:16,176 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-10 22:33:16,176 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:16,176 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-10 22:33:16,176 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-10 22:33:16,176 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration2_Loop [2024-11-10 22:33:16,177 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-10 22:33:16,177 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-10 22:33:16,177 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:16,180 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:16,182 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:16,209 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-10 22:33:16,209 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-10 22:33:16,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:16,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:16,211 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) [2024-11-10 22:33:16,212 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 [2024-11-10 22:33:16,213 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-10 22:33:16,213 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:33:16,231 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-10 22:33:16,231 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: [] [2024-11-10 22:33:16,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2024-11-10 22:33:16,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:16,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:16,249 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) [2024-11-10 22:33:16,250 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 [2024-11-10 22:33:16,251 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-10 22:33:16,251 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:33:16,269 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-10 22:33:16,270 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-10 22:33:16,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2024-11-10 22:33:16,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:16,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:16,283 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) [2024-11-10 22:33:16,285 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 [2024-11-10 22:33:16,285 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-10 22:33:16,286 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:33:16,308 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 [2024-11-10 22:33:16,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:16,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:16,310 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) [2024-11-10 22:33:16,311 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 [2024-11-10 22:33:16,315 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-10 22:33:16,315 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:33:16,341 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-10 22:33:16,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2024-11-10 22:33:16,346 INFO L204 LassoAnalysis]: Preferences: [2024-11-10 22:33:16,346 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-10 22:33:16,346 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-10 22:33:16,346 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-10 22:33:16,346 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-10 22:33:16,346 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:16,346 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-10 22:33:16,346 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-10 22:33:16,346 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration2_Loop [2024-11-10 22:33:16,346 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-10 22:33:16,346 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-10 22:33:16,347 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:16,353 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:16,363 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:16,390 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-10 22:33:16,390 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-10 22:33:16,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:16,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:16,393 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) [2024-11-10 22:33:16,401 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 [2024-11-10 22:33:16,402 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 [2024-11-10 22:33:16,412 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 22:33:16,413 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 22:33:16,413 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 22:33:16,413 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 22:33:16,415 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-10 22:33:16,415 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-10 22:33:16,418 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-10 22:33:16,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2024-11-10 22:33:16,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:16,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:16,432 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) [2024-11-10 22:33:16,434 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 [2024-11-10 22:33:16,435 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-10 22:33:16,445 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 22:33:16,445 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-10 22:33:16,445 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 22:33:16,445 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 22:33:16,445 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 22:33:16,446 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-10 22:33:16,446 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-10 22:33:16,449 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-10 22:33:16,451 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-10 22:33:16,451 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-10 22:33:16,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:16,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:16,453 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) [2024-11-10 22:33:16,456 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 [2024-11-10 22:33:16,456 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-10 22:33:16,457 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-10 22:33:16,457 INFO L474 LassoAnalysis]: Proved termination. [2024-11-10 22:33:16,457 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2024-11-10 22:33:16,467 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 [2024-11-10 22:33:16,469 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-10 22:33:16,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:33:16,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:33:16,495 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 22:33:16,495 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:33:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:33:16,513 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:33:16,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:33:16,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:33:16,521 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2024-11-10 22:33:16,522 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5 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) [2024-11-10 22:33:16,533 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5. 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 17 states and 22 transitions. Complement of second has 5 states. [2024-11-10 22:33:16,534 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 [2024-11-10 22:33:16,534 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) [2024-11-10 22:33:16,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2024-11-10 22:33:16,535 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 3 letters. [2024-11-10 22:33:16,535 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:33:16,535 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 3 letters. [2024-11-10 22:33:16,535 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:33:16,535 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 6 letters. [2024-11-10 22:33:16,535 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:33:16,536 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 22 transitions. [2024-11-10 22:33:16,536 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-10 22:33:16,536 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 22 transitions. [2024-11-10 22:33:16,537 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2024-11-10 22:33:16,537 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2024-11-10 22:33:16,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 22 transitions. [2024-11-10 22:33:16,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-10 22:33:16,537 INFO L218 hiAutomatonCegarLoop]: Abstraction has 17 states and 22 transitions. [2024-11-10 22:33:16,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 22 transitions. [2024-11-10 22:33:16,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-10 22:33:16,542 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) [2024-11-10 22:33:16,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2024-11-10 22:33:16,543 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 22 transitions. [2024-11-10 22:33:16,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:33:16,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:33:16,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:33:16,550 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2024-11-10 22:33:16,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 22:33:16,578 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2024-11-10 22:33:16,578 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 18 transitions. [2024-11-10 22:33:16,580 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-10 22:33:16,580 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 16 transitions. [2024-11-10 22:33:16,580 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2024-11-10 22:33:16,580 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2024-11-10 22:33:16,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 16 transitions. [2024-11-10 22:33:16,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-10 22:33:16,581 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 16 transitions. [2024-11-10 22:33:16,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 16 transitions. [2024-11-10 22:33:16,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 9. [2024-11-10 22:33:16,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 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) [2024-11-10 22:33:16,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2024-11-10 22:33:16,582 INFO L240 hiAutomatonCegarLoop]: Abstraction has 9 states and 11 transitions. [2024-11-10 22:33:16,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:33:16,583 INFO L425 stractBuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2024-11-10 22:33:16,583 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-10 22:33:16,583 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 11 transitions. [2024-11-10 22:33:16,583 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-10 22:33:16,583 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-10 22:33:16,583 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-10 22:33:16,584 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-10 22:33:16,584 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-10 22:33:16,584 INFO L745 eck$LassoCheckResult]: Stem: 222#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 223#ULTIMATE.init_returnLabel#1 assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 224#L16 assume true; 217#L16-1 [2024-11-10 22:33:16,584 INFO L747 eck$LassoCheckResult]: Loop: 217#L16-1 assume !!(0 != main_~x~0#1); 220#L17 assume !(main_~x~0#1 > 0);main_~x~0#1 := 1 + main_~x~0#1; 216#L16 assume true; 217#L16-1 [2024-11-10 22:33:16,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:33:16,584 INFO L85 PathProgramCache]: Analyzing trace with hash 39687, now seen corresponding path program 1 times [2024-11-10 22:33:16,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:33:16,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120142706] [2024-11-10 22:33:16,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:33:16,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:33:16,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:16,587 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:33:16,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:16,589 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:33:16,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:33:16,589 INFO L85 PathProgramCache]: Analyzing trace with hash 35688, now seen corresponding path program 1 times [2024-11-10 22:33:16,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:33:16,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023814271] [2024-11-10 22:33:16,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:33:16,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:33:16,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:16,593 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:33:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:16,595 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:33:16,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:33:16,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1182321314, now seen corresponding path program 2 times [2024-11-10 22:33:16,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:33:16,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436067873] [2024-11-10 22:33:16,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:33:16,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:33:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:16,601 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:33:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:16,604 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:33:16,621 INFO L204 LassoAnalysis]: Preferences: [2024-11-10 22:33:16,622 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-10 22:33:16,622 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-10 22:33:16,622 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-10 22:33:16,622 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-10 22:33:16,622 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:16,622 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-10 22:33:16,622 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-10 22:33:16,622 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration3_Loop [2024-11-10 22:33:16,622 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-10 22:33:16,622 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-10 22:33:16,623 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:16,627 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:16,633 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:16,667 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-10 22:33:16,667 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-10 22:33:16,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:16,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:16,670 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) [2024-11-10 22:33:16,671 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 [2024-11-10 22:33:16,673 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-10 22:33:16,673 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:33:16,693 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-10 22:33:16,693 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: [] [2024-11-10 22:33:16,707 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2024-11-10 22:33:16,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:16,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:16,712 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) [2024-11-10 22:33:16,713 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 [2024-11-10 22:33:16,714 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-10 22:33:16,714 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:33:16,740 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 [2024-11-10 22:33:16,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:16,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:16,743 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) [2024-11-10 22:33:16,744 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 [2024-11-10 22:33:16,745 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-10 22:33:16,745 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:33:16,771 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-10 22:33:16,776 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 [2024-11-10 22:33:16,777 INFO L204 LassoAnalysis]: Preferences: [2024-11-10 22:33:16,777 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-10 22:33:16,777 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-10 22:33:16,777 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-10 22:33:16,777 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-10 22:33:16,777 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:16,777 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-10 22:33:16,777 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-10 22:33:16,777 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration3_Loop [2024-11-10 22:33:16,777 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-10 22:33:16,777 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-10 22:33:16,779 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:16,793 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:16,800 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:16,859 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-10 22:33:16,859 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-10 22:33:16,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:16,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:16,861 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) [2024-11-10 22:33:16,862 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 [2024-11-10 22:33:16,863 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 [2024-11-10 22:33:16,872 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 22:33:16,873 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-10 22:33:16,873 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 22:33:16,873 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 22:33:16,873 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 22:33:16,873 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-10 22:33:16,873 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-10 22:33:16,875 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-10 22:33:16,877 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-10 22:33:16,877 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-10 22:33:16,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:16,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:16,879 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) [2024-11-10 22:33:16,880 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 [2024-11-10 22:33:16,883 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-10 22:33:16,883 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-10 22:33:16,883 INFO L474 LassoAnalysis]: Proved termination. [2024-11-10 22:33:16,883 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2024-11-10 22:33:16,897 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 [2024-11-10 22:33:16,898 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-10 22:33:16,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:33:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:33:16,929 INFO L255 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 22:33:16,929 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:33:16,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:33:16,939 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:33:16,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:33:16,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:33:16,962 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 [2024-11-10 22:33:16,962 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:33:16,973 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 19 states and 21 transitions. Complement of second has 5 states. [2024-11-10 22:33:16,977 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 [2024-11-10 22:33:16,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:33:16,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2024-11-10 22:33:16,978 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 3 letters. [2024-11-10 22:33:16,978 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:33:16,979 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 3 letters. [2024-11-10 22:33:16,979 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:33:16,979 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 6 letters. [2024-11-10 22:33:16,979 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:33:16,979 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 21 transitions. [2024-11-10 22:33:16,983 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-10 22:33:16,983 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 11 states and 12 transitions. [2024-11-10 22:33:16,984 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2024-11-10 22:33:16,984 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2024-11-10 22:33:16,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 12 transitions. [2024-11-10 22:33:16,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-10 22:33:16,984 INFO L218 hiAutomatonCegarLoop]: Abstraction has 11 states and 12 transitions. [2024-11-10 22:33:16,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 12 transitions. [2024-11-10 22:33:16,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2024-11-10 22:33:16,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 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) [2024-11-10 22:33:16,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2024-11-10 22:33:16,985 INFO L240 hiAutomatonCegarLoop]: Abstraction has 9 states and 10 transitions. [2024-11-10 22:33:16,985 INFO L425 stractBuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2024-11-10 22:33:16,985 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-10 22:33:16,985 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 10 transitions. [2024-11-10 22:33:16,985 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-10 22:33:16,985 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-10 22:33:16,985 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-10 22:33:16,985 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2024-11-10 22:33:16,985 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-10 22:33:16,985 INFO L745 eck$LassoCheckResult]: Stem: 288#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 289#ULTIMATE.init_returnLabel#1 assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 281#L16 assume true; 282#L16-1 assume !!(0 != main_~x~0#1); 286#L17 assume main_~x~0#1 > 0;main_~x~0#1 := main_~x~0#1 - 1; 283#L16 assume true; 284#L16-1 [2024-11-10 22:33:16,986 INFO L747 eck$LassoCheckResult]: Loop: 284#L16-1 assume !!(0 != main_~x~0#1); 285#L17 assume !(main_~x~0#1 > 0);main_~x~0#1 := 1 + main_~x~0#1; 287#L16 assume true; 284#L16-1 [2024-11-10 22:33:16,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:33:16,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1182321283, now seen corresponding path program 2 times [2024-11-10 22:33:16,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:33:16,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99530453] [2024-11-10 22:33:16,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:33:16,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:33:16,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:16,994 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:33:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:17,001 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:33:17,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:33:17,001 INFO L85 PathProgramCache]: Analyzing trace with hash 35688, now seen corresponding path program 2 times [2024-11-10 22:33:17,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:33:17,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322087315] [2024-11-10 22:33:17,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:33:17,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:33:17,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:17,009 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:33:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:17,016 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:33:17,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:33:17,017 INFO L85 PathProgramCache]: Analyzing trace with hash -493446746, now seen corresponding path program 2 times [2024-11-10 22:33:17,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:33:17,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502765092] [2024-11-10 22:33:17,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:33:17,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:33:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:33:17,068 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:33:17,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:33:17,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502765092] [2024-11-10 22:33:17,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502765092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:33:17,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:33:17,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:33:17,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747186572] [2024-11-10 22:33:17,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:33:17,084 INFO L204 LassoAnalysis]: Preferences: [2024-11-10 22:33:17,084 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-10 22:33:17,084 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-10 22:33:17,084 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-10 22:33:17,084 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-10 22:33:17,084 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:17,085 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-10 22:33:17,085 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-10 22:33:17,085 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration4_Loop [2024-11-10 22:33:17,085 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-10 22:33:17,085 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-10 22:33:17,086 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:17,088 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:17,095 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:17,133 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-10 22:33:17,134 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-10 22:33:17,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:17,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:17,136 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) [2024-11-10 22:33:17,137 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 [2024-11-10 22:33:17,138 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-10 22:33:17,138 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:33:17,155 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-10 22:33:17,156 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: [] [2024-11-10 22:33:17,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2024-11-10 22:33:17,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:17,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:17,168 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) [2024-11-10 22:33:17,170 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 [2024-11-10 22:33:17,170 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-10 22:33:17,170 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:33:17,194 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 [2024-11-10 22:33:17,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:17,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:17,196 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) [2024-11-10 22:33:17,197 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 [2024-11-10 22:33:17,197 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-10 22:33:17,197 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:33:17,225 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-10 22:33:17,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2024-11-10 22:33:17,229 INFO L204 LassoAnalysis]: Preferences: [2024-11-10 22:33:17,229 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-10 22:33:17,229 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-10 22:33:17,229 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-10 22:33:17,229 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-10 22:33:17,229 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:17,229 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-10 22:33:17,229 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-10 22:33:17,229 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration4_Loop [2024-11-10 22:33:17,229 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-10 22:33:17,230 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-10 22:33:17,231 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:17,236 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:17,239 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:17,275 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-10 22:33:17,275 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-10 22:33:17,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:17,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:17,278 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) [2024-11-10 22:33:17,279 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 [2024-11-10 22:33:17,280 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 [2024-11-10 22:33:17,290 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 22:33:17,290 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-10 22:33:17,291 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 22:33:17,291 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 22:33:17,291 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 22:33:17,292 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-10 22:33:17,292 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-10 22:33:17,295 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-10 22:33:17,297 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-11-10 22:33:17,297 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-10 22:33:17,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:17,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:17,300 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) [2024-11-10 22:33:17,301 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 [2024-11-10 22:33:17,301 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-10 22:33:17,301 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-10 22:33:17,302 INFO L474 LassoAnalysis]: Proved termination. [2024-11-10 22:33:17,302 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2024-11-10 22:33:17,313 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 [2024-11-10 22:33:17,318 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-10 22:33:17,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:33:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:33:17,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 22:33:17,331 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:33:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:33:17,339 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:33:17,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:33:17,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:33:17,350 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 [2024-11-10 22:33:17,350 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 3 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2024-11-10 22:33:17,355 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 3. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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 12 states and 13 transitions. Complement of second has 5 states. [2024-11-10 22:33:17,355 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 [2024-11-10 22:33:17,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2024-11-10 22:33:17,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2024-11-10 22:33:17,356 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 6 letters. Loop has 3 letters. [2024-11-10 22:33:17,356 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:33:17,356 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-10 22:33:17,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:33:17,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:33:17,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 22:33:17,367 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:33:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:33:17,375 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:33:17,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:33:17,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:33:17,386 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 [2024-11-10 22:33:17,386 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 3 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2024-11-10 22:33:17,391 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 3. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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 12 states and 13 transitions. Complement of second has 5 states. [2024-11-10 22:33:17,391 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 [2024-11-10 22:33:17,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2024-11-10 22:33:17,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2024-11-10 22:33:17,392 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 6 letters. Loop has 3 letters. [2024-11-10 22:33:17,392 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:33:17,392 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-10 22:33:17,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:33:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:33:17,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 22:33:17,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:33:17,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:33:17,412 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:33:17,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:33:17,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:33:17,431 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 [2024-11-10 22:33:17,431 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 3 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2024-11-10 22:33:17,441 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 3. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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 14 states and 15 transitions. Complement of second has 6 states. [2024-11-10 22:33:17,445 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 [2024-11-10 22:33:17,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2024-11-10 22:33:17,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2024-11-10 22:33:17,446 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2024-11-10 22:33:17,446 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:33:17,446 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 9 letters. Loop has 3 letters. [2024-11-10 22:33:17,446 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:33:17,446 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 6 letters. [2024-11-10 22:33:17,447 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:33:17,447 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 15 transitions. [2024-11-10 22:33:17,452 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-10 22:33:17,452 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 0 states and 0 transitions. [2024-11-10 22:33:17,452 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-10 22:33:17,452 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-10 22:33:17,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-10 22:33:17,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-10 22:33:17,452 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-10 22:33:17,452 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-10 22:33:17,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:33:17,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:33:17,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:33:17,473 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2024-11-10 22:33:17,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 22:33:17,474 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2024-11-10 22:33:17,474 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2024-11-10 22:33:17,474 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-10 22:33:17,474 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2024-11-10 22:33:17,474 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-10 22:33:17,474 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-10 22:33:17,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-10 22:33:17,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-10 22:33:17,474 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-10 22:33:17,474 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-10 22:33:17,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 22:33:17,474 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-10 22:33:17,475 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-11-10 22:33:17,475 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-11-10 22:33:17,475 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-10 22:33:17,475 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-11-10 22:33:17,485 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 10.11 10:33:17 BoogieIcfgContainer [2024-11-10 22:33:17,485 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-10 22:33:17,486 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 22:33:17,486 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 22:33:17,486 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 22:33:17,486 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:33:15" (3/4) ... [2024-11-10 22:33:17,488 INFO L146 WitnessPrinter]: No result that supports witness generation found [2024-11-10 22:33:17,489 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 22:33:17,490 INFO L158 Benchmark]: Toolchain (without parser) took 2812.39ms. Allocated memory was 136.3MB in the beginning and 172.0MB in the end (delta: 35.7MB). Free memory was 62.9MB in the beginning and 137.7MB in the end (delta: -74.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 22:33:17,490 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 [2024-11-10 22:33:17,490 INFO L158 Benchmark]: CDTParser took 0.68ms. Allocated memory is still 136.3MB. Free memory is still 98.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 22:33:17,491 INFO L158 Benchmark]: CACSL2BoogieTranslator took 218.52ms. Allocated memory was 136.3MB in the beginning and 172.0MB in the end (delta: 35.7MB). Free memory was 62.7MB in the beginning and 141.4MB in the end (delta: -78.7MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2024-11-10 22:33:17,491 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.91ms. Allocated memory is still 172.0MB. Free memory was 141.4MB in the beginning and 143.1MB in the end (delta: -1.8MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. [2024-11-10 22:33:17,492 INFO L158 Benchmark]: Boogie Preprocessor took 14.86ms. Allocated memory is still 172.0MB. Free memory was 143.1MB in the beginning and 142.3MB in the end (delta: 857.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 22:33:17,492 INFO L158 Benchmark]: IcfgBuilder took 211.18ms. Allocated memory is still 172.0MB. Free memory was 142.3MB in the beginning and 132.6MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-10 22:33:17,492 INFO L158 Benchmark]: BuchiAutomizer took 2327.82ms. Allocated memory is still 172.0MB. Free memory was 132.6MB in the beginning and 138.1MB in the end (delta: -5.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 22:33:17,493 INFO L158 Benchmark]: Witness Printer took 3.51ms. Allocated memory is still 172.0MB. Free memory was 138.0MB in the beginning and 137.7MB in the end (delta: 304.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 22:33:17,494 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.68ms. Allocated memory is still 136.3MB. Free memory is still 98.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 218.52ms. Allocated memory was 136.3MB in the beginning and 172.0MB in the end (delta: 35.7MB). Free memory was 62.7MB in the beginning and 141.4MB in the end (delta: -78.7MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.91ms. Allocated memory is still 172.0MB. Free memory was 141.4MB in the beginning and 143.1MB in the end (delta: -1.8MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.86ms. Allocated memory is still 172.0MB. Free memory was 143.1MB in the beginning and 142.3MB in the end (delta: 857.5kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 211.18ms. Allocated memory is still 172.0MB. Free memory was 142.3MB in the beginning and 132.6MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 2327.82ms. Allocated memory is still 172.0MB. Free memory was 132.6MB in the beginning and 138.1MB in the end (delta: -5.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.51ms. Allocated memory is still 172.0MB. Free memory was 138.0MB in the beginning and 137.7MB in the end (delta: 304.9kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function x and consists of 3 locations. One deterministic module has affine ranking function ((long) -1 * x) and consists of 3 locations. One nondeterministic module has affine ranking function ((long) -1 * x) and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.2s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 34 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 28 mSDsluCounter, 41 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 47 IncrementalHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 32 mSDtfsCounter, 47 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax202 hnf100 lsp49 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq165 hnf94 smp82 dnf100 smp100 tf113 neg100 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 21ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating [2024-11-10 22:33:17,513 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 RESULT: Ultimate proved your program to be correct! [2024-11-10 22:33:17,524 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 [2024-11-10 22:33:17,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-10 22:33:17,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE