./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/NonTermination3-1.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/NonTermination3-1.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 fabc9d8a61dd824da0c561a6d62c57fe8eb320f6ad8009599cd12699fa04e01c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:32:03,624 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:32:03,690 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-10 22:32:03,695 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:32:03,695 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:32:03,696 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.Remove goto edges from RCFG [2024-11-10 22:32:03,710 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:32:03,710 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:32:03,710 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:32:03,711 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:32:03,711 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:32:03,711 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:32:03,712 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:32:03,712 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:32:03,712 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-10 22:32:03,712 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-10 22:32:03,713 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-10 22:32:03,714 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-10 22:32:03,714 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-10 22:32:03,714 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-10 22:32:03,714 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:32:03,715 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-10 22:32:03,715 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:32:03,715 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:32:03,715 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-10 22:32:03,716 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-10 22:32:03,716 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-10 22:32:03,716 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:32:03,716 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:32:03,716 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:32:03,716 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-10 22:32:03,717 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:32:03,717 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:32:03,717 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:32:03,717 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:32:03,717 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:32:03,717 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-10 22:32:03,718 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fabc9d8a61dd824da0c561a6d62c57fe8eb320f6ad8009599cd12699fa04e01c [2024-11-10 22:32:03,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:32:03,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:32:03,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:32:03,933 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:32:03,933 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:32:03,934 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/NonTermination3-1.c [2024-11-10 22:32:05,156 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:32:05,299 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:32:05,300 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NonTermination3-1.c [2024-11-10 22:32:05,305 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec70d4fa1/2a5e691cef304318842d3895af9b1d8e/FLAGb8f92593d [2024-11-10 22:32:05,726 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec70d4fa1/2a5e691cef304318842d3895af9b1d8e [2024-11-10 22:32:05,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:32:05,732 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:32:05,736 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:32:05,736 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:32:05,740 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:32:05,741 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:32:05" (1/1) ... [2024-11-10 22:32:05,742 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@343d59d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:32:05, skipping insertion in model container [2024-11-10 22:32:05,743 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:32:05" (1/1) ... [2024-11-10 22:32:05,755 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:32:05,910 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:32:05,915 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:32:05,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:32:05,944 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:32:05,945 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:32:05 WrapperNode [2024-11-10 22:32:05,945 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:32:05,947 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:32:05,947 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:32:05,947 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:32:05,952 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:32:05" (1/1) ... [2024-11-10 22:32:05,957 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:32:05" (1/1) ... [2024-11-10 22:32:05,970 INFO L138 Inliner]: procedures = 8, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 40 [2024-11-10 22:32:05,971 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:32:05,972 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:32:05,972 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:32:05,972 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:32:05,979 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:32:05" (1/1) ... [2024-11-10 22:32:05,980 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:32:05" (1/1) ... [2024-11-10 22:32:05,986 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:32:05" (1/1) ... [2024-11-10 22:32:06,000 INFO L175 MemorySlicer]: Split 3 memory accesses to 1 slices as follows [3]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 2 writes are split as follows [2]. [2024-11-10 22:32:06,001 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:32:05" (1/1) ... [2024-11-10 22:32:06,001 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:32:05" (1/1) ... [2024-11-10 22:32:06,007 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:32:05" (1/1) ... [2024-11-10 22:32:06,009 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:32:05" (1/1) ... [2024-11-10 22:32:06,010 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:32:05" (1/1) ... [2024-11-10 22:32:06,010 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:32:05" (1/1) ... [2024-11-10 22:32:06,011 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:32:06,012 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:32:06,012 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:32:06,012 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:32:06,013 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:32:05" (1/1) ... [2024-11-10 22:32:06,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:32:06,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:32:06,041 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 22:32:06,043 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 22:32:06,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 22:32:06,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:32:06,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:32:06,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 22:32:06,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 22:32:06,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 22:32:06,123 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:32:06,125 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:32:06,217 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L11: call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset; [2024-11-10 22:32:06,223 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-11-10 22:32:06,226 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:32:06,235 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:32:06,235 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:32:06,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:32:06 BoogieIcfgContainer [2024-11-10 22:32:06,236 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:32:06,237 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-10 22:32:06,237 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-10 22:32:06,240 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-10 22:32:06,241 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-10 22:32:06,242 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 10.11 10:32:05" (1/3) ... [2024-11-10 22:32:06,243 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@251c2279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 10:32:06, skipping insertion in model container [2024-11-10 22:32:06,243 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-10 22:32:06,243 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:32:05" (2/3) ... [2024-11-10 22:32:06,243 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@251c2279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 10:32:06, skipping insertion in model container [2024-11-10 22:32:06,243 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-10 22:32:06,243 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:32:06" (3/3) ... [2024-11-10 22:32:06,244 INFO L332 chiAutomizerObserver]: Analyzing ICFG NonTermination3-1.c [2024-11-10 22:32:06,304 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-10 22:32:06,304 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-10 22:32:06,304 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-10 22:32:06,304 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-10 22:32:06,304 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-10 22:32:06,305 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-10 22:32:06,305 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-10 22:32:06,305 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-10 22:32:06,308 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 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 22:32:06,322 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2024-11-10 22:32:06,322 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-10 22:32:06,323 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-10 22:32:06,326 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-10 22:32:06,326 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-10 22:32:06,327 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-10 22:32:06,327 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 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 22:32:06,328 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2024-11-10 22:32:06,329 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-10 22:32:06,329 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-10 22:32:06,329 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-10 22:32:06,329 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-10 22:32:06,333 INFO L745 eck$LassoCheckResult]: Stem: 7#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 10#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_#t~nondet1#1, main_#t~pre2#1, main_~n~0#1, main_#t~mem3#1, main_#t~short4#1, main_#t~nondet5#1, main_~i~0#1, main_~#a~0#1.base, main_~#a~0#1.offset;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;call main_~#a~0#1.base, main_~#a~0#1.offset := #Ultimate.allocOnStack(40);main_~n~0#1 := 0; 3#L13-1true [2024-11-10 22:32:06,333 INFO L747 eck$LassoCheckResult]: Loop: 3#L13-1true assume true; 11#L13-2true assume !!(main_~n~0#1 < 10);havoc main_#t~nondet1#1;call write~int#0(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~n~0#1, 4);havoc main_#t~nondet1#1;main_#t~pre2#1 := 1 + main_~n~0#1;main_~n~0#1 := 1 + main_~n~0#1;havoc main_#t~pre2#1; 3#L13-1true [2024-11-10 22:32:06,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:32:06,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1600, now seen corresponding path program 1 times [2024-11-10 22:32:06,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:32:06,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386122553] [2024-11-10 22:32:06,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:32:06,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:32:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:32:06,410 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:32:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:32:06,431 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:32:06,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:32:06,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1504, now seen corresponding path program 1 times [2024-11-10 22:32:06,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:32:06,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463239683] [2024-11-10 22:32:06,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:32:06,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:32:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:32:06,441 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:32:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:32:06,447 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:32:06,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:32:06,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1538143, now seen corresponding path program 1 times [2024-11-10 22:32:06,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:32:06,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583216530] [2024-11-10 22:32:06,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:32:06,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:32:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:32:06,463 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:32:06,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:32:06,473 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:32:06,671 INFO L204 LassoAnalysis]: Preferences: [2024-11-10 22:32:06,672 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-10 22:32:06,672 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-10 22:32:06,672 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-10 22:32:06,672 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-10 22:32:06,672 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:32:06,673 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-10 22:32:06,673 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-10 22:32:06,673 INFO L132 ssoRankerPreferences]: Filename of dumped script: NonTermination3-1.c_Iteration1_Lasso [2024-11-10 22:32:06,673 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-10 22:32:06,673 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-10 22:32:06,687 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:32:06,694 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:32:06,698 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:32:06,775 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:32:06,777 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:32:06,779 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:32:06,782 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:32:06,785 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:32:06,788 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:32:06,886 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-10 22:32:06,889 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-10 22:32:06,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:32:06,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:32:06,892 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 22:32:06,893 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 22:32:06,894 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 22:32:06,905 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 22:32:06,905 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-10 22:32:06,906 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 22:32:06,906 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 22:32:06,906 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 22:32:06,907 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-10 22:32:06,907 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-10 22:32:06,909 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-10 22:32:06,920 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 22:32:06,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:32:06,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:32:06,924 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 22:32:06,925 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 22:32:06,930 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 22:32:06,942 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 22:32:06,942 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-10 22:32:06,942 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 22:32:06,943 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 22:32:06,943 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 22:32:06,944 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-10 22:32:06,944 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-10 22:32:06,946 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-10 22:32:06,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2024-11-10 22:32:06,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:32:06,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:32:06,961 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 22:32:06,963 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 22:32:06,964 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 22:32:06,974 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 22:32:06,975 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-10 22:32:06,975 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 22:32:06,975 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 22:32:06,975 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 22:32:06,976 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-10 22:32:06,976 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-10 22:32:06,980 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-10 22:32:06,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2024-11-10 22:32:06,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:32:06,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:32:06,993 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 22:32:06,994 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 22:32:06,994 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 22:32:07,004 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 22:32:07,005 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 22:32:07,005 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 22:32:07,005 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 22:32:07,008 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-10 22:32:07,008 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-10 22:32:07,012 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-10 22:32:07,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2024-11-10 22:32:07,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:32:07,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:32:07,028 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 22:32:07,029 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 22:32:07,031 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 22:32:07,041 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 22:32:07,041 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 22:32:07,041 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 22:32:07,041 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 22:32:07,045 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-10 22:32:07,045 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-10 22:32:07,049 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-10 22:32:07,060 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 22:32:07,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:32:07,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:32:07,062 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 22:32:07,062 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 22:32:07,064 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 22:32:07,074 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 22:32:07,074 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 22:32:07,074 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 22:32:07,074 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 22:32:07,077 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-10 22:32:07,077 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-10 22:32:07,080 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-10 22:32:07,090 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 22:32:07,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:32:07,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:32:07,092 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 22:32:07,093 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 22:32:07,094 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 22:32:07,104 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 22:32:07,104 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 22:32:07,104 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 22:32:07,104 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 22:32:07,109 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-10 22:32:07,109 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-10 22:32:07,116 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-10 22:32:07,149 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2024-11-10 22:32:07,149 INFO L444 ModelExtractionUtils]: 0 out of 13 variables were initially zero. Simplification set additionally 10 variables to zero. [2024-11-10 22:32:07,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:32:07,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:32:07,168 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 22:32:07,170 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 22:32:07,171 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-10 22:32:07,182 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2024-11-10 22:32:07,182 INFO L474 LassoAnalysis]: Proved termination. [2024-11-10 22:32:07,183 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_~#a~0#1.base)_1, ULTIMATE.start_main_~n~0#1) = 19*v_rep(select #length ULTIMATE.start_main_~#a~0#1.base)_1 - 8*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2024-11-10 22:32:07,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2024-11-10 22:32:07,199 INFO L156 tatePredicateManager]: 1 out of 1 supporting invariants were superfluous and have been removed [2024-11-10 22:32:07,209 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-11-10 22:32:07,210 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] [2024-11-10 22:32:07,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:32:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:32:07,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 22:32:07,238 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:32:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:32:07,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:32:07,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:32:07,256 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 22:32:07,277 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 22:32:07,280 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:32:07,314 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 22 states and 30 transitions. Complement of second has 6 states. [2024-11-10 22:32:07,324 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 22:32:07,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:32:07,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2024-11-10 22:32:07,332 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 2 letters. Loop has 2 letters. [2024-11-10 22:32:07,333 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:32:07,333 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 2 letters. [2024-11-10 22:32:07,333 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:32:07,333 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 2 letters. Loop has 4 letters. [2024-11-10 22:32:07,334 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:32:07,335 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 30 transitions. [2024-11-10 22:32:07,337 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-10 22:32:07,339 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 10 states and 13 transitions. [2024-11-10 22:32:07,341 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 22:32:07,341 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2024-11-10 22:32:07,341 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2024-11-10 22:32:07,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2024-11-10 22:32:07,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-10 22:32:07,342 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2024-11-10 22:32:07,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2024-11-10 22:32:07,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2024-11-10 22:32:07,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 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 22:32:07,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2024-11-10 22:32:07,385 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2024-11-10 22:32:07,385 INFO L425 stractBuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2024-11-10 22:32:07,385 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-10 22:32:07,386 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2024-11-10 22:32:07,386 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-10 22:32:07,387 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-10 22:32:07,387 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-10 22:32:07,387 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2024-11-10 22:32:07,387 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-10 22:32:07,388 INFO L745 eck$LassoCheckResult]: Stem: 81#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 82#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_#t~nondet1#1, main_#t~pre2#1, main_~n~0#1, main_#t~mem3#1, main_#t~short4#1, main_#t~nondet5#1, main_~i~0#1, main_~#a~0#1.base, main_~#a~0#1.offset;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;call main_~#a~0#1.base, main_~#a~0#1.offset := #Ultimate.allocOnStack(40);main_~n~0#1 := 0; 73#L13-1 assume true; 75#L13-2 assume !(main_~n~0#1 < 10); 80#L13 havoc main_~n~0#1; 77#L17 [2024-11-10 22:32:07,388 INFO L747 eck$LassoCheckResult]: Loop: 77#L17 assume true;main_#t~short4#1 := 0 <= main_~i~0#1 && main_~i~0#1 < 10; 78#L17-2 assume main_#t~short4#1;call main_#t~mem3#1 := read~int#0(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);main_#t~short4#1 := main_#t~mem3#1 >= 0; 79#L17-1 assume !!main_#t~short4#1;havoc main_#t~mem3#1;havoc main_#t~short4#1;havoc main_#t~nondet5#1;main_~i~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;call write~int#0(0, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4); 77#L17 [2024-11-10 22:32:07,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:32:07,388 INFO L85 PathProgramCache]: Analyzing trace with hash 47682383, now seen corresponding path program 1 times [2024-11-10 22:32:07,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:32:07,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530284902] [2024-11-10 22:32:07,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:32:07,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:32:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:32:07,449 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 22:32:07,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:32:07,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530284902] [2024-11-10 22:32:07,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530284902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:32:07,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:32:07,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:32:07,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346584965] [2024-11-10 22:32:07,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:32:07,452 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-10 22:32:07,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:32:07,455 INFO L85 PathProgramCache]: Analyzing trace with hash 39656, now seen corresponding path program 1 times [2024-11-10 22:32:07,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:32:07,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252752787] [2024-11-10 22:32:07,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:32:07,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:32:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:32:07,467 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:32:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:32:07,475 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:32:07,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:32:07,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:32:07,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:32:07,576 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. cyclomatic complexity: 5 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 22:32:07,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 22:32:07,586 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2024-11-10 22:32:07,586 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2024-11-10 22:32:07,587 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-10 22:32:07,588 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 11 states and 13 transitions. [2024-11-10 22:32:07,588 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2024-11-10 22:32:07,588 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2024-11-10 22:32:07,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 13 transitions. [2024-11-10 22:32:07,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-10 22:32:07,588 INFO L218 hiAutomatonCegarLoop]: Abstraction has 11 states and 13 transitions. [2024-11-10 22:32:07,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 13 transitions. [2024-11-10 22:32:07,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2024-11-10 22:32:07,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:32:07,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2024-11-10 22:32:07,589 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10 states and 12 transitions. [2024-11-10 22:32:07,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:32:07,590 INFO L425 stractBuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2024-11-10 22:32:07,590 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-10 22:32:07,590 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2024-11-10 22:32:07,591 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-10 22:32:07,591 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-10 22:32:07,591 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-10 22:32:07,591 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2024-11-10 22:32:07,591 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-10 22:32:07,592 INFO L745 eck$LassoCheckResult]: Stem: 109#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 110#ULTIMATE.init_returnLabel#1 assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~pre2#1, main_~n~0#1, main_#t~mem3#1, main_#t~short4#1, main_#t~nondet5#1, main_~i~0#1, main_~#a~0#1.base, main_~#a~0#1.offset;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;call main_~#a~0#1.base, main_~#a~0#1.offset := #Ultimate.allocOnStack(40);main_~n~0#1 := 0; 104#L13-1 assume true; 105#L13-2 assume !!(main_~n~0#1 < 10);havoc main_#t~nondet1#1;call write~int#0(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~n~0#1, 4);havoc main_#t~nondet1#1;main_#t~pre2#1 := 1 + main_~n~0#1;main_~n~0#1 := 1 + main_~n~0#1;havoc main_#t~pre2#1; 106#L13-1 assume true; 107#L13-2 assume !(main_~n~0#1 < 10); 108#L13 havoc main_~n~0#1; 101#L17 [2024-11-10 22:32:07,592 INFO L747 eck$LassoCheckResult]: Loop: 101#L17 assume true;main_#t~short4#1 := 0 <= main_~i~0#1 && main_~i~0#1 < 10; 102#L17-2 assume main_#t~short4#1;call main_#t~mem3#1 := read~int#0(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);main_#t~short4#1 := main_#t~mem3#1 >= 0; 103#L17-1 assume !!main_#t~short4#1;havoc main_#t~mem3#1;havoc main_#t~short4#1;havoc main_#t~nondet5#1;main_~i~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;call write~int#0(0, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4); 101#L17 [2024-11-10 22:32:07,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:32:07,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1421805360, now seen corresponding path program 1 times [2024-11-10 22:32:07,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:32:07,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185311265] [2024-11-10 22:32:07,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:32:07,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:32:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:32:07,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:32:07,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:32:07,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185311265] [2024-11-10 22:32:07,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185311265] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:32:07,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308170724] [2024-11-10 22:32:07,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:32:07,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:32:07,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:32:07,647 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 22:32:07,648 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 22:32:07,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:32:07,677 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 22:32:07,677 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:32:07,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:32:07,698 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:32:07,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:32:07,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308170724] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:32:07,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:32:07,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-10 22:32:07,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038048379] [2024-11-10 22:32:07,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:32:07,722 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-10 22:32:07,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:32:07,722 INFO L85 PathProgramCache]: Analyzing trace with hash 39656, now seen corresponding path program 2 times [2024-11-10 22:32:07,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:32:07,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089348051] [2024-11-10 22:32:07,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:32:07,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:32:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:32:07,732 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:32:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:32:07,736 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:32:07,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:32:07,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 22:32:07,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-10 22:32:07,820 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. cyclomatic complexity: 4 Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:32:07,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 22:32:07,833 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2024-11-10 22:32:07,833 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 22 transitions. [2024-11-10 22:32:07,835 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-10 22:32:07,835 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 17 states and 19 transitions. [2024-11-10 22:32:07,835 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2024-11-10 22:32:07,836 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2024-11-10 22:32:07,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 19 transitions. [2024-11-10 22:32:07,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-10 22:32:07,836 INFO L218 hiAutomatonCegarLoop]: Abstraction has 17 states and 19 transitions. [2024-11-10 22:32:07,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 19 transitions. [2024-11-10 22:32:07,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2024-11-10 22:32:07,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.125) internal successors, (18), 15 states have internal predecessors, (18), 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 22:32:07,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2024-11-10 22:32:07,837 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 18 transitions. [2024-11-10 22:32:07,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:32:07,838 INFO L425 stractBuchiCegarLoop]: Abstraction has 16 states and 18 transitions. [2024-11-10 22:32:07,838 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-10 22:32:07,838 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 18 transitions. [2024-11-10 22:32:07,838 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-10 22:32:07,838 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-10 22:32:07,838 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-10 22:32:07,839 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 1, 1, 1, 1] [2024-11-10 22:32:07,839 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-10 22:32:07,839 INFO L745 eck$LassoCheckResult]: Stem: 185#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 186#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_#t~nondet1#1, main_#t~pre2#1, main_~n~0#1, main_#t~mem3#1, main_#t~short4#1, main_#t~nondet5#1, main_~i~0#1, main_~#a~0#1.base, main_~#a~0#1.offset;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;call main_~#a~0#1.base, main_~#a~0#1.offset := #Ultimate.allocOnStack(40);main_~n~0#1 := 0; 177#L13-1 assume true; 178#L13-2 assume !!(main_~n~0#1 < 10);havoc main_#t~nondet1#1;call write~int#0(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~n~0#1, 4);havoc main_#t~nondet1#1;main_#t~pre2#1 := 1 + main_~n~0#1;main_~n~0#1 := 1 + main_~n~0#1;havoc main_#t~pre2#1; 179#L13-1 assume true; 180#L13-2 assume !!(main_~n~0#1 < 10);havoc main_#t~nondet1#1;call write~int#0(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~n~0#1, 4);havoc main_#t~nondet1#1;main_#t~pre2#1 := 1 + main_~n~0#1;main_~n~0#1 := 1 + main_~n~0#1;havoc main_#t~pre2#1; 188#L13-1 assume true; 192#L13-2 assume !!(main_~n~0#1 < 10);havoc main_#t~nondet1#1;call write~int#0(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~n~0#1, 4);havoc main_#t~nondet1#1;main_#t~pre2#1 := 1 + main_~n~0#1;main_~n~0#1 := 1 + main_~n~0#1;havoc main_#t~pre2#1; 191#L13-1 assume true; 190#L13-2 assume !!(main_~n~0#1 < 10);havoc main_#t~nondet1#1;call write~int#0(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~n~0#1, 4);havoc main_#t~nondet1#1;main_#t~pre2#1 := 1 + main_~n~0#1;main_~n~0#1 := 1 + main_~n~0#1;havoc main_#t~pre2#1; 189#L13-1 assume true; 187#L13-2 assume !(main_~n~0#1 < 10); 184#L13 havoc main_~n~0#1; 181#L17 [2024-11-10 22:32:07,839 INFO L747 eck$LassoCheckResult]: Loop: 181#L17 assume true;main_#t~short4#1 := 0 <= main_~i~0#1 && main_~i~0#1 < 10; 182#L17-2 assume main_#t~short4#1;call main_#t~mem3#1 := read~int#0(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);main_#t~short4#1 := main_#t~mem3#1 >= 0; 183#L17-1 assume !!main_#t~short4#1;havoc main_#t~mem3#1;havoc main_#t~short4#1;havoc main_#t~nondet5#1;main_~i~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;call write~int#0(0, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4); 181#L17 [2024-11-10 22:32:07,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:32:07,840 INFO L85 PathProgramCache]: Analyzing trace with hash 876429267, now seen corresponding path program 2 times [2024-11-10 22:32:07,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:32:07,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081190655] [2024-11-10 22:32:07,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:32:07,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:32:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:32:07,940 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:32:07,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:32:07,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081190655] [2024-11-10 22:32:07,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081190655] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:32:07,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050838317] [2024-11-10 22:32:07,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:32:07,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:32:07,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:32:07,943 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:32:07,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 22:32:07,990 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 22:32:07,990 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:32:07,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:32:07,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:32:08,019 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:32:08,020 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:32:08,077 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:32:08,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050838317] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:32:08,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:32:08,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-10 22:32:08,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001329507] [2024-11-10 22:32:08,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:32:08,078 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-10 22:32:08,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:32:08,079 INFO L85 PathProgramCache]: Analyzing trace with hash 39656, now seen corresponding path program 3 times [2024-11-10 22:32:08,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:32:08,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649999309] [2024-11-10 22:32:08,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:32:08,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:32:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:32:08,085 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:32:08,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:32:08,088 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:32:08,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:32:08,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 22:32:08,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-10 22:32:08,170 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. cyclomatic complexity: 4 Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 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 22:32:08,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 22:32:08,191 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2024-11-10 22:32:08,191 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 37 transitions. [2024-11-10 22:32:08,192 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-10 22:32:08,193 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 29 states and 31 transitions. [2024-11-10 22:32:08,193 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2024-11-10 22:32:08,194 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2024-11-10 22:32:08,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 31 transitions. [2024-11-10 22:32:08,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-10 22:32:08,194 INFO L218 hiAutomatonCegarLoop]: Abstraction has 29 states and 31 transitions. [2024-11-10 22:32:08,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 31 transitions. [2024-11-10 22:32:08,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-11-10 22:32:08,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 27 states have internal predecessors, (30), 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 22:32:08,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2024-11-10 22:32:08,197 INFO L240 hiAutomatonCegarLoop]: Abstraction has 28 states and 30 transitions. [2024-11-10 22:32:08,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 22:32:08,200 INFO L425 stractBuchiCegarLoop]: Abstraction has 28 states and 30 transitions. [2024-11-10 22:32:08,200 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-11-10 22:32:08,200 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 30 transitions. [2024-11-10 22:32:08,201 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-10 22:32:08,201 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-10 22:32:08,201 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-10 22:32:08,201 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [11, 10, 1, 1, 1, 1] [2024-11-10 22:32:08,202 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-10 22:32:08,202 INFO L745 eck$LassoCheckResult]: Stem: 323#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 324#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_#t~nondet1#1, main_#t~pre2#1, main_~n~0#1, main_#t~mem3#1, main_#t~short4#1, main_#t~nondet5#1, main_~i~0#1, main_~#a~0#1.base, main_~#a~0#1.offset;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;call main_~#a~0#1.base, main_~#a~0#1.offset := #Ultimate.allocOnStack(40);main_~n~0#1 := 0; 316#L13-1 assume true; 317#L13-2 assume !!(main_~n~0#1 < 10);havoc main_#t~nondet1#1;call write~int#0(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~n~0#1, 4);havoc main_#t~nondet1#1;main_#t~pre2#1 := 1 + main_~n~0#1;main_~n~0#1 := 1 + main_~n~0#1;havoc main_#t~pre2#1; 318#L13-1 assume true; 319#L13-2 assume !!(main_~n~0#1 < 10);havoc main_#t~nondet1#1;call write~int#0(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~n~0#1, 4);havoc main_#t~nondet1#1;main_#t~pre2#1 := 1 + main_~n~0#1;main_~n~0#1 := 1 + main_~n~0#1;havoc main_#t~pre2#1; 327#L13-1 assume true; 343#L13-2 assume !!(main_~n~0#1 < 10);havoc main_#t~nondet1#1;call write~int#0(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~n~0#1, 4);havoc main_#t~nondet1#1;main_#t~pre2#1 := 1 + main_~n~0#1;main_~n~0#1 := 1 + main_~n~0#1;havoc main_#t~pre2#1; 342#L13-1 assume true; 341#L13-2 assume !!(main_~n~0#1 < 10);havoc main_#t~nondet1#1;call write~int#0(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~n~0#1, 4);havoc main_#t~nondet1#1;main_#t~pre2#1 := 1 + main_~n~0#1;main_~n~0#1 := 1 + main_~n~0#1;havoc main_#t~pre2#1; 340#L13-1 assume true; 339#L13-2 assume !!(main_~n~0#1 < 10);havoc main_#t~nondet1#1;call write~int#0(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~n~0#1, 4);havoc main_#t~nondet1#1;main_#t~pre2#1 := 1 + main_~n~0#1;main_~n~0#1 := 1 + main_~n~0#1;havoc main_#t~pre2#1; 338#L13-1 assume true; 337#L13-2 assume !!(main_~n~0#1 < 10);havoc main_#t~nondet1#1;call write~int#0(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~n~0#1, 4);havoc main_#t~nondet1#1;main_#t~pre2#1 := 1 + main_~n~0#1;main_~n~0#1 := 1 + main_~n~0#1;havoc main_#t~pre2#1; 336#L13-1 assume true; 335#L13-2 assume !!(main_~n~0#1 < 10);havoc main_#t~nondet1#1;call write~int#0(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~n~0#1, 4);havoc main_#t~nondet1#1;main_#t~pre2#1 := 1 + main_~n~0#1;main_~n~0#1 := 1 + main_~n~0#1;havoc main_#t~pre2#1; 334#L13-1 assume true; 333#L13-2 assume !!(main_~n~0#1 < 10);havoc main_#t~nondet1#1;call write~int#0(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~n~0#1, 4);havoc main_#t~nondet1#1;main_#t~pre2#1 := 1 + main_~n~0#1;main_~n~0#1 := 1 + main_~n~0#1;havoc main_#t~pre2#1; 332#L13-1 assume true; 331#L13-2 assume !!(main_~n~0#1 < 10);havoc main_#t~nondet1#1;call write~int#0(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~n~0#1, 4);havoc main_#t~nondet1#1;main_#t~pre2#1 := 1 + main_~n~0#1;main_~n~0#1 := 1 + main_~n~0#1;havoc main_#t~pre2#1; 330#L13-1 assume true; 329#L13-2 assume !!(main_~n~0#1 < 10);havoc main_#t~nondet1#1;call write~int#0(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~n~0#1, 4);havoc main_#t~nondet1#1;main_#t~pre2#1 := 1 + main_~n~0#1;main_~n~0#1 := 1 + main_~n~0#1;havoc main_#t~pre2#1; 328#L13-1 assume true; 326#L13-2 assume !(main_~n~0#1 < 10); 325#L13 havoc main_~n~0#1; 320#L17 [2024-11-10 22:32:08,202 INFO L747 eck$LassoCheckResult]: Loop: 320#L17 assume true;main_#t~short4#1 := 0 <= main_~i~0#1 && main_~i~0#1 < 10; 321#L17-2 assume main_#t~short4#1;call main_#t~mem3#1 := read~int#0(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);main_#t~short4#1 := main_#t~mem3#1 >= 0; 322#L17-1 assume !!main_#t~short4#1;havoc main_#t~mem3#1;havoc main_#t~short4#1;havoc main_#t~nondet5#1;main_~i~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;call write~int#0(0, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4); 320#L17 [2024-11-10 22:32:08,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:32:08,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1699884263, now seen corresponding path program 3 times [2024-11-10 22:32:08,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:32:08,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977321657] [2024-11-10 22:32:08,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:32:08,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:32:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:32:08,226 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:32:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:32:08,242 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:32:08,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:32:08,243 INFO L85 PathProgramCache]: Analyzing trace with hash 39656, now seen corresponding path program 4 times [2024-11-10 22:32:08,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:32:08,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629947546] [2024-11-10 22:32:08,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:32:08,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:32:08,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:32:08,247 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:32:08,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:32:08,250 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:32:08,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:32:08,250 INFO L85 PathProgramCache]: Analyzing trace with hash 707317968, now seen corresponding path program 1 times [2024-11-10 22:32:08,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:32:08,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874089431] [2024-11-10 22:32:08,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:32:08,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:32:08,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:32:08,270 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:32:08,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:32:08,301 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:32:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:32:10,561 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:32:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:32:10,619 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: The program execution was not completely translated back. [2024-11-10 22:32:10,626 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: The program execution was not completely translated back. [2024-11-10 22:32:10,632 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: The program execution was not completely translated back. [2024-11-10 22:32:10,634 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: The program execution was not completely translated back. [2024-11-10 22:32:10,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 10.11 10:32:10 BoogieIcfgContainer [2024-11-10 22:32:10,635 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-10 22:32:10,636 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 22:32:10,636 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 22:32:10,636 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 22:32:10,636 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:32:06" (3/4) ... [2024-11-10 22:32:10,638 INFO L140 WitnessPrinter]: Generating witness for non-termination counterexample [2024-11-10 22:32:10,644 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: The program execution was not completely translated back. [2024-11-10 22:32:10,647 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: The program execution was not completely translated back. [2024-11-10 22:32:10,679 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-10 22:32:10,679 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 22:32:10,680 INFO L158 Benchmark]: Toolchain (without parser) took 4947.26ms. Allocated memory was 130.0MB in the beginning and 195.0MB in the end (delta: 65.0MB). Free memory was 61.4MB in the beginning and 111.4MB in the end (delta: -50.0MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. [2024-11-10 22:32:10,680 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 130.0MB. Free memory was 89.6MB in the beginning and 89.4MB in the end (delta: 160.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 22:32:10,680 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.38ms. Allocated memory was 130.0MB in the beginning and 195.0MB in the end (delta: 65.0MB). Free memory was 61.3MB in the beginning and 164.2MB in the end (delta: -102.9MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. [2024-11-10 22:32:10,680 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.89ms. Allocated memory is still 195.0MB. Free memory was 164.2MB in the beginning and 163.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 22:32:10,681 INFO L158 Benchmark]: Boogie Preprocessor took 39.54ms. Allocated memory is still 195.0MB. Free memory was 162.1MB in the beginning and 161.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 22:32:10,681 INFO L158 Benchmark]: IcfgBuilder took 224.14ms. Allocated memory is still 195.0MB. Free memory was 161.0MB in the beginning and 149.5MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-10 22:32:10,681 INFO L158 Benchmark]: BuchiAutomizer took 4398.20ms. Allocated memory is still 195.0MB. Free memory was 149.5MB in the beginning and 114.5MB in the end (delta: 35.0MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. [2024-11-10 22:32:10,681 INFO L158 Benchmark]: Witness Printer took 43.56ms. Allocated memory is still 195.0MB. Free memory was 114.5MB in the beginning and 111.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-10 22:32:10,682 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 130.0MB. Free memory was 89.6MB in the beginning and 89.4MB in the end (delta: 160.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 209.38ms. Allocated memory was 130.0MB in the beginning and 195.0MB in the end (delta: 65.0MB). Free memory was 61.3MB in the beginning and 164.2MB in the end (delta: -102.9MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.89ms. Allocated memory is still 195.0MB. Free memory was 164.2MB in the beginning and 163.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 39.54ms. Allocated memory is still 195.0MB. Free memory was 162.1MB in the beginning and 161.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 224.14ms. Allocated memory is still 195.0MB. Free memory was 161.0MB in the beginning and 149.5MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * BuchiAutomizer took 4398.20ms. Allocated memory is still 195.0MB. Free memory was 149.5MB in the beginning and 114.5MB in the end (delta: 35.0MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. * Witness Printer took 43.56ms. Allocated memory is still 195.0MB. Free memory was 114.5MB in the beginning and 111.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (3 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function null and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 13 locations. The remainder module has 28 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.3s and 5 iterations. TraceHistogramMax:11. Analysis of lassos took 4.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 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 [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 77 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 47 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35 IncrementalHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 30 mSDtfsCounter, 35 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU3 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital91 mio100 ax100 hnf100 lsp100 ukn59 mio100 lsp62 div100 bol100 ite100 ukn100 eq152 hnf92 smp100 dnf100 smp100 tf100 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 20ms VariablesStem: 2 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 17]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L10] int i = __VERIFIER_nondet_int(); [L11] int a[10]; [L13] int n = 0; VAL [a={2:0}, n=0] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, n=1] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, n=2] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, n=3] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, n=4] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, n=5] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, n=6] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, n=7] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, n=8] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, n=9] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, n=10] [L13] COND FALSE !(n < 10) VAL [a={2:0}] Loop: [L17] 0 <= i && i < 10 && a[i] >= 0 [L17] 0 <= i && i < 10 && a[i] >= 0 [L17] EXPR a[i] [L17] 0 <= i && i < 10 && a[i] >= 0 [L17] COND TRUE 0 <= i && i < 10 && a[i] >= 0 [L18] i = __VERIFIER_nondet_int() [L20] a[i] = 0 End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 17]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L10] int i = __VERIFIER_nondet_int(); [L11] int a[10]; [L13] int n = 0; VAL [a={2:0}, n=0] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, n=1] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, n=2] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, n=3] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, n=4] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, n=5] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, n=6] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, n=7] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, n=8] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, n=9] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, n=10] [L13] COND FALSE !(n < 10) VAL [a={2:0}] Loop: [L17] 0 <= i && i < 10 && a[i] >= 0 [L17] 0 <= i && i < 10 && a[i] >= 0 [L17] EXPR a[i] [L17] 0 <= i && i < 10 && a[i] >= 0 [L17] COND TRUE 0 <= i && i < 10 && a[i] >= 0 [L18] i = __VERIFIER_nondet_int() [L20] a[i] = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2024-11-10 22:32:10,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-10 22:32:10,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-10 22:32:11,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)