./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/Ex06.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 3289d67d 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-restricted-15/Ex06.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 7e66e5d0ac00f8e474147a7ee8b0260ea4ced8ccde7952ff642446632cdde4c3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 08:03:27,474 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 08:03:27,526 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-17 08:03:27,532 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 08:03:27,533 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 08:03:27,534 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.Remove goto edges from RCFG [2024-11-17 08:03:27,558 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 08:03:27,559 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 08:03:27,559 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 08:03:27,559 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 08:03:27,560 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 08:03:27,561 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 08:03:27,561 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 08:03:27,562 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 08:03:27,562 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-17 08:03:27,562 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-17 08:03:27,563 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-17 08:03:27,563 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-17 08:03:27,563 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-17 08:03:27,564 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-17 08:03:27,568 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 08:03:27,568 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-17 08:03:27,568 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 08:03:27,569 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 08:03:27,569 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-17 08:03:27,569 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-17 08:03:27,569 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-17 08:03:27,570 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 08:03:27,570 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 08:03:27,570 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 08:03:27,570 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-17 08:03:27,570 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 08:03:27,571 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 08:03:27,575 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 08:03:27,576 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 08:03:27,576 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 08:03:27,576 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-17 08:03:27,577 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e66e5d0ac00f8e474147a7ee8b0260ea4ced8ccde7952ff642446632cdde4c3 [2024-11-17 08:03:27,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 08:03:27,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 08:03:27,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 08:03:27,855 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 08:03:27,855 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 08:03:27,857 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/Ex06.c [2024-11-17 08:03:29,360 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 08:03:29,526 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 08:03:29,527 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/Ex06.c [2024-11-17 08:03:29,533 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4e328bef/790c0cc7cd3d463fb915702f643ca57c/FLAG39d8f2b31 [2024-11-17 08:03:29,937 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4e328bef/790c0cc7cd3d463fb915702f643ca57c [2024-11-17 08:03:29,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 08:03:29,945 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 08:03:29,946 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 08:03:29,946 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 08:03:29,951 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 08:03:29,952 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 08:03:29" (1/1) ... [2024-11-17 08:03:29,953 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a6a14ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:03:29, skipping insertion in model container [2024-11-17 08:03:29,953 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 08:03:29" (1/1) ... [2024-11-17 08:03:29,972 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 08:03:30,150 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 08:03:30,155 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 08:03:30,165 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 08:03:30,176 INFO L204 MainTranslator]: Completed translation [2024-11-17 08:03:30,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:03:30 WrapperNode [2024-11-17 08:03:30,177 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 08:03:30,178 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 08:03:30,178 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 08:03:30,178 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 08:03:30,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:03:30" (1/1) ... [2024-11-17 08:03:30,189 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:03:30" (1/1) ... [2024-11-17 08:03:30,203 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 15 [2024-11-17 08:03:30,204 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 08:03:30,204 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 08:03:30,205 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 08:03:30,205 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 08:03:30,214 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:03:30" (1/1) ... [2024-11-17 08:03:30,214 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:03:30" (1/1) ... [2024-11-17 08:03:30,215 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:03:30" (1/1) ... [2024-11-17 08:03:30,219 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-17 08:03:30,219 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:03:30" (1/1) ... [2024-11-17 08:03:30,220 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:03:30" (1/1) ... [2024-11-17 08:03:30,221 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:03:30" (1/1) ... [2024-11-17 08:03:30,221 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:03:30" (1/1) ... [2024-11-17 08:03:30,222 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:03:30" (1/1) ... [2024-11-17 08:03:30,222 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:03:30" (1/1) ... [2024-11-17 08:03:30,223 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 08:03:30,224 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 08:03:30,224 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 08:03:30,225 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 08:03:30,225 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:03:30" (1/1) ... [2024-11-17 08:03:30,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:03:30,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:03:30,256 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) [2024-11-17 08:03:30,258 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 [2024-11-17 08:03:30,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 08:03:30,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 08:03:30,373 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 08:03:30,375 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 08:03:30,432 INFO L? ?]: Removed 3 outVars from TransFormulas that were not future-live. [2024-11-17 08:03:30,432 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 08:03:30,442 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 08:03:30,442 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 08:03:30,443 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 08:03:30 BoogieIcfgContainer [2024-11-17 08:03:30,443 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 08:03:30,444 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-17 08:03:30,444 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-17 08:03:30,448 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-17 08:03:30,448 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-17 08:03:30,449 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 17.11 08:03:29" (1/3) ... [2024-11-17 08:03:30,449 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@712bb175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.11 08:03:30, skipping insertion in model container [2024-11-17 08:03:30,450 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-17 08:03:30,450 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:03:30" (2/3) ... [2024-11-17 08:03:30,450 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@712bb175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.11 08:03:30, skipping insertion in model container [2024-11-17 08:03:30,450 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-17 08:03:30,451 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 08:03:30" (3/3) ... [2024-11-17 08:03:30,452 INFO L332 chiAutomizerObserver]: Analyzing ICFG Ex06.c [2024-11-17 08:03:30,501 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-17 08:03:30,502 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-17 08:03:30,502 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-17 08:03:30,502 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-17 08:03:30,503 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-17 08:03:30,503 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-17 08:03:30,503 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-17 08:03:30,503 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-17 08:03:30,507 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.4444444444444444) 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) [2024-11-17 08:03:30,520 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-11-17 08:03:30,521 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-17 08:03:30,521 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-17 08:03:30,526 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-17 08:03:30,526 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-17 08:03:30,529 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-17 08:03:30,529 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.4444444444444444) 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) [2024-11-17 08:03:30,530 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-11-17 08:03:30,531 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-17 08:03:30,531 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-17 08:03:30,531 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-17 08:03:30,532 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-17 08:03:30,539 INFO L745 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#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_~i~0#1;havoc main_~i~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 2#L9true [2024-11-17 08:03:30,540 INFO L747 eck$LassoCheckResult]: Loop: 2#L9true assume true; 9#L9-1true assume !!(main_~i~0#1 >= -5 && main_~i~0#1 <= 5); 10#L10true assume main_~i~0#1 > 0;main_~i~0#1 := main_~i~0#1 - 1; 7#L13true assume main_~i~0#1 < 0;main_~i~0#1 := 1 + main_~i~0#1; 2#L9true [2024-11-17 08:03:30,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:03:30,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1344, now seen corresponding path program 1 times [2024-11-17 08:03:30,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:03:30,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151112981] [2024-11-17 08:03:30,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:03:30,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:03:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:03:30,646 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:03:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:03:30,672 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:03:30,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:03:30,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1199486, now seen corresponding path program 1 times [2024-11-17 08:03:30,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:03:30,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251568851] [2024-11-17 08:03:30,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:03:30,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:03:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:03:30,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 08:03:30,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 08:03:30,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251568851] [2024-11-17 08:03:30,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251568851] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 08:03:30,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 08:03:30,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 08:03:30,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228359093] [2024-11-17 08:03:30,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 08:03:30,811 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-17 08:03:30,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 08:03:30,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 08:03:30,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 08:03:30,849 INFO L87 Difference]: Start difference. First operand has 10 states, 9 states have (on average 1.4444444444444444) 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) Second operand has 3 states, 2 states have (on average 2.0) 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) [2024-11-17 08:03:30,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 08:03:30,894 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2024-11-17 08:03:30,895 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 18 transitions. [2024-11-17 08:03:30,896 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2024-11-17 08:03:30,900 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 13 transitions. [2024-11-17 08:03:30,902 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2024-11-17 08:03:30,902 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2024-11-17 08:03:30,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2024-11-17 08:03:30,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-17 08:03:30,904 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2024-11-17 08:03:30,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2024-11-17 08:03:30,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2024-11-17 08:03:30,928 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) [2024-11-17 08:03:30,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2024-11-17 08:03:30,930 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2024-11-17 08:03:30,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 08:03:30,935 INFO L425 stractBuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2024-11-17 08:03:30,936 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-17 08:03:30,937 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2024-11-17 08:03:30,938 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2024-11-17 08:03:30,938 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-17 08:03:30,939 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-17 08:03:30,939 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-17 08:03:30,939 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-17 08:03:30,939 INFO L745 eck$LassoCheckResult]: Stem: 35#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 36#ULTIMATE.init_returnLabel#1 assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 33#L9 [2024-11-17 08:03:30,940 INFO L747 eck$LassoCheckResult]: Loop: 33#L9 assume true; 34#L9-1 assume !!(main_~i~0#1 >= -5 && main_~i~0#1 <= 5); 39#L10 assume !(main_~i~0#1 > 0); 40#L13 assume main_~i~0#1 < 0;main_~i~0#1 := 1 + main_~i~0#1; 33#L9 [2024-11-17 08:03:30,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:03:30,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1344, now seen corresponding path program 2 times [2024-11-17 08:03:30,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:03:30,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056703209] [2024-11-17 08:03:30,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:03:30,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:03:30,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:03:30,949 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:03:30,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:03:30,953 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:03:30,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:03:30,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1199517, now seen corresponding path program 1 times [2024-11-17 08:03:30,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:03:30,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388568624] [2024-11-17 08:03:30,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:03:30,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:03:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:03:30,963 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:03:30,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:03:30,971 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:03:30,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:03:30,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1241488220, now seen corresponding path program 1 times [2024-11-17 08:03:30,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:03:30,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897783597] [2024-11-17 08:03:30,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:03:30,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:03:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:03:30,985 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:03:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:03:30,991 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:03:31,061 INFO L204 LassoAnalysis]: Preferences: [2024-11-17 08:03:31,062 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-17 08:03:31,062 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-17 08:03:31,062 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-17 08:03:31,062 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-17 08:03:31,063 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:03:31,063 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-17 08:03:31,063 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-17 08:03:31,063 INFO L132 ssoRankerPreferences]: Filename of dumped script: Ex06.c_Iteration2_Loop [2024-11-17 08:03:31,063 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-17 08:03:31,063 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-17 08:03:31,080 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:03:31,089 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:03:31,093 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:03:31,163 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-17 08:03:31,164 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-17 08:03:31,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:03:31,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:03:31,168 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) [2024-11-17 08:03:31,170 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 [2024-11-17 08:03:31,171 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:03:31,171 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:03:31,198 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:03:31,198 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:03:31,213 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 [2024-11-17 08:03:31,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:03:31,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:03:31,216 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) [2024-11-17 08:03:31,217 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 [2024-11-17 08:03:31,220 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:03:31,221 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:03:31,247 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:03:31,247 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:03:31,259 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 [2024-11-17 08:03:31,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:03:31,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:03:31,267 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) [2024-11-17 08:03:31,269 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 [2024-11-17 08:03:31,273 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:03:31,273 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:03:31,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-11-17 08:03:31,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:03:31,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:03:31,301 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) [2024-11-17 08:03:31,302 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 [2024-11-17 08:03:31,304 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-17 08:03:31,304 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:03:31,319 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-17 08:03:31,334 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-11-17 08:03:31,334 INFO L204 LassoAnalysis]: Preferences: [2024-11-17 08:03:31,334 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-17 08:03:31,335 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-17 08:03:31,335 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-17 08:03:31,335 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-17 08:03:31,335 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:03:31,335 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-17 08:03:31,335 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-17 08:03:31,335 INFO L132 ssoRankerPreferences]: Filename of dumped script: Ex06.c_Iteration2_Loop [2024-11-17 08:03:31,335 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-17 08:03:31,335 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-17 08:03:31,340 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:03:31,346 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:03:31,352 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:03:31,418 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-17 08:03:31,422 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-17 08:03:31,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:03:31,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:03:31,425 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) [2024-11-17 08:03:31,425 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 [2024-11-17 08:03:31,427 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 [2024-11-17 08:03:31,437 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:03:31,438 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:03:31,438 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:03:31,438 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:03:31,442 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-17 08:03:31,442 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-17 08:03:31,451 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:03:31,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2024-11-17 08:03:31,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:03:31,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:03:31,465 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) [2024-11-17 08:03:31,467 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 [2024-11-17 08:03:31,469 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 [2024-11-17 08:03:31,482 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:03:31,482 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:03:31,483 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:03:31,483 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:03:31,489 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-17 08:03:31,489 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-17 08:03:31,497 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:03:31,511 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 [2024-11-17 08:03:31,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:03:31,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:03:31,514 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) [2024-11-17 08:03:31,517 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 [2024-11-17 08:03:31,518 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:03:31,532 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:03:31,532 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:03:31,533 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:03:31,533 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:03:31,533 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:03:31,536 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:03:31,536 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:03:31,542 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-17 08:03:31,545 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-17 08:03:31,546 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-17 08:03:31,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:03:31,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:03:31,571 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) [2024-11-17 08:03:31,573 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 [2024-11-17 08:03:31,573 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-17 08:03:31,573 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-17 08:03:31,574 INFO L474 LassoAnalysis]: Proved termination. [2024-11-17 08:03:31,574 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2024-11-17 08:03:31,584 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 [2024-11-17 08:03:31,588 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-17 08:03:31,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:03:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:03:31,619 WARN L253 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-17 08:03:31,620 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:03:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:03:31,630 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 08:03:31,630 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:03:31,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 08:03:31,641 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 [2024-11-17 08:03:31,642 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 08:03:31,671 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 22 states and 28 transitions. Complement of second has 5 states. [2024-11-17 08:03:31,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-17 08:03:31,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 08:03:31,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2024-11-17 08:03:31,675 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2024-11-17 08:03:31,675 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:03:31,676 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2024-11-17 08:03:31,676 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:03:31,676 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 2 letters. Loop has 8 letters. [2024-11-17 08:03:31,676 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:03:31,677 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 28 transitions. [2024-11-17 08:03:31,678 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2024-11-17 08:03:31,679 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 18 states and 23 transitions. [2024-11-17 08:03:31,679 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2024-11-17 08:03:31,680 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2024-11-17 08:03:31,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 23 transitions. [2024-11-17 08:03:31,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-17 08:03:31,680 INFO L218 hiAutomatonCegarLoop]: Abstraction has 18 states and 23 transitions. [2024-11-17 08:03:31,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 23 transitions. [2024-11-17 08:03:31,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 11. [2024-11-17 08:03:31,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 08:03:31,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2024-11-17 08:03:31,682 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11 states and 14 transitions. [2024-11-17 08:03:31,682 INFO L425 stractBuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2024-11-17 08:03:31,682 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-17 08:03:31,682 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2024-11-17 08:03:31,683 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-11-17 08:03:31,683 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-17 08:03:31,683 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-17 08:03:31,683 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-17 08:03:31,683 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-17 08:03:31,684 INFO L745 eck$LassoCheckResult]: Stem: 108#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 109#ULTIMATE.init_returnLabel#1 assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 112#L9 assume true; 103#L9-1 [2024-11-17 08:03:31,684 INFO L747 eck$LassoCheckResult]: Loop: 103#L9-1 assume !!(main_~i~0#1 >= -5 && main_~i~0#1 <= 5); 110#L10 assume main_~i~0#1 > 0;main_~i~0#1 := main_~i~0#1 - 1; 106#L13 assume !(main_~i~0#1 < 0); 102#L9 assume true; 103#L9-1 [2024-11-17 08:03:31,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:03:31,684 INFO L85 PathProgramCache]: Analyzing trace with hash 41673, now seen corresponding path program 1 times [2024-11-17 08:03:31,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:03:31,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656412929] [2024-11-17 08:03:31,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:03:31,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:03:31,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:03:31,688 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:03:31,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:03:31,689 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:03:31,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:03:31,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1166787, now seen corresponding path program 1 times [2024-11-17 08:03:31,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:03:31,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740435283] [2024-11-17 08:03:31,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:03:31,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:03:31,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:03:31,694 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:03:31,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:03:31,697 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:03:31,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:03:31,697 INFO L85 PathProgramCache]: Analyzing trace with hash -168571765, now seen corresponding path program 1 times [2024-11-17 08:03:31,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:03:31,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557376375] [2024-11-17 08:03:31,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:03:31,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:03:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:03:31,703 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:03:31,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:03:31,707 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:03:31,754 INFO L204 LassoAnalysis]: Preferences: [2024-11-17 08:03:31,754 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-17 08:03:31,754 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-17 08:03:31,754 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-17 08:03:31,754 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-17 08:03:31,754 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:03:31,754 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-17 08:03:31,754 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-17 08:03:31,754 INFO L132 ssoRankerPreferences]: Filename of dumped script: Ex06.c_Iteration3_Loop [2024-11-17 08:03:31,754 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-17 08:03:31,755 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-17 08:03:31,756 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:03:31,768 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:03:31,771 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:03:31,846 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 [2024-11-17 08:03:31,868 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-17 08:03:31,869 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-17 08:03:31,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:03:31,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:03:31,871 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:03:31,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-11-17 08:03:31,877 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:03:31,877 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:03:31,895 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:03:31,895 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:03:31,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2024-11-17 08:03:31,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:03:31,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:03:31,907 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:03:31,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-11-17 08:03:31,909 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:03:31,909 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:03:31,929 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:03:31,930 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:03:31,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2024-11-17 08:03:31,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:03:31,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:03:31,943 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:03:31,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-11-17 08:03:31,945 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:03:31,945 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:03:31,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2024-11-17 08:03:31,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:03:31,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:03:31,969 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:03:31,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-11-17 08:03:31,970 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-17 08:03:31,971 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:03:32,005 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-17 08:03:32,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2024-11-17 08:03:32,009 INFO L204 LassoAnalysis]: Preferences: [2024-11-17 08:03:32,010 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-17 08:03:32,010 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-17 08:03:32,010 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-17 08:03:32,010 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-17 08:03:32,010 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:03:32,010 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-17 08:03:32,010 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-17 08:03:32,010 INFO L132 ssoRankerPreferences]: Filename of dumped script: Ex06.c_Iteration3_Loop [2024-11-17 08:03:32,010 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-17 08:03:32,010 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-17 08:03:32,011 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:03:32,016 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:03:32,029 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:03:32,080 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-17 08:03:32,080 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-17 08:03:32,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:03:32,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:03:32,082 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:03:32,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-11-17 08:03:32,084 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 [2024-11-17 08:03:32,094 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:03:32,094 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:03:32,094 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:03:32,094 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:03:32,097 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-17 08:03:32,097 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-17 08:03:32,100 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:03:32,115 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2024-11-17 08:03:32,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:03:32,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:03:32,117 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:03:32,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-11-17 08:03:32,120 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 [2024-11-17 08:03:32,133 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:03:32,133 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:03:32,133 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:03:32,133 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:03:32,133 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:03:32,136 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:03:32,136 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:03:32,142 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-17 08:03:32,146 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-17 08:03:32,146 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-17 08:03:32,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:03:32,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:03:32,148 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:03:32,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-11-17 08:03:32,151 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-17 08:03:32,151 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-17 08:03:32,152 INFO L474 LassoAnalysis]: Proved termination. [2024-11-17 08:03:32,152 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2024-11-17 08:03:32,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2024-11-17 08:03:32,170 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-17 08:03:32,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:03:32,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:03:32,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-17 08:03:32,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:03:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:03:32,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 08:03:32,200 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:03:32,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 08:03:32,261 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-17 08:03:32,261 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 08:03:32,276 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 28 states and 34 transitions. Complement of second has 5 states. [2024-11-17 08:03:32,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-17 08:03:32,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 08:03:32,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2024-11-17 08:03:32,277 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 3 letters. Loop has 4 letters. [2024-11-17 08:03:32,278 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:03:32,278 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 4 letters. [2024-11-17 08:03:32,278 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:03:32,278 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 3 letters. Loop has 8 letters. [2024-11-17 08:03:32,278 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:03:32,278 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 34 transitions. [2024-11-17 08:03:32,279 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2024-11-17 08:03:32,280 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 26 states and 32 transitions. [2024-11-17 08:03:32,280 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2024-11-17 08:03:32,280 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2024-11-17 08:03:32,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 32 transitions. [2024-11-17 08:03:32,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-17 08:03:32,280 INFO L218 hiAutomatonCegarLoop]: Abstraction has 26 states and 32 transitions. [2024-11-17 08:03:32,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 32 transitions. [2024-11-17 08:03:32,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2024-11-17 08:03:32,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 20 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) [2024-11-17 08:03:32,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2024-11-17 08:03:32,283 INFO L240 hiAutomatonCegarLoop]: Abstraction has 21 states and 27 transitions. [2024-11-17 08:03:32,283 INFO L425 stractBuchiCegarLoop]: Abstraction has 21 states and 27 transitions. [2024-11-17 08:03:32,283 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-17 08:03:32,283 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 27 transitions. [2024-11-17 08:03:32,283 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2024-11-17 08:03:32,283 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-17 08:03:32,283 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-17 08:03:32,284 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-11-17 08:03:32,284 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-17 08:03:32,284 INFO L745 eck$LassoCheckResult]: Stem: 187#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 188#ULTIMATE.init_returnLabel#1 assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 182#L9 assume true; 183#L9-1 assume !!(main_~i~0#1 >= -5 && main_~i~0#1 <= 5); 194#L10 [2024-11-17 08:03:32,284 INFO L747 eck$LassoCheckResult]: Loop: 194#L10 assume !(main_~i~0#1 > 0); 189#L13 assume !(main_~i~0#1 < 0); 190#L9 assume true; 193#L9-1 assume !!(main_~i~0#1 >= -5 && main_~i~0#1 <= 5); 194#L10 [2024-11-17 08:03:32,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:03:32,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1291871, now seen corresponding path program 1 times [2024-11-17 08:03:32,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:03:32,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644046396] [2024-11-17 08:03:32,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:03:32,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:03:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:03:32,288 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:03:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:03:32,290 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:03:32,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:03:32,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1106398, now seen corresponding path program 1 times [2024-11-17 08:03:32,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:03:32,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613978710] [2024-11-17 08:03:32,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:03:32,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:03:32,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:03:32,295 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:03:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:03:32,297 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:03:32,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:03:32,298 INFO L85 PathProgramCache]: Analyzing trace with hash -930727620, now seen corresponding path program 1 times [2024-11-17 08:03:32,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:03:32,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004448414] [2024-11-17 08:03:32,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:03:32,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:03:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:03:32,312 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:03:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:03:32,316 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:03:32,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:03:32,365 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:03:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:03:32,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.11 08:03:32 BoogieIcfgContainer [2024-11-17 08:03:32,390 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-17 08:03:32,390 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-17 08:03:32,390 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-17 08:03:32,391 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-17 08:03:32,391 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 08:03:30" (3/4) ... [2024-11-17 08:03:32,393 INFO L140 WitnessPrinter]: Generating witness for non-termination counterexample [2024-11-17 08:03:32,427 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-17 08:03:32,427 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-17 08:03:32,431 INFO L158 Benchmark]: Toolchain (without parser) took 2486.39ms. Allocated memory is still 176.2MB. Free memory was 135.6MB in the beginning and 118.1MB in the end (delta: 17.4MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. [2024-11-17 08:03:32,431 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 117.4MB. Free memory is still 91.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 08:03:32,431 INFO L158 Benchmark]: CACSL2BoogieTranslator took 231.44ms. Allocated memory is still 176.2MB. Free memory was 135.6MB in the beginning and 124.6MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-17 08:03:32,432 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.81ms. Allocated memory is still 176.2MB. Free memory was 124.6MB in the beginning and 123.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-17 08:03:32,432 INFO L158 Benchmark]: Boogie Preprocessor took 18.99ms. Allocated memory is still 176.2MB. Free memory was 123.0MB in the beginning and 121.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-17 08:03:32,432 INFO L158 Benchmark]: IcfgBuilder took 218.67ms. Allocated memory is still 176.2MB. Free memory was 121.7MB in the beginning and 112.5MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-17 08:03:32,433 INFO L158 Benchmark]: BuchiAutomizer took 1946.09ms. Allocated memory is still 176.2MB. Free memory was 112.5MB in the beginning and 119.2MB in the end (delta: -6.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 08:03:32,433 INFO L158 Benchmark]: Witness Printer took 36.62ms. Allocated memory is still 176.2MB. Free memory was 119.2MB in the beginning and 118.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 08:03:32,439 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 117.4MB. Free memory is still 91.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 231.44ms. Allocated memory is still 176.2MB. Free memory was 135.6MB in the beginning and 124.6MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.81ms. Allocated memory is still 176.2MB. Free memory was 124.6MB in the beginning and 123.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.99ms. Allocated memory is still 176.2MB. Free memory was 123.0MB in the beginning and 121.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 218.67ms. Allocated memory is still 176.2MB. Free memory was 121.7MB in the beginning and 112.5MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1946.09ms. Allocated memory is still 176.2MB. Free memory was 112.5MB in the beginning and 119.2MB in the end (delta: -6.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 36.62ms. Allocated memory is still 176.2MB. Free memory was 119.2MB in the beginning and 118.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function ((long) -1 * i) and consists of 3 locations. One deterministic module has affine ranking function i and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 21 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.8s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32 IncrementalHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 19 mSDtfsCounter, 32 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax181 hnf100 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq140 hnf95 smp100 dnf100 smp100 tf110 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 27ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 10]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE i >= -5 && i <= 5 VAL [i=0] Loop: [L10] COND FALSE !(i > 0) [L13] COND FALSE !(i < 0) [L9] COND TRUE i >= -5 && i <= 5 End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 10]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE i >= -5 && i <= 5 VAL [i=0] Loop: [L10] COND FALSE !(i > 0) [L13] COND FALSE !(i < 0) [L9] COND TRUE i >= -5 && i <= 5 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2024-11-17 08:03:32,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-11-17 08:03:32,667 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)