./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/AlternKonv.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8be7027f 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/AlternKonv.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 9816d5cc9e8c1fba9291af90498afaa319416e5c56fa3cf3ce8da9d63d3e9939 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 20:54:11,130 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 20:54:11,222 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-12 20:54:11,230 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 20:54:11,234 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 20:54:11,261 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 20:54:11,263 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 20:54:11,264 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 20:54:11,264 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 20:54:11,265 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 20:54:11,266 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 20:54:11,266 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 20:54:11,266 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 20:54:11,268 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-12 20:54:11,268 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-12 20:54:11,269 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-12 20:54:11,270 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-12 20:54:11,270 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-12 20:54:11,270 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-12 20:54:11,271 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 20:54:11,271 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-12 20:54:11,273 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 20:54:11,273 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 20:54:11,274 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-12 20:54:11,274 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-12 20:54:11,274 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-12 20:54:11,275 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 20:54:11,275 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 20:54:11,275 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 20:54:11,275 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-12 20:54:11,276 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 20:54:11,276 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 20:54:11,276 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 20:54:11,277 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 20:54:11,277 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 20:54:11,277 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-12 20:54:11,278 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9816d5cc9e8c1fba9291af90498afaa319416e5c56fa3cf3ce8da9d63d3e9939 [2024-11-12 20:54:11,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 20:54:11,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 20:54:11,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 20:54:11,539 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 20:54:11,540 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 20:54:11,541 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/AlternKonv.c [2024-11-12 20:54:12,885 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 20:54:13,059 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 20:54:13,059 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/AlternKonv.c [2024-11-12 20:54:13,065 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcea82e2d/821fbf2838e342e2b8d854b9b82c97fc/FLAG3151bc7bd [2024-11-12 20:54:13,080 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcea82e2d/821fbf2838e342e2b8d854b9b82c97fc [2024-11-12 20:54:13,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 20:54:13,084 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 20:54:13,089 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 20:54:13,089 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 20:54:13,095 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 20:54:13,095 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:54:13" (1/1) ... [2024-11-12 20:54:13,096 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f0962d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:54:13, skipping insertion in model container [2024-11-12 20:54:13,096 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:54:13" (1/1) ... [2024-11-12 20:54:13,113 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 20:54:13,265 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:54:13,269 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 20:54:13,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:54:13,299 INFO L204 MainTranslator]: Completed translation [2024-11-12 20:54:13,306 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:54:13 WrapperNode [2024-11-12 20:54:13,306 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 20:54:13,307 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 20:54:13,308 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 20:54:13,308 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 20:54:13,315 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:54:13" (1/1) ... [2024-11-12 20:54:13,320 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:54:13" (1/1) ... [2024-11-12 20:54:13,337 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2024-11-12 20:54:13,337 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 20:54:13,338 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 20:54:13,358 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 20:54:13,358 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 20:54:13,371 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:54:13" (1/1) ... [2024-11-12 20:54:13,372 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:54:13" (1/1) ... [2024-11-12 20:54:13,372 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:54:13" (1/1) ... [2024-11-12 20:54:13,378 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-12 20:54:13,378 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:54:13" (1/1) ... [2024-11-12 20:54:13,378 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:54:13" (1/1) ... [2024-11-12 20:54:13,379 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:54:13" (1/1) ... [2024-11-12 20:54:13,384 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:54:13" (1/1) ... [2024-11-12 20:54:13,385 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:54:13" (1/1) ... [2024-11-12 20:54:13,386 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:54:13" (1/1) ... [2024-11-12 20:54:13,387 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 20:54:13,388 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 20:54:13,388 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 20:54:13,388 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 20:54:13,389 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:54:13" (1/1) ... [2024-11-12 20:54:13,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:54:13,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:54:13,425 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) [2024-11-12 20:54:13,432 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 [2024-11-12 20:54:13,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 20:54:13,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 20:54:13,551 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 20:54:13,554 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 20:54:13,610 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-11-12 20:54:13,610 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 20:54:13,620 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 20:54:13,621 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-12 20:54:13,621 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:54:13 BoogieIcfgContainer [2024-11-12 20:54:13,621 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 20:54:13,622 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-12 20:54:13,622 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-12 20:54:13,626 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-12 20:54:13,627 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-12 20:54:13,627 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 12.11 08:54:13" (1/3) ... [2024-11-12 20:54:13,628 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@23ae3890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.11 08:54:13, skipping insertion in model container [2024-11-12 20:54:13,628 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-12 20:54:13,629 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:54:13" (2/3) ... [2024-11-12 20:54:13,629 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@23ae3890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.11 08:54:13, skipping insertion in model container [2024-11-12 20:54:13,629 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-12 20:54:13,629 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:54:13" (3/3) ... [2024-11-12 20:54:13,631 INFO L332 chiAutomizerObserver]: Analyzing ICFG AlternKonv.c [2024-11-12 20:54:13,690 INFO L301 stractBuchiCegarLoop]: Interprodecural is true [2024-11-12 20:54:13,691 INFO L302 stractBuchiCegarLoop]: Hoare is None [2024-11-12 20:54:13,691 INFO L303 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-12 20:54:13,691 INFO L304 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-12 20:54:13,691 INFO L305 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-12 20:54:13,691 INFO L306 stractBuchiCegarLoop]: Difference is false [2024-11-12 20:54:13,691 INFO L307 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-12 20:54:13,692 INFO L311 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-12 20:54:13,696 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:54:13,713 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-12 20:54:13,713 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-12 20:54:13,714 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-12 20:54:13,720 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-12 20:54:13,720 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-12 20:54:13,720 INFO L333 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-12 20:54:13,720 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:54:13,721 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-12 20:54:13,721 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-12 20:54:13,722 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-12 20:54:13,722 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-12 20:54:13,722 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-12 20:54:13,727 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } 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;" [2024-11-12 20:54:13,728 INFO L749 eck$LassoCheckResult]: Loop: "assume !!(0 != main_~i~0#1);" "assume !(main_~i~0#1 < 0);main_~i~0#1 := main_~i~0#1 - 2;" "assume !(main_~i~0#1 > 0);" [2024-11-12 20:54:13,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:54:13,733 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-11-12 20:54:13,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:54:13,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453317349] [2024-11-12 20:54:13,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:54:13,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:54:13,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:54:13,814 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:54:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:54:13,830 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:54:13,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:54:13,833 INFO L85 PathProgramCache]: Analyzing trace with hash 41231, now seen corresponding path program 1 times [2024-11-12 20:54:13,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:54:13,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861681137] [2024-11-12 20:54:13,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:54:13,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:54:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:54:13,844 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:54:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:54:13,854 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:54:13,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:54:13,856 INFO L85 PathProgramCache]: Analyzing trace with hash 28700173, now seen corresponding path program 1 times [2024-11-12 20:54:13,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:54:13,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163659746] [2024-11-12 20:54:13,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:54:13,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:54:13,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:54:13,870 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:54:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:54:13,878 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:54:13,956 INFO L204 LassoAnalysis]: Preferences: [2024-11-12 20:54:13,956 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-12 20:54:13,956 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-12 20:54:13,956 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-12 20:54:13,956 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-12 20:54:13,956 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:54:13,956 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-12 20:54:13,957 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-12 20:54:13,957 INFO L132 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration1_Loop [2024-11-12 20:54:13,957 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-12 20:54:13,957 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-12 20:54:13,968 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:54:13,976 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:54:13,980 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:54:14,063 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-12 20:54:14,064 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-12 20:54:14,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:54:14,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:54:14,068 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) [2024-11-12 20:54:14,070 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 [2024-11-12 20:54:14,072 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-12 20:54:14,072 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-12 20:54:14,102 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-12 20:54:14,102 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: [] [2024-11-12 20:54:14,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2024-11-12 20:54:14,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:54:14,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:54:14,116 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) [2024-11-12 20:54:14,118 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 [2024-11-12 20:54:14,120 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-12 20:54:14,121 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-12 20:54:14,140 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-12 20:54:14,140 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: [] [2024-11-12 20:54:14,156 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 [2024-11-12 20:54:14,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:54:14,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:54:14,159 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) [2024-11-12 20:54:14,160 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 [2024-11-12 20:54:14,161 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-12 20:54:14,161 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-12 20:54:14,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2024-11-12 20:54:14,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:54:14,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:54:14,189 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) [2024-11-12 20:54:14,189 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 [2024-11-12 20:54:14,190 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-12 20:54:14,190 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-12 20:54:14,219 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-12 20:54:14,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2024-11-12 20:54:14,224 INFO L204 LassoAnalysis]: Preferences: [2024-11-12 20:54:14,224 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-12 20:54:14,224 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-12 20:54:14,224 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-12 20:54:14,224 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-12 20:54:14,224 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:54:14,224 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-12 20:54:14,224 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-12 20:54:14,224 INFO L132 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration1_Loop [2024-11-12 20:54:14,225 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-12 20:54:14,225 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-12 20:54:14,226 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:54:14,232 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:54:14,235 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:54:14,306 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-12 20:54:14,310 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-12 20:54:14,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:54:14,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:54:14,313 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) [2024-11-12 20:54:14,315 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 [2024-11-12 20:54:14,316 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 [2024-11-12 20:54:14,326 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-12 20:54:14,326 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-12 20:54:14,326 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-12 20:54:14,326 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-12 20:54:14,330 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-12 20:54:14,330 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-12 20:54:14,336 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-12 20:54:14,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2024-11-12 20:54:14,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:54:14,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:54:14,353 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) [2024-11-12 20:54:14,355 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 [2024-11-12 20:54:14,357 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 [2024-11-12 20:54:14,367 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-12 20:54:14,368 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-12 20:54:14,368 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-12 20:54:14,368 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-12 20:54:14,371 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-12 20:54:14,371 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-12 20:54:14,376 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-12 20:54:14,391 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 [2024-11-12 20:54:14,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:54:14,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:54:14,393 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) [2024-11-12 20:54:14,395 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 [2024-11-12 20:54:14,396 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 [2024-11-12 20:54:14,406 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-12 20:54:14,407 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-12 20:54:14,407 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-12 20:54:14,407 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-12 20:54:14,407 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-12 20:54:14,409 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-12 20:54:14,409 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-12 20:54:14,412 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-12 20:54:14,414 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-11-12 20:54:14,414 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-12 20:54:14,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:54:14,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:54:14,441 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) [2024-11-12 20:54:14,443 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 [2024-11-12 20:54:14,443 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-12 20:54:14,444 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-12 20:54:14,444 INFO L474 LassoAnalysis]: Proved termination. [2024-11-12 20:54:14,444 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 [] [2024-11-12 20:54:14,455 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 [2024-11-12 20:54:14,458 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-12 20:54:14,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:54:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:54:14,488 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-12 20:54:14,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:54:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:54:14,502 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 20:54:14,503 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:54:14,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:54:14,592 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 [2024-11-12 20:54:14,593 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:54:14,633 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 24 states and 38 transitions. Complement of second has 6 states. [2024-11-12 20:54:14,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-12 20:54:14,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:54:14,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2024-11-12 20:54:14,643 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 2 letters. Loop has 3 letters. [2024-11-12 20:54:14,644 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-12 20:54:14,644 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 5 letters. Loop has 3 letters. [2024-11-12 20:54:14,644 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-12 20:54:14,645 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 2 letters. Loop has 6 letters. [2024-11-12 20:54:14,645 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-12 20:54:14,646 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 38 transitions. [2024-11-12 20:54:14,648 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-12 20:54:14,650 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 15 states and 22 transitions. [2024-11-12 20:54:14,651 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2024-11-12 20:54:14,651 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2024-11-12 20:54:14,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 22 transitions. [2024-11-12 20:54:14,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-12 20:54:14,652 INFO L218 hiAutomatonCegarLoop]: Abstraction has 15 states and 22 transitions. [2024-11-12 20:54:14,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 22 transitions. [2024-11-12 20:54:14,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2024-11-12 20:54:14,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.5) internal successors, (21), 13 states have internal predecessors, (21), 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) [2024-11-12 20:54:14,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 21 transitions. [2024-11-12 20:54:14,671 INFO L240 hiAutomatonCegarLoop]: Abstraction has 14 states and 21 transitions. [2024-11-12 20:54:14,671 INFO L426 stractBuchiCegarLoop]: Abstraction has 14 states and 21 transitions. [2024-11-12 20:54:14,671 INFO L333 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-12 20:54:14,671 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 21 transitions. [2024-11-12 20:54:14,672 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-12 20:54:14,672 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-12 20:54:14,672 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-12 20:54:14,672 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-11-12 20:54:14,672 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-12 20:54:14,673 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } 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;" "assume !!(0 != main_~i~0#1);" "assume main_~i~0#1 < 0;main_~i~0#1 := 2 + main_~i~0#1;" [2024-11-12 20:54:14,673 INFO L749 eck$LassoCheckResult]: Loop: "assume !(main_~i~0#1 < 0);" "assume !!(0 != main_~i~0#1);" "assume main_~i~0#1 < 0;main_~i~0#1 := 2 + main_~i~0#1;" [2024-11-12 20:54:14,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:54:14,674 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2024-11-12 20:54:14,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:54:14,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389948604] [2024-11-12 20:54:14,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:54:14,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:54:14,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:54:14,680 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:54:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:54:14,683 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:54:14,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:54:14,684 INFO L85 PathProgramCache]: Analyzing trace with hash 53210, now seen corresponding path program 1 times [2024-11-12 20:54:14,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:54:14,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110036958] [2024-11-12 20:54:14,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:54:14,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:54:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:54:14,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:54:14,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110036958] [2024-11-12 20:54:14,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110036958] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:54:14,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279199555] [2024-11-12 20:54:14,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:54:14,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:54:14,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:54:14,743 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:54:14,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-12 20:54:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:54:14,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-12 20:54:14,776 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:54:14,785 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:54:14,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279199555] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:54:14,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:54:14,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1, 1, 1] total 1 [2024-11-12 20:54:14,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125362926] [2024-11-12 20:54:14,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:54:14,800 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-12 20:54:14,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:54:14,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:54:14,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:54:14,804 INFO L87 Difference]: Start difference. First operand 14 states and 21 transitions. cyclomatic complexity: 9 Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:54:14,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 20:54:14,825 INFO L93 Difference]: Finished difference Result 16 states and 23 transitions. [2024-11-12 20:54:14,825 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2024-11-12 20:54:14,826 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2024-11-12 20:54:14,826 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 16 states and 23 transitions. [2024-11-12 20:54:14,826 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2024-11-12 20:54:14,827 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2024-11-12 20:54:14,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 23 transitions. [2024-11-12 20:54:14,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-12 20:54:14,827 INFO L218 hiAutomatonCegarLoop]: Abstraction has 16 states and 23 transitions. [2024-11-12 20:54:14,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 23 transitions. [2024-11-12 20:54:14,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-12 20:54:14,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.4375) internal successors, (23), 15 states have internal predecessors, (23), 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) [2024-11-12 20:54:14,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 23 transitions. [2024-11-12 20:54:14,830 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 23 transitions. [2024-11-12 20:54:14,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:54:14,831 INFO L426 stractBuchiCegarLoop]: Abstraction has 16 states and 23 transitions. [2024-11-12 20:54:14,831 INFO L333 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-12 20:54:14,831 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 23 transitions. [2024-11-12 20:54:14,832 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2024-11-12 20:54:14,832 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-12 20:54:14,832 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-12 20:54:14,832 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-11-12 20:54:14,832 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-12 20:54:14,833 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;" "assume !!(0 != main_~i~0#1);" "assume main_~i~0#1 < 0;main_~i~0#1 := 2 + main_~i~0#1;" [2024-11-12 20:54:14,833 INFO L749 eck$LassoCheckResult]: Loop: "assume main_~i~0#1 < 0;" "assume !(main_~i~0#1 <= -2147483648);main_~i~0#1 := -1 * main_~i~0#1;" "assume !!(0 != main_~i~0#1);" "assume main_~i~0#1 < 0;main_~i~0#1 := 2 + main_~i~0#1;" [2024-11-12 20:54:14,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:54:14,833 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 2 times [2024-11-12 20:54:14,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:54:14,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783697518] [2024-11-12 20:54:14,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:54:14,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:54:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:54:14,838 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:54:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:54:14,841 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:54:14,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:54:14,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1451465, now seen corresponding path program 1 times [2024-11-12 20:54:14,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:54:14,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962705517] [2024-11-12 20:54:14,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:54:14,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:54:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:54:14,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:54:14,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962705517] [2024-11-12 20:54:14,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962705517] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:54:14,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103366796] [2024-11-12 20:54:14,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:54:14,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:54:14,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:54:14,888 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:54:14,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-12 20:54:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:54:14,918 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-12 20:54:14,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:54:14,928 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:54:14,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103366796] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:54:14,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:54:14,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2024-11-12 20:54:14,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037137243] [2024-11-12 20:54:14,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:54:14,954 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-12 20:54:14,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:54:14,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:54:14,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-12 20:54:14,954 INFO L87 Difference]: Start difference. First operand 16 states and 23 transitions. cyclomatic complexity: 9 Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:54:14,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 20:54:14,999 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2024-11-12 20:54:14,999 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 26 transitions. [2024-11-12 20:54:15,000 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2024-11-12 20:54:15,001 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 19 states and 23 transitions. [2024-11-12 20:54:15,001 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2024-11-12 20:54:15,002 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2024-11-12 20:54:15,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 23 transitions. [2024-11-12 20:54:15,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-12 20:54:15,003 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 23 transitions. [2024-11-12 20:54:15,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 23 transitions. [2024-11-12 20:54:15,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 10. [2024-11-12 20:54:15,005 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) [2024-11-12 20:54:15,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2024-11-12 20:54:15,006 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2024-11-12 20:54:15,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:54:15,007 INFO L426 stractBuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2024-11-12 20:54:15,007 INFO L333 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-12 20:54:15,007 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2024-11-12 20:54:15,007 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2024-11-12 20:54:15,007 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-12 20:54:15,007 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-12 20:54:15,008 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-12 20:54:15,008 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1] [2024-11-12 20:54:15,008 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } 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;" "assume !!(0 != main_~i~0#1);" [2024-11-12 20:54:15,008 INFO L749 eck$LassoCheckResult]: Loop: "assume main_~i~0#1 < 0;main_~i~0#1 := 2 + main_~i~0#1;" "assume !(main_~i~0#1 < 0);" "assume !!(0 != main_~i~0#1);" "assume !(main_~i~0#1 < 0);main_~i~0#1 := main_~i~0#1 - 2;" "assume !(main_~i~0#1 > 0);" "assume !!(0 != main_~i~0#1);" [2024-11-12 20:54:15,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:54:15,008 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2024-11-12 20:54:15,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:54:15,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669440272] [2024-11-12 20:54:15,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:54:15,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:54:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:54:15,016 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:54:15,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:54:15,019 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:54:15,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:54:15,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1310830950, now seen corresponding path program 1 times [2024-11-12 20:54:15,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:54:15,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066273324] [2024-11-12 20:54:15,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:54:15,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:54:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:54:15,026 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:54:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:54:15,030 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:54:15,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:54:15,030 INFO L85 PathProgramCache]: Analyzing trace with hash 590073037, now seen corresponding path program 1 times [2024-11-12 20:54:15,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:54:15,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886519286] [2024-11-12 20:54:15,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:54:15,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:54:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:54:15,035 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:54:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:54:15,039 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:54:15,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2024-11-12 20:54:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:54:15,134 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:54:15,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:54:15,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.11 08:54:15 BoogieIcfgContainer [2024-11-12 20:54:15,157 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-12 20:54:15,158 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-12 20:54:15,158 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-12 20:54:15,158 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-12 20:54:15,159 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:54:13" (3/4) ... [2024-11-12 20:54:15,161 INFO L139 WitnessPrinter]: Generating witness for non-termination counterexample [2024-11-12 20:54:15,197 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-12 20:54:15,197 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-12 20:54:15,198 INFO L158 Benchmark]: Toolchain (without parser) took 2113.35ms. Allocated memory is still 169.9MB. Free memory was 114.4MB in the beginning and 132.9MB in the end (delta: -18.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 20:54:15,198 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory is still 51.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 20:54:15,200 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.07ms. Allocated memory is still 169.9MB. Free memory was 114.4MB in the beginning and 142.9MB in the end (delta: -28.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-12 20:54:15,202 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.91ms. Allocated memory is still 169.9MB. Free memory was 142.9MB in the beginning and 141.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-12 20:54:15,202 INFO L158 Benchmark]: Boogie Preprocessor took 49.18ms. Allocated memory is still 169.9MB. Free memory was 141.8MB in the beginning and 140.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-12 20:54:15,203 INFO L158 Benchmark]: RCFGBuilder took 233.80ms. Allocated memory is still 169.9MB. Free memory was 139.8MB in the beginning and 131.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-12 20:54:15,203 INFO L158 Benchmark]: BuchiAutomizer took 1535.09ms. Allocated memory is still 169.9MB. Free memory was 131.4MB in the beginning and 135.0MB in the end (delta: -3.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 20:54:15,203 INFO L158 Benchmark]: Witness Printer took 39.17ms. Allocated memory is still 169.9MB. Free memory was 135.0MB in the beginning and 132.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-12 20:54:15,205 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory is still 51.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 217.07ms. Allocated memory is still 169.9MB. Free memory was 114.4MB in the beginning and 142.9MB in the end (delta: -28.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.91ms. Allocated memory is still 169.9MB. Free memory was 142.9MB in the beginning and 141.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.18ms. Allocated memory is still 169.9MB. Free memory was 141.8MB in the beginning and 140.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 233.80ms. Allocated memory is still 169.9MB. Free memory was 139.8MB in the beginning and 131.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1535.09ms. Allocated memory is still 169.9MB. Free memory was 131.4MB in the beginning and 135.0MB in the end (delta: -3.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 39.17ms. Allocated memory is still 169.9MB. Free memory was 135.0MB in the beginning and 132.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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 (2 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function i and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.4s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 10 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 [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 63 IncrementalHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 21 mSDtfsCounter, 63 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax170 hnf100 lsp58 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq158 hnf96 smp69 dnf100 smp100 tf111 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 25ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s 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 != 0 VAL [i=-1] Loop: [L10] COND TRUE i < 0 [L11] i = i+2 [L12] COND FALSE !(i < 0) [L9] COND TRUE i != 0 [L10] COND FALSE !(i < 0) [L17] i = i-2 [L18] COND FALSE !(i > 0) [L9] COND TRUE i != 0 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 != 0 VAL [i=-1] Loop: [L10] COND TRUE i < 0 [L11] i = i+2 [L12] COND FALSE !(i < 0) [L9] COND TRUE i != 0 [L10] COND FALSE !(i < 0) [L17] i = i-2 [L18] COND FALSE !(i > 0) [L9] COND TRUE i != 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2024-11-12 20:54:15,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-12 20:54:15,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-12 20:54:15,636 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)