./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/aviad.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted-lit/aviad.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.graphml --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 212c9b1b6a93f8f17548e7937584929a6b6ed1677eb6287f5deae898fbaeb3a4 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 21:56:37,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 21:56:37,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 21:56:37,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 21:56:37,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 21:56:37,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 21:56:37,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 21:56:37,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 21:56:37,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 21:56:37,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 21:56:37,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 21:56:37,910 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 21:56:37,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 21:56:37,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 21:56:37,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 21:56:37,914 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 21:56:37,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 21:56:37,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 21:56:37,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 21:56:37,922 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 21:56:37,923 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 21:56:37,924 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 21:56:37,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 21:56:37,926 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 21:56:37,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 21:56:37,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 21:56:37,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 21:56:37,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 21:56:37,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 21:56:37,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 21:56:37,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 21:56:37,931 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 21:56:37,932 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 21:56:37,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 21:56:37,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 21:56:37,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 21:56:37,934 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 21:56:37,934 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 21:56:37,934 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 21:56:37,935 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 21:56:37,935 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 21:56:37,936 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-21 21:56:37,962 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 21:56:37,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 21:56:37,964 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 21:56:37,964 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 21:56:37,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 21:56:37,965 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 21:56:37,965 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 21:56:37,966 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-21 21:56:37,966 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-21 21:56:37,966 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-21 21:56:37,966 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-21 21:56:37,967 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-21 21:56:37,967 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-21 21:56:37,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 21:56:37,967 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 21:56:37,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 21:56:37,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 21:56:37,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-21 21:56:37,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-21 21:56:37,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-21 21:56:37,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 21:56:37,968 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-21 21:56:37,968 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 21:56:37,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-21 21:56:37,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 21:56:37,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 21:56:37,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 21:56:37,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 21:56:37,970 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 21:56:37,970 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-21 21:56:37,971 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 212c9b1b6a93f8f17548e7937584929a6b6ed1677eb6287f5deae898fbaeb3a4 [2021-12-21 21:56:38,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 21:56:38,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 21:56:38,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 21:56:38,226 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 21:56:38,227 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 21:56:38,228 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/aviad.c [2021-12-21 21:56:38,267 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12e792c4e/91248875cf5f47e58ea83d434fc5bb29/FLAGd27fa7295 [2021-12-21 21:56:38,602 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 21:56:38,603 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/aviad.c [2021-12-21 21:56:38,615 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12e792c4e/91248875cf5f47e58ea83d434fc5bb29/FLAGd27fa7295 [2021-12-21 21:56:38,628 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12e792c4e/91248875cf5f47e58ea83d434fc5bb29 [2021-12-21 21:56:38,631 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 21:56:38,632 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 21:56:38,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 21:56:38,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 21:56:38,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 21:56:38,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:56:38" (1/1) ... [2021-12-21 21:56:38,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4856309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:56:38, skipping insertion in model container [2021-12-21 21:56:38,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:56:38" (1/1) ... [2021-12-21 21:56:38,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 21:56:38,655 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 21:56:38,754 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 21:56:38,756 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 21:56:38,769 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 21:56:38,777 INFO L208 MainTranslator]: Completed translation [2021-12-21 21:56:38,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:56:38 WrapperNode [2021-12-21 21:56:38,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 21:56:38,783 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 21:56:38,785 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 21:56:38,785 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 21:56:38,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:56:38" (1/1) ... [2021-12-21 21:56:38,794 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:56:38" (1/1) ... [2021-12-21 21:56:38,805 INFO L137 Inliner]: procedures = 5, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 25 [2021-12-21 21:56:38,806 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 21:56:38,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 21:56:38,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 21:56:38,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 21:56:38,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:56:38" (1/1) ... [2021-12-21 21:56:38,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:56:38" (1/1) ... [2021-12-21 21:56:38,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:56:38" (1/1) ... [2021-12-21 21:56:38,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:56:38" (1/1) ... [2021-12-21 21:56:38,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:56:38" (1/1) ... [2021-12-21 21:56:38,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:56:38" (1/1) ... [2021-12-21 21:56:38,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:56:38" (1/1) ... [2021-12-21 21:56:38,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 21:56:38,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 21:56:38,822 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 21:56:38,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 21:56:38,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:56:38" (1/1) ... [2021-12-21 21:56:38,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:38,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:38,844 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) [2021-12-21 21:56:38,875 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 [2021-12-21 21:56:38,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 21:56:38,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 21:56:38,919 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 21:56:38,920 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 21:56:39,015 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 21:56:39,021 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 21:56:39,021 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 21:56:39,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:56:39 BoogieIcfgContainer [2021-12-21 21:56:39,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 21:56:39,024 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-21 21:56:39,024 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-21 21:56:39,027 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-21 21:56:39,027 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 21:56:39,028 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.12 09:56:38" (1/3) ... [2021-12-21 21:56:39,028 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@41648c85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 09:56:39, skipping insertion in model container [2021-12-21 21:56:39,028 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 21:56:39,028 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:56:38" (2/3) ... [2021-12-21 21:56:39,029 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@41648c85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 09:56:39, skipping insertion in model container [2021-12-21 21:56:39,029 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 21:56:39,029 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:56:39" (3/3) ... [2021-12-21 21:56:39,030 INFO L388 chiAutomizerObserver]: Analyzing ICFG aviad.c [2021-12-21 21:56:39,080 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-21 21:56:39,080 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-21 21:56:39,080 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-21 21:56:39,080 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-21 21:56:39,080 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-21 21:56:39,081 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-21 21:56:39,081 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-21 21:56:39,081 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-21 21:56:39,090 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:56:39,101 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-21 21:56:39,101 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 21:56:39,101 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 21:56:39,105 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-21 21:56:39,105 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-21 21:56:39,105 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-21 21:56:39,106 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:56:39,107 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-21 21:56:39,107 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 21:56:39,107 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 21:56:39,107 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-21 21:56:39,107 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-21 21:56:39,112 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~ret2#1, main_~x~0#1, main_~count~1#1;main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;assume { :begin_inline_f } true;f_#in~a#1 := main_~x~0#1;havoc f_#res#1;havoc f_#t~post0#1, f_~a#1, f_~tmp~0#1, f_~count~0#1;f_~a#1 := f_#in~a#1;havoc f_~tmp~0#1;f_~count~0#1 := 0; 11#L11-2true [2021-12-21 21:56:39,112 INFO L793 eck$LassoCheckResult]: Loop: 11#L11-2true assume !!(f_~a#1 > 1);f_~tmp~0#1 := (if f_~a#1 < 0 && 0 != f_~a#1 % 2 then f_~a#1 % 2 - 2 else f_~a#1 % 2); 6#L13true assume !(0 == f_~tmp~0#1);f_~a#1 := f_~a#1 - 1; 7#L13-2true f_#t~post0#1 := f_~count~0#1;f_~count~0#1 := 1 + f_#t~post0#1;havoc f_#t~post0#1; 11#L11-2true [2021-12-21 21:56:39,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:39,118 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-21 21:56:39,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:56:39,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773603551] [2021-12-21 21:56:39,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:56:39,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:56:39,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:39,177 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:56:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:39,196 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:56:39,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:39,198 INFO L85 PathProgramCache]: Analyzing trace with hash 40876, now seen corresponding path program 1 times [2021-12-21 21:56:39,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:56:39,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168307241] [2021-12-21 21:56:39,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:56:39,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:56:39,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:39,228 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:56:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:39,248 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:56:39,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:39,249 INFO L85 PathProgramCache]: Analyzing trace with hash 28699818, now seen corresponding path program 1 times [2021-12-21 21:56:39,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:56:39,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309434224] [2021-12-21 21:56:39,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:56:39,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:56:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:39,269 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:56:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:39,284 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:56:39,386 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 21:56:39,387 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 21:56:39,387 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 21:56:39,387 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 21:56:39,387 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-21 21:56:39,387 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:39,387 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 21:56:39,388 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 21:56:39,388 INFO L133 ssoRankerPreferences]: Filename of dumped script: aviad.c_Iteration1_Loop [2021-12-21 21:56:39,388 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 21:56:39,388 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 21:56:39,400 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:39,407 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:39,410 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:39,520 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 21:56:39,520 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-21 21:56:39,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:39,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:39,523 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) [2021-12-21 21:56:39,527 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:56:39,527 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:56:39,528 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 [2021-12-21 21:56:39,576 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 [2021-12-21 21:56:39,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:39,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:39,577 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) [2021-12-21 21:56:39,579 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 [2021-12-21 21:56:39,580 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 21:56:39,580 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:56:39,603 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:56:39,603 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_f_~count~0#1=0} Honda state: {ULTIMATE.start_f_~count~0#1=0} Generalized eigenvectors: [{ULTIMATE.start_f_~count~0#1=3}, {ULTIMATE.start_f_~count~0#1=-1}, {ULTIMATE.start_f_~count~0#1=-1}] Lambdas: [1, 0, 1] Nus: [0, 1] [2021-12-21 21:56:39,624 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 [2021-12-21 21:56:39,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:39,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:39,625 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) [2021-12-21 21:56:39,639 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 [2021-12-21 21:56:39,640 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:56:39,640 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:56:39,658 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:56:39,658 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_f_#t~post0#1=0} Honda state: {ULTIMATE.start_f_#t~post0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:56:39,676 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 [2021-12-21 21:56:39,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:39,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:39,677 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) [2021-12-21 21:56:39,679 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 [2021-12-21 21:56:39,680 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:56:39,680 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:56:39,718 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 [2021-12-21 21:56:39,719 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:39,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:39,720 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) [2021-12-21 21:56:39,722 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 [2021-12-21 21:56:39,723 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 21:56:39,723 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:56:39,754 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-21 21:56:39,757 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 [2021-12-21 21:56:39,757 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 21:56:39,758 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 21:56:39,758 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 21:56:39,758 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 21:56:39,758 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 21:56:39,758 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:39,758 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 21:56:39,758 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 21:56:39,758 INFO L133 ssoRankerPreferences]: Filename of dumped script: aviad.c_Iteration1_Loop [2021-12-21 21:56:39,758 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 21:56:39,758 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 21:56:39,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:39,768 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:39,771 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:39,871 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 21:56:39,874 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-21 21:56:39,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:39,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:39,876 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) [2021-12-21 21:56:39,878 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 [2021-12-21 21:56:39,879 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 [2021-12-21 21:56:39,885 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:56:39,886 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:56:39,886 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:56:39,886 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:56:39,886 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:56:39,888 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:56:39,888 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:56:39,903 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 21:56:39,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:39,920 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:39,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:39,921 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) [2021-12-21 21:56:39,922 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 [2021-12-21 21:56:39,923 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 [2021-12-21 21:56:39,929 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:56:39,929 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:56:39,929 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:56:39,929 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:56:39,929 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:56:39,930 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:56:39,930 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:56:39,945 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 21:56:39,962 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 [2021-12-21 21:56:39,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:39,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:39,964 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) [2021-12-21 21:56:39,966 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 [2021-12-21 21:56:39,967 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 [2021-12-21 21:56:39,973 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:56:39,973 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:56:39,973 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:56:39,973 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:56:39,973 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:56:39,975 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:56:39,975 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:56:39,977 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-21 21:56:39,982 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-21 21:56:39,982 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-21 21:56:39,983 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:39,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:39,984 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) [2021-12-21 21:56:39,985 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 [2021-12-21 21:56:40,016 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-21 21:56:40,016 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-21 21:56:40,016 INFO L513 LassoAnalysis]: Proved termination. [2021-12-21 21:56:40,016 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_f_~a#1) = 1*ULTIMATE.start_f_~a#1 Supporting invariants [] [2021-12-21 21:56:40,032 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 [2021-12-21 21:56:40,034 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-21 21:56:40,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:56:40,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 21:56:40,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:56:40,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:56:40,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 21:56:40,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:56:40,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-12-21 21:56:40,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 21:56:40,174 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-21 21:56:40,176 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2021-12-21 21:56:40,200 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). 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 25 states and 29 transitions. Complement of second has 7 states. [2021-12-21 21:56:40,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-21 21:56:40,204 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) [2021-12-21 21:56:40,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2021-12-21 21:56:40,206 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 2 letters. Loop has 3 letters. [2021-12-21 21:56:40,206 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:56:40,206 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 5 letters. Loop has 3 letters. [2021-12-21 21:56:40,206 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:56:40,207 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 2 letters. Loop has 6 letters. [2021-12-21 21:56:40,207 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:56:40,207 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 29 transitions. [2021-12-21 21:56:40,209 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-21 21:56:40,210 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 0 states and 0 transitions. [2021-12-21 21:56:40,211 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-21 21:56:40,211 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-21 21:56:40,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-21 21:56:40,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 21:56:40,211 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 21:56:40,211 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 21:56:40,211 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 21:56:40,211 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-21 21:56:40,212 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-21 21:56:40,212 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-21 21:56:40,212 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-21 21:56:40,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.12 09:56:40 BoogieIcfgContainer [2021-12-21 21:56:40,216 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-21 21:56:40,217 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 21:56:40,217 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 21:56:40,217 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 21:56:40,217 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:56:39" (3/4) ... [2021-12-21 21:56:40,219 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-21 21:56:40,219 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 21:56:40,219 INFO L158 Benchmark]: Toolchain (without parser) took 1587.01ms. Allocated memory is still 107.0MB. Free memory was 66.2MB in the beginning and 75.4MB in the end (delta: -9.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 21:56:40,220 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 107.0MB. Free memory was 82.3MB in the beginning and 82.2MB in the end (delta: 135.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 21:56:40,220 INFO L158 Benchmark]: CACSL2BoogieTranslator took 142.80ms. Allocated memory is still 107.0MB. Free memory was 66.0MB in the beginning and 85.8MB in the end (delta: -19.8MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. [2021-12-21 21:56:40,220 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.09ms. Allocated memory is still 107.0MB. Free memory was 85.6MB in the beginning and 84.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 21:56:40,221 INFO L158 Benchmark]: Boogie Preprocessor took 15.18ms. Allocated memory is still 107.0MB. Free memory was 84.3MB in the beginning and 83.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 21:56:40,221 INFO L158 Benchmark]: RCFGBuilder took 200.63ms. Allocated memory is still 107.0MB. Free memory was 83.2MB in the beginning and 82.8MB in the end (delta: 378.7kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 21:56:40,221 INFO L158 Benchmark]: BuchiAutomizer took 1192.11ms. Allocated memory is still 107.0MB. Free memory was 82.8MB in the beginning and 76.0MB in the end (delta: 6.9MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2021-12-21 21:56:40,221 INFO L158 Benchmark]: Witness Printer took 2.35ms. Allocated memory is still 107.0MB. Free memory was 76.0MB in the beginning and 75.4MB in the end (delta: 558.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 21:56:40,223 INFO L339 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 107.0MB. Free memory was 82.3MB in the beginning and 82.2MB in the end (delta: 135.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 142.80ms. Allocated memory is still 107.0MB. Free memory was 66.0MB in the beginning and 85.8MB in the end (delta: -19.8MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.09ms. Allocated memory is still 107.0MB. Free memory was 85.6MB in the beginning and 84.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.18ms. Allocated memory is still 107.0MB. Free memory was 84.3MB in the beginning and 83.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 200.63ms. Allocated memory is still 107.0MB. Free memory was 83.2MB in the beginning and 82.8MB in the end (delta: 378.7kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1192.11ms. Allocated memory is still 107.0MB. Free memory was 82.8MB in the beginning and 76.0MB in the end (delta: 6.9MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * Witness Printer took 2.35ms. Allocated memory is still 107.0MB. Free memory was 76.0MB in the beginning and 75.4MB in the end (delta: 558.0kB). 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 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function a and consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.1s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7 IncrementalHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 7 mSDtfsCounter, 7 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital24 mio100 ax100 hnf100 lsp79 ukn100 mio100 lsp100 div294 bol100 ite100 ukn100 eq153 hnf95 smp47 dnf100 smp100 tf105 neg97 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 28ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-21 21:56:40,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE