./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 f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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.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 475cf88887990488194ca7f61a6d05f74a450e7b ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 20:30:37,856 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:30:37,859 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:30:37,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:30:37,879 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:30:37,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:30:37,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:30:37,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:30:37,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:30:37,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:30:37,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:30:37,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:30:37,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:30:37,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:30:37,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:30:37,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:30:37,918 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:30:37,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:30:37,922 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:30:37,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:30:37,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:30:37,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:30:37,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:30:37,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:30:37,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:30:37,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:30:37,944 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:30:37,946 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:30:37,946 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:30:37,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:30:37,948 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:30:37,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:30:37,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:30:37,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:30:37,953 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:30:37,953 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:30:37,954 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:30:37,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:30:37,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:30:37,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:30:37,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:30:37,959 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-28 20:30:37,983 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:30:37,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:30:37,988 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:30:37,988 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:30:37,989 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:30:37,989 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 20:30:37,989 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 20:30:37,989 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 20:30:37,990 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 20:30:37,990 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 20:30:37,990 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 20:30:37,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:30:37,990 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:30:37,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:30:37,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:30:37,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 20:30:37,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 20:30:37,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 20:30:37,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 20:30:37,992 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 20:30:37,992 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:30:37,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 20:30:37,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:30:37,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:30:37,993 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 20:30:37,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:30:37,993 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:30:37,994 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:30:37,994 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 20:30:37,995 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 20:30:37,995 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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 -> 475cf88887990488194ca7f61a6d05f74a450e7b [2019-11-28 20:30:38,318 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:30:38,335 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:30:38,339 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:30:38,341 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:30:38,343 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:30:38,344 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/AlternKonv.c [2019-11-28 20:30:38,417 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce8ff6dc7/474cdee3889f4042b6e5259f7e379a89/FLAGbb808d3b7 [2019-11-28 20:30:38,866 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:30:38,866 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/AlternKonv.c [2019-11-28 20:30:38,871 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce8ff6dc7/474cdee3889f4042b6e5259f7e379a89/FLAGbb808d3b7 [2019-11-28 20:30:39,225 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce8ff6dc7/474cdee3889f4042b6e5259f7e379a89 [2019-11-28 20:30:39,228 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:30:39,230 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 20:30:39,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:30:39,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:30:39,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:30:39,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:30:39" (1/1) ... [2019-11-28 20:30:39,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5421ec35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:39, skipping insertion in model container [2019-11-28 20:30:39,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:30:39" (1/1) ... [2019-11-28 20:30:39,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:30:39,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:30:39,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:30:39,469 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:30:39,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:30:39,500 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:30:39,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:39 WrapperNode [2019-11-28 20:30:39,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:30:39,502 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 20:30:39,502 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 20:30:39,502 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 20:30:39,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:39" (1/1) ... [2019-11-28 20:30:39,518 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:39" (1/1) ... [2019-11-28 20:30:39,538 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 20:30:39,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:30:39,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:30:39,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:30:39,607 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:39" (1/1) ... [2019-11-28 20:30:39,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:39" (1/1) ... [2019-11-28 20:30:39,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:39" (1/1) ... [2019-11-28 20:30:39,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:39" (1/1) ... [2019-11-28 20:30:39,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:39" (1/1) ... [2019-11-28 20:30:39,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:39" (1/1) ... [2019-11-28 20:30:39,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:39" (1/1) ... [2019-11-28 20:30:39,620 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:30:39,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:30:39,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:30:39,621 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:30:39,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:39,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:30:39,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:30:39,842 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:30:39,842 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-28 20:30:39,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:30:39 BoogieIcfgContainer [2019-11-28 20:30:39,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:30:39,844 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 20:30:39,844 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 20:30:39,847 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 20:30:39,848 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:30:39,848 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 08:30:39" (1/3) ... [2019-11-28 20:30:39,849 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@495e90c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:30:39, skipping insertion in model container [2019-11-28 20:30:39,849 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:30:39,849 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:39" (2/3) ... [2019-11-28 20:30:39,850 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@495e90c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:30:39, skipping insertion in model container [2019-11-28 20:30:39,850 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:30:39,850 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:30:39" (3/3) ... [2019-11-28 20:30:39,852 INFO L371 chiAutomizerObserver]: Analyzing ICFG AlternKonv.c [2019-11-28 20:30:39,904 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 20:30:39,905 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 20:30:39,905 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 20:30:39,905 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:30:39,905 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:30:39,905 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 20:30:39,905 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:30:39,906 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 20:30:39,927 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-11-28 20:30:39,975 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-28 20:30:39,976 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:30:39,976 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:30:39,997 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 20:30:39,997 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 20:30:39,997 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 20:30:39,998 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-11-28 20:30:39,999 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-28 20:30:39,999 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:30:39,999 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:30:40,000 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 20:30:40,000 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 20:30:40,009 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 5#L18-2true [2019-11-28 20:30:40,010 INFO L796 eck$LassoCheckResult]: Loop: 5#L18-2true assume !!(0 != main_~i~0); 3#L10true assume main_~i~0 < 0;main_~i~0 := 2 + main_~i~0; 6#L12true assume !(main_~i~0 < 0); 5#L18-2true [2019-11-28 20:30:40,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:40,018 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-28 20:30:40,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:40,029 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947907172] [2019-11-28 20:30:40,029 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:40,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:40,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:40,115 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:30:40,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:40,116 INFO L82 PathProgramCache]: Analyzing trace with hash 39827, now seen corresponding path program 1 times [2019-11-28 20:30:40,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:40,117 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536422733] [2019-11-28 20:30:40,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:40,133 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:30:40,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:40,135 INFO L82 PathProgramCache]: Analyzing trace with hash 963348, now seen corresponding path program 1 times [2019-11-28 20:30:40,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:40,136 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661843687] [2019-11-28 20:30:40,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:40,148 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:30:40,226 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:30:40,226 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:30:40,227 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:30:40,227 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:30:40,227 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:30:40,227 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:40,227 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:30:40,227 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:30:40,228 INFO L133 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration1_Loop [2019-11-28 20:30:40,228 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:30:40,228 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:30:40,247 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:40,259 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:40,270 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:40,372 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:30:40,374 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:40,382 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:30:40,382 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:30:40,393 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:30:40,393 INFO L440 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: [] [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:40,402 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:30:40,402 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:30:40,407 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:30:40,407 INFO L440 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: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:40,413 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:30:40,413 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:40,424 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:30:40,424 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:30:40,434 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:30:40,445 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:30:40,446 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:30:40,446 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:30:40,446 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:30:40,446 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:30:40,447 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:40,447 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:30:40,447 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:30:40,447 INFO L133 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration1_Loop [2019-11-28 20:30:40,447 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:30:40,448 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:30:40,450 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:40,454 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:40,461 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:40,551 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:30:40,556 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:40,564 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:40,566 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:30:40,567 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:30:40,567 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:30:40,567 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:30:40,573 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:30:40,573 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 20:30:40,582 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Exception during sending of exit command (exit): Broken pipe No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:40,589 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:30:40,591 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:30:40,592 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:30:40,592 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:30:40,592 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:30:40,596 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:30:40,596 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:40,602 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:40,610 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:30:40,612 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:30:40,612 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:30:40,613 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:30:40,613 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:30:40,613 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:30:40,615 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:30:40,615 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 20:30:40,619 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:30:40,623 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-28 20:30:40,623 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:40,630 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:30:40,631 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:30:40,631 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:30:40,632 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-28 20:30:40,638 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:40,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:40,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:30:40,698 WARN L262 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:30:40,699 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:30:40,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:30:40,719 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:30:40,721 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:30:40,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:30:40,795 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 20:30:40,797 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 4 states. [2019-11-28 20:30:40,884 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states.. Second operand 4 states. Result 32 states and 45 transitions. Complement of second has 6 states. [2019-11-28 20:30:40,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:30:40,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 20:30:40,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2019-11-28 20:30:40,890 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 3 letters. [2019-11-28 20:30:40,893 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:30:40,893 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-28 20:30:40,894 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:30:40,894 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 6 letters. [2019-11-28 20:30:40,895 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:30:40,896 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 45 transitions. [2019-11-28 20:30:40,904 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-28 20:30:40,909 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 14 states and 20 transitions. [2019-11-28 20:30:40,910 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-28 20:30:40,911 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-11-28 20:30:40,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2019-11-28 20:30:40,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:30:40,913 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-11-28 20:30:40,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2019-11-28 20:30:40,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2019-11-28 20:30:40,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-28 20:30:40,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2019-11-28 20:30:40,952 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2019-11-28 20:30:40,952 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2019-11-28 20:30:40,952 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 20:30:40,954 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2019-11-28 20:30:40,954 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-28 20:30:40,955 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:30:40,955 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:30:40,955 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 20:30:40,955 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 20:30:40,956 INFO L794 eck$LassoCheckResult]: Stem: 85#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 86#L18-2 assume !!(0 != main_~i~0); 79#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 80#L18 [2019-11-28 20:30:40,956 INFO L796 eck$LassoCheckResult]: Loop: 80#L18 assume main_~i~0 > 0;main_~i~0 := -1 * main_~i~0; 89#L18-2 assume !!(0 != main_~i~0); 90#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 80#L18 [2019-11-28 20:30:40,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:40,956 INFO L82 PathProgramCache]: Analyzing trace with hash 31088, now seen corresponding path program 1 times [2019-11-28 20:30:40,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:40,957 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455834571] [2019-11-28 20:30:40,957 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:40,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:40,966 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:30:40,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:40,967 INFO L82 PathProgramCache]: Analyzing trace with hash 57996, now seen corresponding path program 1 times [2019-11-28 20:30:40,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:40,968 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682017342] [2019-11-28 20:30:40,968 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:40,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:30:41,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:30:41,008 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682017342] [2019-11-28 20:30:41,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:30:41,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-28 20:30:41,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920192058] [2019-11-28 20:30:41,014 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-28 20:30:41,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:30:41,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:30:41,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:30:41,019 INFO L87 Difference]: Start difference. First operand 12 states and 18 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-11-28 20:30:41,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:30:41,048 INFO L93 Difference]: Finished difference Result 14 states and 20 transitions. [2019-11-28 20:30:41,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:30:41,050 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 20 transitions. [2019-11-28 20:30:41,051 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-28 20:30:41,051 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 20 transitions. [2019-11-28 20:30:41,052 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-28 20:30:41,052 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-11-28 20:30:41,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2019-11-28 20:30:41,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:30:41,052 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-11-28 20:30:41,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2019-11-28 20:30:41,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-28 20:30:41,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-28 20:30:41,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 20 transitions. [2019-11-28 20:30:41,055 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-11-28 20:30:41,055 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-11-28 20:30:41,055 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-28 20:30:41,056 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 20 transitions. [2019-11-28 20:30:41,056 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-28 20:30:41,057 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:30:41,057 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:30:41,057 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 20:30:41,057 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 20:30:41,058 INFO L794 eck$LassoCheckResult]: Stem: 115#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 116#L18-2 assume !!(0 != main_~i~0); 111#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 112#L18 [2019-11-28 20:30:41,058 INFO L796 eck$LassoCheckResult]: Loop: 112#L18 assume !(main_~i~0 > 0); 122#L18-2 assume !!(0 != main_~i~0); 124#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 112#L18 [2019-11-28 20:30:41,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:41,058 INFO L82 PathProgramCache]: Analyzing trace with hash 31088, now seen corresponding path program 2 times [2019-11-28 20:30:41,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:41,059 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267295825] [2019-11-28 20:30:41,059 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:41,067 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:30:41,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:41,068 INFO L82 PathProgramCache]: Analyzing trace with hash 59918, now seen corresponding path program 1 times [2019-11-28 20:30:41,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:41,069 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637162676] [2019-11-28 20:30:41,069 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:30:41,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:30:41,110 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637162676] [2019-11-28 20:30:41,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:30:41,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 20:30:41,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806246035] [2019-11-28 20:30:41,113 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-28 20:30:41,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:30:41,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:30:41,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:30:41,114 INFO L87 Difference]: Start difference. First operand 14 states and 20 transitions. cyclomatic complexity: 8 Second operand 4 states. [2019-11-28 20:30:41,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:30:41,143 INFO L93 Difference]: Finished difference Result 16 states and 22 transitions. [2019-11-28 20:30:41,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:30:41,143 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 22 transitions. [2019-11-28 20:30:41,144 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-11-28 20:30:41,145 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 16 states and 22 transitions. [2019-11-28 20:30:41,145 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2019-11-28 20:30:41,145 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2019-11-28 20:30:41,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 22 transitions. [2019-11-28 20:30:41,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:30:41,146 INFO L688 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2019-11-28 20:30:41,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 22 transitions. [2019-11-28 20:30:41,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2019-11-28 20:30:41,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-28 20:30:41,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 20 transitions. [2019-11-28 20:30:41,148 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-11-28 20:30:41,149 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-11-28 20:30:41,149 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-28 20:30:41,149 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 20 transitions. [2019-11-28 20:30:41,150 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-28 20:30:41,150 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:30:41,150 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:30:41,150 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 20:30:41,150 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1] [2019-11-28 20:30:41,151 INFO L794 eck$LassoCheckResult]: Stem: 152#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 153#L18-2 assume !!(0 != main_~i~0); 148#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 149#L18 [2019-11-28 20:30:41,151 INFO L796 eck$LassoCheckResult]: Loop: 149#L18 assume main_~i~0 > 0;main_~i~0 := -1 * main_~i~0; 154#L18-2 assume !!(0 != main_~i~0); 155#L10 assume main_~i~0 < 0;main_~i~0 := 2 + main_~i~0; 157#L12 assume !(main_~i~0 < 0); 159#L18-2 assume !!(0 != main_~i~0); 161#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 149#L18 [2019-11-28 20:30:41,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:41,151 INFO L82 PathProgramCache]: Analyzing trace with hash 31088, now seen corresponding path program 3 times [2019-11-28 20:30:41,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:41,152 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798991883] [2019-11-28 20:30:41,152 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:41,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:41,160 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:30:41,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:41,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1727393992, now seen corresponding path program 1 times [2019-11-28 20:30:41,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:41,162 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438165430] [2019-11-28 20:30:41,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:41,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:41,174 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:30:41,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:41,176 INFO L82 PathProgramCache]: Analyzing trace with hash 684415735, now seen corresponding path program 1 times [2019-11-28 20:30:41,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:41,177 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998453980] [2019-11-28 20:30:41,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:41,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:41,204 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:30:41,251 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:30:41,251 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:30:41,251 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:30:41,251 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:30:41,251 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:30:41,251 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:41,251 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:30:41,252 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:30:41,252 INFO L133 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration4_Loop [2019-11-28 20:30:41,252 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:30:41,252 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:30:41,254 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:41,264 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:41,268 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:41,354 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:30:41,354 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:41,368 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:30:41,368 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:41,373 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:30:41,374 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:41,391 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:30:41,391 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:30:41,396 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:30:41,396 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:41,412 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:30:41,412 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:41,436 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:30:41,436 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:41,443 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:30:41,446 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:30:41,446 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:30:41,446 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:30:41,446 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:30:41,447 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:30:41,447 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:41,447 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:30:41,447 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:30:41,447 INFO L133 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration4_Loop [2019-11-28 20:30:41,448 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:30:41,448 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:30:41,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:41,460 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:41,471 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:41,548 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:30:41,548 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:41,554 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:30:41,556 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:30:41,557 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:30:41,557 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:30:41,557 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:30:41,560 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:30:41,560 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 20:30:41,565 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:41,580 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:30:41,582 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:30:41,582 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:30:41,582 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:30:41,582 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:30:41,583 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:30:41,584 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:30:41,584 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:41,587 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:30:41,590 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-28 20:30:41,590 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:41,603 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:30:41,604 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:30:41,604 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:30:41,604 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-28 20:30:41,606 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:41,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:41,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:30:41,637 INFO L264 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:30:41,638 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:30:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:30:41,645 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 20:30:41,646 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:30:41,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:30:41,669 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 [2019-11-28 20:30:41,669 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8 Second operand 4 states. [2019-11-28 20:30:41,692 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 25 states and 35 transitions. Complement of second has 5 states. [2019-11-28 20:30:41,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:30:41,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 20:30:41,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2019-11-28 20:30:41,694 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 3 letters. Loop has 6 letters. [2019-11-28 20:30:41,694 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:30:41,694 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 20:30:41,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:41,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:30:41,718 INFO L264 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:30:41,719 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:30:41,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:30:41,725 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 20:30:41,726 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:30:41,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:30:41,754 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-28 20:30:41,755 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8 Second operand 4 states. [2019-11-28 20:30:41,804 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 43 states and 63 transitions. Complement of second has 9 states. [2019-11-28 20:30:41,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-11-28 20:30:41,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 20:30:41,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2019-11-28 20:30:41,805 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 3 letters. Loop has 6 letters. [2019-11-28 20:30:41,806 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:30:41,806 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 9 letters. Loop has 6 letters. [2019-11-28 20:30:41,806 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:30:41,806 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 3 letters. Loop has 12 letters. [2019-11-28 20:30:41,807 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:30:41,807 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 63 transitions. [2019-11-28 20:30:41,809 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 20 [2019-11-28 20:30:41,811 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 41 states and 60 transitions. [2019-11-28 20:30:41,811 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2019-11-28 20:30:41,812 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2019-11-28 20:30:41,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 60 transitions. [2019-11-28 20:30:41,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:30:41,812 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 60 transitions. [2019-11-28 20:30:41,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 60 transitions. [2019-11-28 20:30:41,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2019-11-28 20:30:41,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-28 20:30:41,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 55 transitions. [2019-11-28 20:30:41,817 INFO L711 BuchiCegarLoop]: Abstraction has 36 states and 55 transitions. [2019-11-28 20:30:41,818 INFO L591 BuchiCegarLoop]: Abstraction has 36 states and 55 transitions. [2019-11-28 20:30:41,818 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-28 20:30:41,818 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 55 transitions. [2019-11-28 20:30:41,819 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 18 [2019-11-28 20:30:41,819 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:30:41,820 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:30:41,820 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-28 20:30:41,820 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-28 20:30:41,821 INFO L794 eck$LassoCheckResult]: Stem: 323#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 324#L18-2 assume !!(0 != main_~i~0); 321#L10 assume main_~i~0 < 0;main_~i~0 := 2 + main_~i~0; 322#L12 assume main_~i~0 < 0; 328#L13 [2019-11-28 20:30:41,821 INFO L796 eck$LassoCheckResult]: Loop: 328#L13 assume !(main_~i~0 <= -2147483648);main_~i~0 := -1 * main_~i~0; 334#L18-2 assume !!(0 != main_~i~0); 354#L10 assume main_~i~0 < 0;main_~i~0 := 2 + main_~i~0; 352#L12 assume main_~i~0 < 0; 328#L13 [2019-11-28 20:30:41,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:41,821 INFO L82 PathProgramCache]: Analyzing trace with hash 963341, now seen corresponding path program 1 times [2019-11-28 20:30:41,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:41,822 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854079079] [2019-11-28 20:30:41,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:41,831 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:30:41,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:41,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1559161, now seen corresponding path program 1 times [2019-11-28 20:30:41,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:41,832 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743626348] [2019-11-28 20:30:41,832 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:41,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:41,841 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:30:41,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:41,841 INFO L82 PathProgramCache]: Analyzing trace with hash 608049029, now seen corresponding path program 1 times [2019-11-28 20:30:41,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:41,842 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202114734] [2019-11-28 20:30:41,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:30:41,873 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:30:41,874 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202114734] [2019-11-28 20:30:41,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:30:41,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 20:30:41,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126586696] [2019-11-28 20:30:41,917 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:30:41,917 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:30:41,917 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:30:41,917 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:30:41,917 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:30:41,918 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:41,918 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:30:41,918 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:30:41,918 INFO L133 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration5_Loop [2019-11-28 20:30:41,918 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:30:41,918 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:30:41,920 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:41,937 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:41,941 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:41,991 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:30:41,993 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:42,010 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:30:42,011 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:30:42,016 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:30:42,017 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:42,034 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:30:42,034 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:42,039 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:30:42,039 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:42,057 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:30:42,057 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:42,094 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:30:42,094 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:42,181 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:30:42,183 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:30:42,184 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:30:42,184 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:30:42,184 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:30:42,184 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:30:42,184 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:42,184 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:30:42,184 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:30:42,184 INFO L133 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration5_Loop [2019-11-28 20:30:42,185 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:30:42,185 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:30:42,186 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:42,193 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:42,196 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:42,237 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:30:42,237 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:42,266 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:30:42,267 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:30:42,268 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:30:42,268 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:30:42,268 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:30:42,271 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:30:42,271 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:42,278 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:42,292 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:42,294 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:30:42,294 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:30:42,294 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:30:42,295 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:30:42,301 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:30:42,301 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 20:30:42,311 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:42,329 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:30:42,331 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:30:42,332 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:30:42,332 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:30:42,332 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:30:42,333 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:30:42,336 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:30:42,336 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:42,341 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:30:42,343 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-28 20:30:42,343 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:42,350 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:30:42,350 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:30:42,351 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:30:42,351 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-28 20:30:42,354 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:42,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:42,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:30:42,379 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:30:42,379 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:30:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:30:42,388 WARN L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 20:30:42,389 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:30:42,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:30:42,418 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 [2019-11-28 20:30:42,418 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 55 transitions. cyclomatic complexity: 24 Second operand 4 states. [2019-11-28 20:30:42,544 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 55 transitions. cyclomatic complexity: 24. Second operand 4 states. Result 147 states and 212 transitions. Complement of second has 11 states. [2019-11-28 20:30:42,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2019-11-28 20:30:42,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 20:30:42,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 26 transitions. [2019-11-28 20:30:42,547 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 26 transitions. Stem has 4 letters. Loop has 4 letters. [2019-11-28 20:30:42,547 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:30:42,548 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 26 transitions. Stem has 8 letters. Loop has 4 letters. [2019-11-28 20:30:42,548 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:30:42,548 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 26 transitions. Stem has 4 letters. Loop has 8 letters. [2019-11-28 20:30:42,548 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:30:42,548 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 147 states and 212 transitions. [2019-11-28 20:30:42,554 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 23 [2019-11-28 20:30:42,559 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 147 states to 121 states and 178 transitions. [2019-11-28 20:30:42,559 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2019-11-28 20:30:42,560 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2019-11-28 20:30:42,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 121 states and 178 transitions. [2019-11-28 20:30:42,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:30:42,560 INFO L688 BuchiCegarLoop]: Abstraction has 121 states and 178 transitions. [2019-11-28 20:30:42,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states and 178 transitions. [2019-11-28 20:30:42,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 101. [2019-11-28 20:30:42,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2019-11-28 20:30:42,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 153 transitions. [2019-11-28 20:30:42,575 INFO L711 BuchiCegarLoop]: Abstraction has 101 states and 153 transitions. [2019-11-28 20:30:42,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:30:42,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:30:42,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:30:42,576 INFO L87 Difference]: Start difference. First operand 101 states and 153 transitions. Second operand 4 states. [2019-11-28 20:30:42,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:30:42,616 INFO L93 Difference]: Finished difference Result 80 states and 105 transitions. [2019-11-28 20:30:42,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:30:42,618 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 80 states and 105 transitions. [2019-11-28 20:30:42,620 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 31 [2019-11-28 20:30:42,621 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 80 states to 72 states and 97 transitions. [2019-11-28 20:30:42,621 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 48 [2019-11-28 20:30:42,621 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 48 [2019-11-28 20:30:42,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 97 transitions. [2019-11-28 20:30:42,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:30:42,621 INFO L688 BuchiCegarLoop]: Abstraction has 72 states and 97 transitions. [2019-11-28 20:30:42,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states and 97 transitions. [2019-11-28 20:30:42,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 35. [2019-11-28 20:30:42,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-28 20:30:42,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2019-11-28 20:30:42,625 INFO L711 BuchiCegarLoop]: Abstraction has 35 states and 50 transitions. [2019-11-28 20:30:42,625 INFO L591 BuchiCegarLoop]: Abstraction has 35 states and 50 transitions. [2019-11-28 20:30:42,625 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-28 20:30:42,625 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 50 transitions. [2019-11-28 20:30:42,626 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2019-11-28 20:30:42,626 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:30:42,626 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:30:42,627 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-28 20:30:42,627 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 20:30:42,627 INFO L794 eck$LassoCheckResult]: Stem: 746#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 747#L18-2 assume !!(0 != main_~i~0); 766#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 768#L18 assume main_~i~0 > 0;main_~i~0 := -1 * main_~i~0; 753#L18-2 [2019-11-28 20:30:42,627 INFO L796 eck$LassoCheckResult]: Loop: 753#L18-2 assume !!(0 != main_~i~0); 773#L10 assume main_~i~0 < 0;main_~i~0 := 2 + main_~i~0; 751#L12 assume !(main_~i~0 < 0); 753#L18-2 [2019-11-28 20:30:42,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:42,627 INFO L82 PathProgramCache]: Analyzing trace with hash 963757, now seen corresponding path program 1 times [2019-11-28 20:30:42,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:42,628 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062018928] [2019-11-28 20:30:42,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:42,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:42,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:42,644 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:30:42,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:42,645 INFO L82 PathProgramCache]: Analyzing trace with hash 39827, now seen corresponding path program 2 times [2019-11-28 20:30:42,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:42,645 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288000227] [2019-11-28 20:30:42,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:42,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:42,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:42,652 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:30:42,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:42,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1353476249, now seen corresponding path program 2 times [2019-11-28 20:30:42,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:42,653 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384883103] [2019-11-28 20:30:42,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:42,662 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:30:42,688 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:30:42,688 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:30:42,688 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:30:42,688 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:30:42,688 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:30:42,688 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:42,689 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:30:42,689 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:30:42,689 INFO L133 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration6_Loop [2019-11-28 20:30:42,689 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:30:42,689 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:30:42,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:42,698 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:42,701 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:42,739 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:30:42,739 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:42,750 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:30:42,750 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:42,758 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:30:42,759 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:30:42,773 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:30:42,776 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:30:42,776 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:30:42,776 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:30:42,776 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:30:42,776 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:30:42,776 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:42,776 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:30:42,776 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:30:42,777 INFO L133 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration6_Loop [2019-11-28 20:30:42,777 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:30:42,777 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:30:42,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:42,787 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:42,789 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:42,826 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:30:42,826 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:42,838 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:30:42,840 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:30:42,841 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:30:42,841 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:30:42,841 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:30:42,841 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:30:42,843 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:30:42,843 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:42,847 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:30:42,851 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-28 20:30:42,851 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:42,857 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:30:42,857 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:30:42,858 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:30:42,858 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-28 20:30:42,860 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:42,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:30:42,883 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:30:42,883 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:30:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:30:42,889 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:30:42,889 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:30:42,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:30:42,901 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 20:30:42,901 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19 Second operand 4 states. [2019-11-28 20:30:42,931 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19. Second operand 4 states. Result 73 states and 96 transitions. Complement of second has 5 states. [2019-11-28 20:30:42,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:30:42,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 20:30:42,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2019-11-28 20:30:42,932 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-28 20:30:42,932 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:30:42,933 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 7 letters. Loop has 3 letters. [2019-11-28 20:30:42,933 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:30:42,933 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2019-11-28 20:30:42,933 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:30:42,934 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 73 states and 96 transitions. [2019-11-28 20:30:42,935 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 25 [2019-11-28 20:30:42,936 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 73 states to 65 states and 88 transitions. [2019-11-28 20:30:42,937 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2019-11-28 20:30:42,937 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2019-11-28 20:30:42,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 88 transitions. [2019-11-28 20:30:42,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:30:42,938 INFO L688 BuchiCegarLoop]: Abstraction has 65 states and 88 transitions. [2019-11-28 20:30:42,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states and 88 transitions. [2019-11-28 20:30:42,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 57. [2019-11-28 20:30:42,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-11-28 20:30:42,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 80 transitions. [2019-11-28 20:30:42,943 INFO L711 BuchiCegarLoop]: Abstraction has 57 states and 80 transitions. [2019-11-28 20:30:42,943 INFO L591 BuchiCegarLoop]: Abstraction has 57 states and 80 transitions. [2019-11-28 20:30:42,943 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-28 20:30:42,943 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 57 states and 80 transitions. [2019-11-28 20:30:42,944 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 25 [2019-11-28 20:30:42,944 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:30:42,944 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:30:42,945 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-28 20:30:42,945 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1] [2019-11-28 20:30:42,945 INFO L794 eck$LassoCheckResult]: Stem: 896#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 897#L18-2 assume !!(0 != main_~i~0); 927#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 925#L18 assume !(main_~i~0 > 0); 908#L18-2 [2019-11-28 20:30:42,946 INFO L796 eck$LassoCheckResult]: Loop: 908#L18-2 assume !!(0 != main_~i~0); 948#L10 assume main_~i~0 < 0;main_~i~0 := 2 + main_~i~0; 936#L12 assume !(main_~i~0 < 0); 947#L18-2 assume !!(0 != main_~i~0); 935#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 893#L18 assume !(main_~i~0 > 0); 908#L18-2 [2019-11-28 20:30:42,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:42,946 INFO L82 PathProgramCache]: Analyzing trace with hash 963759, now seen corresponding path program 1 times [2019-11-28 20:30:42,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:42,947 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358136804] [2019-11-28 20:30:42,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:42,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:42,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:42,953 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:30:42,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:42,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1186496604, now seen corresponding path program 1 times [2019-11-28 20:30:42,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:42,955 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078204403] [2019-11-28 20:30:42,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:42,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:42,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:42,962 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:30:42,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:42,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1517058698, now seen corresponding path program 1 times [2019-11-28 20:30:42,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:42,963 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518524947] [2019-11-28 20:30:42,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:42,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:42,973 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:30:43,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 08:30:43 BoogieIcfgContainer [2019-11-28 20:30:43,060 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 20:30:43,060 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:30:43,060 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:30:43,061 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:30:43,061 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:30:39" (3/4) ... [2019-11-28 20:30:43,065 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-11-28 20:30:43,110 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 20:30:43,110 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:30:43,113 INFO L168 Benchmark]: Toolchain (without parser) took 3882.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 209.7 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -143.6 MB). Peak memory consumption was 66.1 MB. Max. memory is 11.5 GB. [2019-11-28 20:30:43,114 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:30:43,115 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.97 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:30:43,115 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.62 ms. Allocated memory is still 1.0 GB. Free memory is still 951.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:30:43,116 INFO L168 Benchmark]: Boogie Preprocessor took 81.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -177.1 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-28 20:30:43,116 INFO L168 Benchmark]: RCFGBuilder took 222.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:30:43,117 INFO L168 Benchmark]: BuchiAutomizer took 3216.24 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 78.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 4.1 MB). Peak memory consumption was 82.2 MB. Max. memory is 11.5 GB. [2019-11-28 20:30:43,118 INFO L168 Benchmark]: Witness Printer took 50.48 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:30:43,121 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 270.97 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.62 ms. Allocated memory is still 1.0 GB. Free memory is still 951.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 81.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -177.1 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 222.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3216.24 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 78.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 4.1 MB). Peak memory consumption was 82.2 MB. Max. memory is 11.5 GB. * Witness Printer took 50.48 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (3 trivial, 4 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i and consists of 4 locations. One deterministic module has affine ranking function i and consists of 5 locations. One deterministic module has affine ranking function i and consists of 6 locations. One deterministic module has affine ranking function -1 * i and consists of 3 locations. 3 modules have a trivial ranking function, the largest among these consists of 4 locations. The remainder module has 57 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.1s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 2.0s. Construction of modules took 0.2s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 7. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 74 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 57 states and ocurred in iteration 6. Nontrivial modules had stage [3, 1, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 2/2 HoareTripleCheckerStatistics: 61 SDtfs, 69 SDslu, 3 SDs, 0 SdLazy, 142 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT3 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax190 hnf98 lsp52 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq152 hnf94 smp93 dnf100 smp100 tf111 neg98 sie112 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 24ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 9]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@ea53de=0, \result=0, i=-1} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: 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 [L10] COND FALSE !(i < 0) [L17] i = i-2 [L18] COND FALSE !(i > 0) Loop: [L9] COND TRUE i != 0 [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) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...