./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/Ex03.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8d31f386 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-restricted-15/Ex03.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 4c415167dfa4b02636468ff00722dddee0c99139 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 18:23:27,710 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 18:23:27,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 18:23:27,744 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 18:23:27,745 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 18:23:27,747 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 18:23:27,748 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 18:23:27,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 18:23:27,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 18:23:27,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 18:23:27,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 18:23:27,758 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 18:23:27,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 18:23:27,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 18:23:27,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 18:23:27,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 18:23:27,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 18:23:27,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 18:23:27,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 18:23:27,771 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 18:23:27,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 18:23:27,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 18:23:27,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 18:23:27,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 18:23:27,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 18:23:27,789 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 18:23:27,789 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 18:23:27,790 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 18:23:27,790 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 18:23:27,791 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 18:23:27,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 18:23:27,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 18:23:27,792 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 18:23:27,792 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 18:23:27,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 18:23:27,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 18:23:27,793 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 18:23:27,793 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 18:23:27,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 18:23:27,794 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 18:23:27,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 18:23:27,795 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-07-06 18:23:27,825 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 18:23:27,825 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 18:23:27,827 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 18:23:27,827 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 18:23:27,827 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 18:23:27,827 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 18:23:27,827 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 18:23:27,828 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 18:23:27,828 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 18:23:27,828 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 18:23:27,828 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 18:23:27,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 18:23:27,829 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 18:23:27,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 18:23:27,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 18:23:27,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 18:23:27,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 18:23:27,829 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 18:23:27,829 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 18:23:27,829 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 18:23:27,829 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 18:23:27,829 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 18:23:27,829 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 18:23:27,830 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 18:23:27,830 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 18:23:27,830 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 18:23:27,830 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 18:23:27,831 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 18:23:27,831 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c415167dfa4b02636468ff00722dddee0c99139 [2021-07-06 18:23:28,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 18:23:28,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 18:23:28,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 18:23:28,067 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 18:23:28,068 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 18:23:28,068 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/Ex03.c [2021-07-06 18:23:28,104 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbd0013c7/c138f402b768431ca64dc0bcfdcb5790/FLAG85078290e [2021-07-06 18:23:28,399 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 18:23:28,400 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/Ex03.c [2021-07-06 18:23:28,404 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbd0013c7/c138f402b768431ca64dc0bcfdcb5790/FLAG85078290e [2021-07-06 18:23:28,834 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbd0013c7/c138f402b768431ca64dc0bcfdcb5790 [2021-07-06 18:23:28,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 18:23:28,840 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 18:23:28,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 18:23:28,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 18:23:28,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 18:23:28,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 06:23:28" (1/1) ... [2021-07-06 18:23:28,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ade4f42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:28, skipping insertion in model container [2021-07-06 18:23:28,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 06:23:28" (1/1) ... [2021-07-06 18:23:28,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 18:23:28,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 18:23:28,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 18:23:28,940 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 18:23:28,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 18:23:28,953 INFO L208 MainTranslator]: Completed translation [2021-07-06 18:23:28,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:28 WrapperNode [2021-07-06 18:23:28,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 18:23:28,954 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 18:23:28,954 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 18:23:28,954 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 18:23:28,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:28" (1/1) ... [2021-07-06 18:23:28,961 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:28" (1/1) ... [2021-07-06 18:23:28,969 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 18:23:28,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 18:23:28,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 18:23:28,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 18:23:28,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:28" (1/1) ... [2021-07-06 18:23:28,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:28" (1/1) ... [2021-07-06 18:23:28,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:28" (1/1) ... [2021-07-06 18:23:28,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:28" (1/1) ... [2021-07-06 18:23:28,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:28" (1/1) ... [2021-07-06 18:23:28,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:28" (1/1) ... [2021-07-06 18:23:28,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:28" (1/1) ... [2021-07-06 18:23:28,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 18:23:28,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 18:23:28,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 18:23:28,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 18:23:29,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:28" (1/1) ... [2021-07-06 18:23:29,004 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:23:29,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:23:29,017 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 18:23:29,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-07-06 18:23:29,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 18:23:29,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 18:23:29,159 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 18:23:29,159 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-07-06 18:23:29,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 06:23:29 BoogieIcfgContainer [2021-07-06 18:23:29,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 18:23:29,160 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 18:23:29,160 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 18:23:29,162 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 18:23:29,162 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 18:23:29,163 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 06:23:28" (1/3) ... [2021-07-06 18:23:29,163 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7303875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 06:23:29, skipping insertion in model container [2021-07-06 18:23:29,163 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 18:23:29,164 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:28" (2/3) ... [2021-07-06 18:23:29,165 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7303875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 06:23:29, skipping insertion in model container [2021-07-06 18:23:29,165 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 18:23:29,165 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 06:23:29" (3/3) ... [2021-07-06 18:23:29,166 INFO L389 chiAutomizerObserver]: Analyzing ICFG Ex03.c [2021-07-06 18:23:29,200 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 18:23:29,200 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 18:23:29,200 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 18:23:29,200 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 18:23:29,200 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 18:23:29,200 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 18:23:29,200 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 18:23:29,200 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 18:23:29,208 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:23:29,217 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-07-06 18:23:29,217 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 18:23:29,217 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 18:23:29,220 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-07-06 18:23:29,220 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-07-06 18:23:29,220 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 18:23:29,220 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:23:29,221 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-07-06 18:23:29,221 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 18:23:29,221 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 18:23:29,221 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-07-06 18:23:29,221 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-07-06 18:23:29,225 INFO L791 eck$LassoCheckResult]: Stem: 5#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; 8#L10-2true [2021-07-06 18:23:29,225 INFO L793 eck$LassoCheckResult]: Loop: 8#L10-2true assume !!(main_~i~0 < 0); 4#L10true assume -5 != main_~i~0;main_~i~0 := 1 + main_~i~0; 8#L10-2true [2021-07-06 18:23:29,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:23:29,228 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-07-06 18:23:29,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:23:29,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234347203] [2021-07-06 18:23:29,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:23:29,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:23:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:29,277 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:29,283 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:29,292 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:23:29,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:23:29,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2021-07-06 18:23:29,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:23:29,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787524294] [2021-07-06 18:23:29,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:23:29,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:23:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:29,306 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:29,315 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:29,316 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:23:29,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:23:29,318 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2021-07-06 18:23:29,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:23:29,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511115457] [2021-07-06 18:23:29,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:23:29,319 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:23:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:29,331 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:29,336 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:29,337 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:23:29,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:29,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-06 18:23:29,425 INFO L210 LassoAnalysis]: Preferences: [2021-07-06 18:23:29,426 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-07-06 18:23:29,426 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-07-06 18:23:29,426 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-07-06 18:23:29,426 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-07-06 18:23:29,426 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:23:29,426 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-07-06 18:23:29,426 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-07-06 18:23:29,426 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex03.c_Iteration1_Loop [2021-07-06 18:23:29,426 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-07-06 18:23:29,427 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-07-06 18:23:29,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:23:29,444 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:23:29,449 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:23:29,584 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-07-06 18:23:29,585 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-07-06 18:23:29,586 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:23:29,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:23:29,597 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 18:23:29,603 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-07-06 18:23:29,604 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-07-06 18:23:29,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-07-06 18:23:29,631 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-07-06 18:23:29,632 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: [] [2021-07-06 18:23:29,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-07-06 18:23:29,650 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:23:29,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:23:29,651 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 18:23:29,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-07-06 18:23:29,654 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-07-06 18:23:29,654 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-07-06 18:23:29,685 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-07-06 18:23:29,685 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: [] [2021-07-06 18:23:29,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-07-06 18:23:29,704 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:23:29,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:23:29,709 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 18:23:29,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-07-06 18:23:29,711 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-07-06 18:23:29,711 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-07-06 18:23:29,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-07-06 18:23:29,751 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:23:29,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:23:29,752 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 18:23:29,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-07-06 18:23:29,759 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-07-06 18:23:29,759 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-07-06 18:23:29,797 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-07-06 18:23:29,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-07-06 18:23:29,803 INFO L210 LassoAnalysis]: Preferences: [2021-07-06 18:23:29,804 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-07-06 18:23:29,804 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-07-06 18:23:29,804 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-07-06 18:23:29,804 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-07-06 18:23:29,804 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:23:29,804 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-07-06 18:23:29,804 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-07-06 18:23:29,804 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex03.c_Iteration1_Loop [2021-07-06 18:23:29,804 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-07-06 18:23:29,804 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-07-06 18:23:29,805 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:23:29,812 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:23:29,818 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:23:29,945 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-07-06 18:23:29,948 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-07-06 18:23:29,949 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:23:29,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:23:29,949 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 18:23:29,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-07-06 18:23:29,952 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-07-06 18:23:29,958 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-07-06 18:23:29,959 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-07-06 18:23:29,959 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-07-06 18:23:29,959 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-07-06 18:23:29,963 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-07-06 18:23:29,963 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-07-06 18:23:29,977 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-07-06 18:23:29,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-07-06 18:23:29,992 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:23:29,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:23:29,993 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 18:23:29,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-07-06 18:23:30,003 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-07-06 18:23:30,009 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-07-06 18:23:30,010 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-07-06 18:23:30,010 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-07-06 18:23:30,010 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-07-06 18:23:30,012 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-07-06 18:23:30,012 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-07-06 18:23:30,022 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-07-06 18:23:30,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-07-06 18:23:30,039 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:23:30,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:23:30,040 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 18:23:30,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-07-06 18:23:30,049 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-07-06 18:23:30,056 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-07-06 18:23:30,056 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-07-06 18:23:30,056 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-07-06 18:23:30,056 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-07-06 18:23:30,056 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-07-06 18:23:30,058 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-07-06 18:23:30,058 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-07-06 18:23:30,075 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-07-06 18:23:30,078 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-07-06 18:23:30,078 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-07-06 18:23:30,079 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:23:30,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:23:30,080 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 18:23:30,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-07-06 18:23:30,081 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-07-06 18:23:30,082 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-07-06 18:23:30,082 INFO L513 LassoAnalysis]: Proved termination. [2021-07-06 18:23:30,082 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-07-06 18:23:30,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-07-06 18:23:30,101 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-07-06 18:23:30,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:23:30,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 18:23:30,127 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2021-07-06 18:23:30,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-06 18:23:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 18:23:30,133 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-07-06 18:23:30,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-06 18:23:30,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:30,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 18:23:30,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:30,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 18:23:30,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:30,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 18:23:30,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:30,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 18:23:30,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 18:23:30,167 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 [2021-07-06 18:23:30,167 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:23:30,209 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 20 states and 28 transitions. Complement of second has 7 states. [2021-07-06 18:23:30,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-07-06 18:23:30,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:23:30,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2021-07-06 18:23:30,223 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 1 letters. Loop has 2 letters. [2021-07-06 18:23:30,224 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-07-06 18:23:30,224 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 3 letters. Loop has 2 letters. [2021-07-06 18:23:30,224 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-07-06 18:23:30,224 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 1 letters. Loop has 4 letters. [2021-07-06 18:23:30,224 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-07-06 18:23:30,225 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 28 transitions. [2021-07-06 18:23:30,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-07-06 18:23:30,231 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-07-06 18:23:30,235 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 8 states and 11 transitions. [2021-07-06 18:23:30,235 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-07-06 18:23:30,235 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2021-07-06 18:23:30,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2021-07-06 18:23:30,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-07-06 18:23:30,236 INFO L681 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-07-06 18:23:30,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2021-07-06 18:23:30,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2021-07-06 18:23:30,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:23:30,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2021-07-06 18:23:30,251 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-07-06 18:23:30,251 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-07-06 18:23:30,251 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 18:23:30,251 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2021-07-06 18:23:30,252 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-07-06 18:23:30,252 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 18:23:30,252 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 18:23:30,252 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-07-06 18:23:30,252 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-07-06 18:23:30,252 INFO L791 eck$LassoCheckResult]: Stem: 68#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; 69#L10-2 assume !!(main_~i~0 < 0); 63#L10 [2021-07-06 18:23:30,252 INFO L793 eck$LassoCheckResult]: Loop: 63#L10 assume !(-5 != main_~i~0); 64#L10-2 assume !!(main_~i~0 < 0); 63#L10 [2021-07-06 18:23:30,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:23:30,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-07-06 18:23:30,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:23:30,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998243410] [2021-07-06 18:23:30,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:23:30,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:23:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:30,256 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:30,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:30,260 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:30,261 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:23:30,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:23:30,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2021-07-06 18:23:30,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:23:30,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690512520] [2021-07-06 18:23:30,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:23:30,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:23:30,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:30,269 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:30,271 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:30,272 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:23:30,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:23:30,272 INFO L82 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 1 times [2021-07-06 18:23:30,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:23:30,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531525817] [2021-07-06 18:23:30,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:23:30,272 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:23:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:30,277 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:30,279 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:30,281 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:23:30,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:30,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 18:23:30,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:30,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 18:23:30,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 06:23:30 BoogieIcfgContainer [2021-07-06 18:23:30,331 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 18:23:30,331 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 18:23:30,331 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 18:23:30,331 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 18:23:30,332 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 06:23:29" (3/4) ... [2021-07-06 18:23:30,333 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-07-06 18:23:30,361 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 18:23:30,361 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 18:23:30,362 INFO L168 Benchmark]: Toolchain (without parser) took 1521.70 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 44.3 MB in the beginning and 46.0 MB in the end (delta: -1.7 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2021-07-06 18:23:30,377 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 62.9 MB. Free memory is still 44.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 18:23:30,377 INFO L168 Benchmark]: CACSL2BoogieTranslator took 112.86 ms. Allocated memory is still 62.9 MB. Free memory was 44.1 MB in the beginning and 35.7 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-07-06 18:23:30,377 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.79 ms. Allocated memory is still 62.9 MB. Free memory was 35.5 MB in the beginning and 34.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 18:23:30,378 INFO L168 Benchmark]: Boogie Preprocessor took 15.84 ms. Allocated memory is still 62.9 MB. Free memory was 34.3 MB in the beginning and 47.1 MB in the end (delta: -12.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. [2021-07-06 18:23:30,378 INFO L168 Benchmark]: RCFGBuilder took 161.19 ms. Allocated memory is still 62.9 MB. Free memory was 46.9 MB in the beginning and 38.8 MB in the end (delta: 8.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-07-06 18:23:30,379 INFO L168 Benchmark]: BuchiAutomizer took 1170.65 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 38.5 MB in the beginning and 47.5 MB in the end (delta: -9.0 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2021-07-06 18:23:30,379 INFO L168 Benchmark]: Witness Printer took 30.01 ms. Allocated memory is still 75.5 MB. Free memory was 47.5 MB in the beginning and 46.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 18:23:30,381 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 62.9 MB. Free memory is still 44.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 112.86 ms. Allocated memory is still 62.9 MB. Free memory was 44.1 MB in the beginning and 35.7 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 14.79 ms. Allocated memory is still 62.9 MB. Free memory was 35.5 MB in the beginning and 34.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 15.84 ms. Allocated memory is still 62.9 MB. Free memory was 34.3 MB in the beginning and 47.1 MB in the end (delta: -12.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. * RCFGBuilder took 161.19 ms. Allocated memory is still 62.9 MB. Free memory was 46.9 MB in the beginning and 38.8 MB in the end (delta: 8.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1170.65 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 38.5 MB in the beginning and 47.5 MB in the end (delta: -9.0 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * Witness Printer took 30.01 ms. Allocated memory is still 75.5 MB. Free memory was 47.5 MB in the beginning and 46.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i and consists of 5 locations. The remainder module has 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.1s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 1. Automata minimization 6.9ms AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 4 SDtfs, 7 SDslu, 6 SDs, 0 SdLazy, 10 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.4ms Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax185 hnf107 lsp57 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq175 hnf96 smp100 dnf155 smp92 tf105 neg95 sie115 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 28ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 10]: 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@24ea5a69=0, \result=0, i=-5} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 10]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE i < 0 Loop: [L10] COND FALSE !(i != -5) [L9] COND TRUE i < 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-07-06 18:23:30,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...