./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/ComplInterv2.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/ComplInterv2.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 a392558b157800b1e3eb593ecf3b38e4b620b365 ................................................................................................................................................................................................................................................................................. 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 18:23:02,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 18:23:02,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 18:23:02,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 18:23:02,931 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 18:23:02,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 18:23:02,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 18:23:02,938 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 18:23:02,940 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 18:23:02,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 18:23:02,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 18:23:02,945 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 18:23:02,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 18:23:02,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 18:23:02,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 18:23:02,948 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 18:23:02,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 18:23:02,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 18:23:02,952 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 18:23:02,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 18:23:02,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 18:23:02,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 18:23:02,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 18:23:02,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 18:23:02,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 18:23:02,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 18:23:02,965 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 18:23:02,966 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 18:23:02,966 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 18:23:02,966 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 18:23:02,967 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 18:23:02,967 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 18:23:02,968 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 18:23:02,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 18:23:02,969 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 18:23:02,969 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 18:23:02,970 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 18:23:02,970 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 18:23:02,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 18:23:02,971 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 18:23:02,972 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 18:23:02,972 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-07-06 18:23:03,005 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 18:23:03,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 18:23:03,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 18:23:03,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 18:23:03,007 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 18:23:03,007 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 18:23:03,008 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 18:23:03,008 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 18:23:03,008 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 18:23:03,009 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 18:23:03,009 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 18:23:03,009 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 18:23:03,010 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 18:23:03,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 18:23:03,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 18:23:03,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 18:23:03,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 18:23:03,010 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 18:23:03,010 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 18:23:03,011 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 18:23:03,011 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 18:23:03,011 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 18:23:03,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 18:23:03,011 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 18:23:03,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 18:23:03,011 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 18:23:03,012 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 18:23:03,012 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 18:23:03,013 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a392558b157800b1e3eb593ecf3b38e4b620b365 [2021-07-06 18:23:03,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 18:23:03,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 18:23:03,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 18:23:03,237 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 18:23:03,238 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 18:23:03,239 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/ComplInterv2.c [2021-07-06 18:23:03,287 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e6297b44/1f0b6c277564419994b109a646fb2dfa/FLAG572fa18ad [2021-07-06 18:23:03,625 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 18:23:03,625 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/ComplInterv2.c [2021-07-06 18:23:03,629 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e6297b44/1f0b6c277564419994b109a646fb2dfa/FLAG572fa18ad [2021-07-06 18:23:03,638 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e6297b44/1f0b6c277564419994b109a646fb2dfa [2021-07-06 18:23:03,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 18:23:03,642 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 18:23:03,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 18:23:03,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 18:23:03,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 18:23:03,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 06:23:03" (1/1) ... [2021-07-06 18:23:03,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@568b46af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:03, skipping insertion in model container [2021-07-06 18:23:03,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 06:23:03" (1/1) ... [2021-07-06 18:23:03,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 18:23:03,661 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 18:23:03,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 18:23:03,750 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 18:23:03,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 18:23:03,766 INFO L208 MainTranslator]: Completed translation [2021-07-06 18:23:03,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:03 WrapperNode [2021-07-06 18:23:03,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 18:23:03,768 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 18:23:03,768 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 18:23:03,768 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 18:23:03,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:03" (1/1) ... [2021-07-06 18:23:03,774 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:03" (1/1) ... [2021-07-06 18:23:03,786 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 18:23:03,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 18:23:03,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 18:23:03,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 18:23:03,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:03" (1/1) ... [2021-07-06 18:23:03,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:03" (1/1) ... [2021-07-06 18:23:03,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:03" (1/1) ... [2021-07-06 18:23:03,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:03" (1/1) ... [2021-07-06 18:23:03,810 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:03" (1/1) ... [2021-07-06 18:23:03,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:03" (1/1) ... [2021-07-06 18:23:03,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:03" (1/1) ... [2021-07-06 18:23:03,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 18:23:03,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 18:23:03,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 18:23:03,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 18:23:03,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:03" (1/1) ... [2021-07-06 18:23:03,818 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:23:03,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:23:03,831 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 18:23:03,853 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 18:23:03,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 18:23:03,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 18:23:03,997 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 18:23:03,998 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-07-06 18:23:03,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 06:23:03 BoogieIcfgContainer [2021-07-06 18:23:03,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 18:23:04,000 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 18:23:04,000 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 18:23:04,002 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 18:23:04,003 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 18:23:04,003 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 06:23:03" (1/3) ... [2021-07-06 18:23:04,004 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@207ef1a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 06:23:04, skipping insertion in model container [2021-07-06 18:23:04,004 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 18:23:04,004 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:03" (2/3) ... [2021-07-06 18:23:04,004 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@207ef1a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 06:23:04, skipping insertion in model container [2021-07-06 18:23:04,004 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 18:23:04,005 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 06:23:03" (3/3) ... [2021-07-06 18:23:04,006 INFO L389 chiAutomizerObserver]: Analyzing ICFG ComplInterv2.c [2021-07-06 18:23:04,046 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 18:23:04,046 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 18:23:04,047 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 18:23:04,047 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 18:23:04,047 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 18:23:04,047 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 18:23:04,047 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 18:23:04,047 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 18:23:04,056 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:23:04,067 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-07-06 18:23:04,067 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 18:23:04,067 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 18:23:04,075 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-07-06 18:23:04,075 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-07-06 18:23:04,075 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 18:23:04,076 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:23:04,077 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-07-06 18:23:04,077 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 18:23:04,077 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 18:23:04,077 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-07-06 18:23:04,078 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-07-06 18:23:04,082 INFO L791 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; 9#L10-1true [2021-07-06 18:23:04,082 INFO L793 eck$LassoCheckResult]: Loop: 9#L10-1true assume !!(0 != main_~i~0); 3#L10true assume !(main_~i~0 > -5 && main_~i~0 < 5); 9#L10-1true [2021-07-06 18:23:04,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:23:04,086 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-07-06 18:23:04,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:23:04,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374923229] [2021-07-06 18:23:04,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:23:04,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:23:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:04,147 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:04,154 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:04,162 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:23:04,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:23:04,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1298, now seen corresponding path program 1 times [2021-07-06 18:23:04,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:23:04,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885328388] [2021-07-06 18:23:04,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:23:04,164 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:23:04,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:04,167 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:04,169 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:04,170 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:23:04,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:23:04,171 INFO L82 PathProgramCache]: Analyzing trace with hash 31089, now seen corresponding path program 1 times [2021-07-06 18:23:04,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:23:04,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736254436] [2021-07-06 18:23:04,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:23:04,172 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:23:04,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:04,175 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:04,187 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:04,188 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:23:04,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:04,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-06 18:23:04,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:04,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:23:04,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 06:23:04 BoogieIcfgContainer [2021-07-06 18:23:04,281 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 18:23:04,281 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 18:23:04,282 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 18:23:04,282 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 18:23:04,282 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 06:23:03" (3/4) ... [2021-07-06 18:23:04,284 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-07-06 18:23:04,304 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 18:23:04,305 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 18:23:04,306 INFO L168 Benchmark]: Toolchain (without parser) took 663.71 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 29.8 MB in the beginning and 35.1 MB in the end (delta: -5.2 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2021-07-06 18:23:04,306 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 52.4 MB. Free memory was 33.8 MB in the beginning and 33.7 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 18:23:04,307 INFO L168 Benchmark]: CACSL2BoogieTranslator took 122.91 ms. Allocated memory is still 52.4 MB. Free memory was 29.6 MB in the beginning and 34.7 MB in the end (delta: -5.1 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2021-07-06 18:23:04,307 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.68 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 34.7 MB in the beginning and 49.7 MB in the end (delta: -15.0 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. [2021-07-06 18:23:04,308 INFO L168 Benchmark]: Boogie Preprocessor took 25.62 ms. Allocated memory is still 65.0 MB. Free memory was 49.7 MB in the beginning and 48.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 18:23:04,309 INFO L168 Benchmark]: RCFGBuilder took 185.55 ms. Allocated memory is still 65.0 MB. Free memory was 48.6 MB in the beginning and 39.9 MB in the end (delta: 8.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-07-06 18:23:04,309 INFO L168 Benchmark]: BuchiAutomizer took 281.13 ms. Allocated memory is still 65.0 MB. Free memory was 39.7 MB in the beginning and 36.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2021-07-06 18:23:04,310 INFO L168 Benchmark]: Witness Printer took 23.41 ms. Allocated memory is still 65.0 MB. Free memory was 36.7 MB in the beginning and 35.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 18:23:04,313 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 52.4 MB. Free memory was 33.8 MB in the beginning and 33.7 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 122.91 ms. Allocated memory is still 52.4 MB. Free memory was 29.6 MB in the beginning and 34.7 MB in the end (delta: -5.1 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 19.68 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 34.7 MB in the beginning and 49.7 MB in the end (delta: -15.0 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.62 ms. Allocated memory is still 65.0 MB. Free memory was 49.7 MB in the beginning and 48.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 185.55 ms. Allocated memory is still 65.0 MB. Free memory was 48.6 MB in the beginning and 39.9 MB in the end (delta: 8.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 281.13 ms. Allocated memory is still 65.0 MB. Free memory was 39.7 MB in the beginning and 36.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Witness Printer took 23.41 ms. Allocated memory is still 65.0 MB. Free memory was 36.7 MB in the beginning and 35.1 MB in the end (delta: 1.6 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 Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.2s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: No data available LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - 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@e3f9ddf=0, \result=0, i=5} - 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() Loop: [L9] COND TRUE i != 0 [L10] COND FALSE !(i > -5 && i < 5) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-07-06 18:23:04,343 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...