./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/Flip.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version c3fed411 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/Flip.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 d9e2051c5b6571a6a73804cb724a9fb9a88e5e404b5e850e3a8c166e2eba4aad --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 09:21:37,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 09:21:37,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 09:21:38,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 09:21:38,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 09:21:38,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 09:21:38,053 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 09:21:38,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 09:21:38,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 09:21:38,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 09:21:38,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 09:21:38,061 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 09:21:38,061 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 09:21:38,065 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 09:21:38,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 09:21:38,068 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 09:21:38,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 09:21:38,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 09:21:38,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 09:21:38,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 09:21:38,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 09:21:38,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 09:21:38,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 09:21:38,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 09:21:38,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 09:21:38,082 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 09:21:38,082 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 09:21:38,083 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 09:21:38,084 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 09:21:38,085 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 09:21:38,085 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 09:21:38,086 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 09:21:38,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 09:21:38,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 09:21:38,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 09:21:38,088 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 09:21:38,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 09:21:38,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 09:21:38,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 09:21:38,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 09:21:38,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 09:21:38,091 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-16 09:21:38,117 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 09:21:38,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 09:21:38,118 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 09:21:38,118 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 09:21:38,118 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 09:21:38,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 09:21:38,119 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 09:21:38,119 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-16 09:21:38,119 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-16 09:21:38,119 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-16 09:21:38,119 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-16 09:21:38,120 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-16 09:21:38,120 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-16 09:21:38,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 09:21:38,120 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 09:21:38,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 09:21:38,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 09:21:38,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-16 09:21:38,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-16 09:21:38,121 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-16 09:21:38,121 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 09:21:38,121 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-16 09:21:38,121 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 09:21:38,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-16 09:21:38,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 09:21:38,122 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 09:21:38,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 09:21:38,122 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 09:21:38,123 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 09:21:38,123 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-16 09:21:38,123 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9e2051c5b6571a6a73804cb724a9fb9a88e5e404b5e850e3a8c166e2eba4aad [2021-12-16 09:21:38,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 09:21:38,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 09:21:38,330 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 09:21:38,331 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 09:21:38,332 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 09:21:38,333 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/Flip.c [2021-12-16 09:21:38,377 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb8a743c2/d1ccdc2c75cc4c87a129b0b455d4ff7a/FLAG0df87dd3a [2021-12-16 09:21:38,742 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 09:21:38,742 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/Flip.c [2021-12-16 09:21:38,753 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb8a743c2/d1ccdc2c75cc4c87a129b0b455d4ff7a/FLAG0df87dd3a [2021-12-16 09:21:38,762 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb8a743c2/d1ccdc2c75cc4c87a129b0b455d4ff7a [2021-12-16 09:21:38,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 09:21:38,767 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 09:21:38,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 09:21:38,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 09:21:38,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 09:21:38,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:21:38" (1/1) ... [2021-12-16 09:21:38,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30495aa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:21:38, skipping insertion in model container [2021-12-16 09:21:38,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:21:38" (1/1) ... [2021-12-16 09:21:38,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 09:21:38,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 09:21:38,911 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 09:21:38,913 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 09:21:38,923 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 09:21:38,929 INFO L208 MainTranslator]: Completed translation [2021-12-16 09:21:38,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:21:38 WrapperNode [2021-12-16 09:21:38,930 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 09:21:38,930 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 09:21:38,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 09:21:38,930 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 09:21:38,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:21:38" (1/1) ... [2021-12-16 09:21:38,937 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:21:38" (1/1) ... [2021-12-16 09:21:38,945 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2021-12-16 09:21:38,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 09:21:38,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 09:21:38,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 09:21:38,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 09:21:38,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:21:38" (1/1) ... [2021-12-16 09:21:38,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:21:38" (1/1) ... [2021-12-16 09:21:38,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:21:38" (1/1) ... [2021-12-16 09:21:38,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:21:38" (1/1) ... [2021-12-16 09:21:38,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:21:38" (1/1) ... [2021-12-16 09:21:38,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:21:38" (1/1) ... [2021-12-16 09:21:38,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:21:38" (1/1) ... [2021-12-16 09:21:38,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 09:21:38,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 09:21:38,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 09:21:38,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 09:21:38,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:21:38" (1/1) ... [2021-12-16 09:21:38,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:21:38,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:21:38,987 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-16 09:21:38,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-16 09:21:39,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 09:21:39,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 09:21:39,050 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 09:21:39,051 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 09:21:39,088 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 09:21:39,092 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 09:21:39,092 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 09:21:39,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:21:39 BoogieIcfgContainer [2021-12-16 09:21:39,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 09:21:39,094 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-16 09:21:39,094 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-16 09:21:39,097 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-16 09:21:39,098 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-16 09:21:39,098 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 16.12 09:21:38" (1/3) ... [2021-12-16 09:21:39,099 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@44dbfe7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.12 09:21:39, skipping insertion in model container [2021-12-16 09:21:39,100 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-16 09:21:39,100 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:21:38" (2/3) ... [2021-12-16 09:21:39,100 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@44dbfe7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.12 09:21:39, skipping insertion in model container [2021-12-16 09:21:39,100 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-16 09:21:39,100 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:21:39" (3/3) ... [2021-12-16 09:21:39,101 INFO L388 chiAutomizerObserver]: Analyzing ICFG Flip.c [2021-12-16 09:21:39,138 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-16 09:21:39,138 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-16 09:21:39,138 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-16 09:21:39,138 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-16 09:21:39,138 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-16 09:21:39,139 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-16 09:21:39,139 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-16 09:21:39,139 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-16 09:21:39,147 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:21:39,157 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-16 09:21:39,157 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-16 09:21:39,157 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-16 09:21:39,160 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-16 09:21:39,160 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-16 09:21:39,160 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-16 09:21:39,160 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:21:39,161 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-16 09:21:39,161 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-16 09:21:39,161 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-16 09:21:39,161 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-16 09:21:39,161 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-16 09:21:39,165 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0; 5#L13-2true [2021-12-16 09:21:39,165 INFO L793 eck$LassoCheckResult]: Loop: 5#L13-2true assume !!(0 != main_~i~0#1 && 0 != main_~j~0#1);main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1; 5#L13-2true [2021-12-16 09:21:39,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:21:39,169 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-16 09:21:39,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:21:39,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528875984] [2021-12-16 09:21:39,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:21:39,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:21:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:21:39,223 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 09:21:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:21:39,238 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 09:21:39,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:21:39,240 INFO L85 PathProgramCache]: Analyzing trace with hash 42, now seen corresponding path program 1 times [2021-12-16 09:21:39,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:21:39,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844602133] [2021-12-16 09:21:39,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:21:39,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:21:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:21:39,252 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 09:21:39,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:21:39,257 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 09:21:39,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:21:39,262 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-12-16 09:21:39,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:21:39,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25562772] [2021-12-16 09:21:39,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:21:39,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:21:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:21:39,266 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 09:21:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:21:39,268 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 09:21:39,333 INFO L210 LassoAnalysis]: Preferences: [2021-12-16 09:21:39,334 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-16 09:21:39,334 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-16 09:21:39,334 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-16 09:21:39,334 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-16 09:21:39,334 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:21:39,334 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-16 09:21:39,335 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-16 09:21:39,335 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip.c_Iteration1_Lasso [2021-12-16 09:21:39,335 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-16 09:21:39,335 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-16 09:21:39,346 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:21:39,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:21:39,367 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:21:39,370 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:21:39,373 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:21:39,375 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:21:39,532 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-16 09:21:39,533 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-16 09:21:39,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:21:39,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:21:39,536 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-16 09:21:39,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-16 09:21:39,539 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-16 09:21:39,539 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:21:39,563 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-16 09:21:39,564 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: [] [2021-12-16 09:21:39,582 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 [2021-12-16 09:21:39,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:21:39,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:21:39,588 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-16 09:21:39,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-16 09:21:39,591 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-16 09:21:39,591 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:21:39,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-12-16 09:21:39,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:21:39,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:21:39,634 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-16 09:21:39,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-16 09:21:39,636 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-16 09:21:39,636 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:21:39,953 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-16 09:21:39,953 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0#1=0, ULTIMATE.start_main_~t~0#1=0, ULTIMATE.start_main_~j~0#1=0} Honda state: {ULTIMATE.start_main_~i~0#1=-7, ULTIMATE.start_main_~t~0#1=0, ULTIMATE.start_main_~j~0#1=-7} Generalized eigenvectors: [{ULTIMATE.start_main_~i~0#1=0, ULTIMATE.start_main_~t~0#1=0, ULTIMATE.start_main_~j~0#1=0}, {ULTIMATE.start_main_~i~0#1=0, ULTIMATE.start_main_~t~0#1=-7, ULTIMATE.start_main_~j~0#1=0}, {ULTIMATE.start_main_~i~0#1=0, ULTIMATE.start_main_~t~0#1=0, ULTIMATE.start_main_~j~0#1=0}] Lambdas: [8, 0, 3] Nus: [0, 0] [2021-12-16 09:21:39,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-12-16 09:21:39,969 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:21:39,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:21:39,979 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-16 09:21:39,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-16 09:21:39,980 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-16 09:21:39,982 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:21:39,989 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-16 09:21:39,989 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1#1=0} Honda state: {ULTIMATE.start_main_#t~nondet1#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-16 09:21:40,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-12-16 09:21:40,008 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:21:40,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:21:40,009 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-16 09:21:40,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-16 09:21:40,024 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-16 09:21:40,028 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:21:40,040 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-16 09:21:40,040 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: [] [2021-12-16 09:21:40,057 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 [2021-12-16 09:21:40,057 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:21:40,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:21:40,058 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-16 09:21:40,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-16 09:21:40,076 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-16 09:21:40,076 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:21:40,083 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-16 09:21:40,083 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res#1=0} Honda state: {ULTIMATE.start_main_#res#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-16 09:21:40,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-12-16 09:21:40,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:21:40,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:21:40,101 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-16 09:21:40,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-16 09:21:40,103 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-16 09:21:40,103 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:21:40,117 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-16 09:21:40,117 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0#1=0} Honda state: {ULTIMATE.start_main_#t~nondet0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-16 09:21:40,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-12-16 09:21:40,140 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2021-12-16 09:21:40,141 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2021-12-16 09:21:40,141 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2021-12-16 09:21:40,141 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2021-12-16 09:21:40,142 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2021-12-16 09:21:40,142 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2021-12-16 09:21:40,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 16.12 09:21:40 BoogieIcfgContainer [2021-12-16 09:21:40,149 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-16 09:21:40,149 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 09:21:40,149 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 09:21:40,149 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 09:21:40,150 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:21:39" (3/4) ... [2021-12-16 09:21:40,152 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-16 09:21:40,175 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-16 09:21:40,175 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 09:21:40,176 INFO L158 Benchmark]: Toolchain (without parser) took 1409.11ms. Allocated memory was 98.6MB in the beginning and 127.9MB in the end (delta: 29.4MB). Free memory was 70.4MB in the beginning and 84.9MB in the end (delta: -14.6MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. [2021-12-16 09:21:40,177 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 98.6MB. Free memory is still 55.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 09:21:40,177 INFO L158 Benchmark]: CACSL2BoogieTranslator took 161.96ms. Allocated memory is still 98.6MB. Free memory was 70.1MB in the beginning and 74.6MB in the end (delta: -4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-16 09:21:40,177 INFO L158 Benchmark]: Boogie Procedure Inliner took 15.06ms. Allocated memory is still 98.6MB. Free memory was 74.6MB in the beginning and 73.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 09:21:40,178 INFO L158 Benchmark]: Boogie Preprocessor took 9.14ms. Allocated memory is still 98.6MB. Free memory was 73.2MB in the beginning and 72.5MB in the end (delta: 712.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 09:21:40,178 INFO L158 Benchmark]: RCFGBuilder took 138.35ms. Allocated memory is still 98.6MB. Free memory was 72.5MB in the beginning and 65.2MB in the end (delta: 7.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-16 09:21:40,178 INFO L158 Benchmark]: BuchiAutomizer took 1054.51ms. Allocated memory was 98.6MB in the beginning and 127.9MB in the end (delta: 29.4MB). Free memory was 65.2MB in the beginning and 86.4MB in the end (delta: -21.2MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. [2021-12-16 09:21:40,179 INFO L158 Benchmark]: Witness Printer took 26.33ms. Allocated memory is still 127.9MB. Free memory was 86.4MB in the beginning and 84.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 09:21:40,180 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 98.6MB. Free memory is still 55.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 161.96ms. Allocated memory is still 98.6MB. Free memory was 70.1MB in the beginning and 74.6MB in the end (delta: -4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 15.06ms. Allocated memory is still 98.6MB. Free memory was 74.6MB in the beginning and 73.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 9.14ms. Allocated memory is still 98.6MB. Free memory was 73.2MB in the beginning and 72.5MB in the end (delta: 712.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 138.35ms. Allocated memory is still 98.6MB. Free memory was 72.5MB in the beginning and 65.2MB in the end (delta: 7.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 1054.51ms. Allocated memory was 98.6MB in the beginning and 127.9MB in the end (delta: 29.4MB). Free memory was 65.2MB in the beginning and 86.4MB in the end (delta: -21.2MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. * Witness Printer took 26.33ms. Allocated memory is still 127.9MB. Free memory was 86.4MB in the beginning and 84.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false * 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 1.0s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.9s. 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: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax161 hnf100 lsp61 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq214 hnf93 smp100 dnf276 smp100 tf100 neg93 sie114 LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - GeometricNonTerminationArgumentResult [Line: 13]: Nontermination argument in form of an infinite program execution. [2021-12-16 09:21:40,186 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2021-12-16 09:21:40,186 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2021-12-16 09:21:40,187 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2021-12-16 09:21:40,187 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2021-12-16 09:21:40,187 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2021-12-16 09:21:40,188 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2021-12-16 09:21:40,188 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2021-12-16 09:21:40,189 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2021-12-16 09:21:40,189 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2021-12-16 09:21:40,190 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2021-12-16 09:21:40,190 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2021-12-16 09:21:40,190 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false Nontermination argument in form of an infinite execution State at position 0 is {j=0, i=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@72876c03=0, ~unnamed0~0~true=1, \result=0, ~unnamed0~0~false=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@f6c512=0, t=0} State at position 1 is {j=-7, i=-7, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@72876c03=0, ~unnamed0~0~true=1, \result=0, ~unnamed0~0~false=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@f6c512=0, t=0} For i>1, the state at position i is {j=-7 + sum_{k=0}^i 0, i=-7 + sum_{k=0}^i 0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@72876c03=0 + sum_{k=0}^i 0, ~unnamed0~0~true=1 + sum_{k=0}^i 0, \result=0 + sum_{k=0}^i 0, ~unnamed0~0~false=0 + sum_{k=0}^i 0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@f6c512=0 + sum_{k=0}^i 0, t=0 + sum_{k=0}^i -7*0^k} - StatisticsResult: NonterminationArgumentStatistics Unbounded Execution 1GEVs Lambdas: [8, 0, 3] Mus: [0, 0] - NonterminatingLassoResult [Line: 13]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int j; [L8] int t; [L9] i = __VERIFIER_nondet_int() [L10] j = __VERIFIER_nondet_int() [L11] t = 0 Loop: [L13] COND TRUE i != 0 && j != 0 [L14] t = i [L15] i = j [L16] j = t End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-16 09:21:40,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)