./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 [2021-12-19 17:17:38,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 17:17:38,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 17:17:38,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 17:17:38,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 17:17:38,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 17:17:38,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 17:17:38,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 17:17:38,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 17:17:38,800 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 17:17:38,801 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 17:17:38,802 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 17:17:38,802 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 17:17:38,804 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 17:17:38,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 17:17:38,808 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 17:17:38,808 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 17:17:38,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 17:17:38,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 17:17:38,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 17:17:38,818 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 17:17:38,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 17:17:38,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 17:17:38,822 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 17:17:38,827 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 17:17:38,828 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 17:17:38,828 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 17:17:38,829 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 17:17:38,830 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 17:17:38,830 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 17:17:38,831 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 17:17:38,832 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 17:17:38,833 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 17:17:38,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 17:17:38,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 17:17:38,835 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 17:17:38,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 17:17:38,836 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 17:17:38,836 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 17:17:38,837 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 17:17:38,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 17:17:38,838 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-19 17:17:38,868 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 17:17:38,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 17:17:38,869 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 17:17:38,869 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 17:17:38,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 17:17:38,871 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 17:17:38,871 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 17:17:38,871 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-19 17:17:38,871 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-19 17:17:38,871 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-19 17:17:38,872 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-19 17:17:38,872 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-19 17:17:38,873 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-19 17:17:38,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 17:17:38,873 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 17:17:38,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 17:17:38,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 17:17:38,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-19 17:17:38,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-19 17:17:38,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-19 17:17:38,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 17:17:38,874 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-19 17:17:38,874 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 17:17:38,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-19 17:17:38,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 17:17:38,876 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 17:17:38,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 17:17:38,876 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 17:17:38,877 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 17:17:38,877 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-19 17:17:38,878 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9e2051c5b6571a6a73804cb724a9fb9a88e5e404b5e850e3a8c166e2eba4aad [2021-12-19 17:17:39,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 17:17:39,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 17:17:39,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 17:17:39,130 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 17:17:39,130 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 17:17:39,131 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/Flip.c [2021-12-19 17:17:39,189 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfe2bfb94/bcb5f58f2d1545b09b75acd65873e5ff/FLAG60e48730f [2021-12-19 17:17:39,562 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 17:17:39,563 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/Flip.c [2021-12-19 17:17:39,570 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfe2bfb94/bcb5f58f2d1545b09b75acd65873e5ff/FLAG60e48730f [2021-12-19 17:17:39,988 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfe2bfb94/bcb5f58f2d1545b09b75acd65873e5ff [2021-12-19 17:17:39,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 17:17:39,992 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 17:17:39,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 17:17:39,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 17:17:40,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 17:17:40,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:17:39" (1/1) ... [2021-12-19 17:17:40,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cca8045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:17:40, skipping insertion in model container [2021-12-19 17:17:40,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:17:39" (1/1) ... [2021-12-19 17:17:40,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 17:17:40,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 17:17:40,113 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 17:17:40,115 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 17:17:40,143 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 17:17:40,153 INFO L208 MainTranslator]: Completed translation [2021-12-19 17:17:40,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:17:40 WrapperNode [2021-12-19 17:17:40,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 17:17:40,154 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 17:17:40,154 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 17:17:40,154 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 17:17:40,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:17:40" (1/1) ... [2021-12-19 17:17:40,165 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:17:40" (1/1) ... [2021-12-19 17:17:40,178 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2021-12-19 17:17:40,179 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 17:17:40,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 17:17:40,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 17:17:40,179 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 17:17:40,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:17:40" (1/1) ... [2021-12-19 17:17:40,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:17:40" (1/1) ... [2021-12-19 17:17:40,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:17:40" (1/1) ... [2021-12-19 17:17:40,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:17:40" (1/1) ... [2021-12-19 17:17:40,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:17:40" (1/1) ... [2021-12-19 17:17:40,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:17:40" (1/1) ... [2021-12-19 17:17:40,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:17:40" (1/1) ... [2021-12-19 17:17:40,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 17:17:40,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 17:17:40,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 17:17:40,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 17:17:40,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:17:40" (1/1) ... [2021-12-19 17:17:40,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:17:40,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:17:40,232 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) [2021-12-19 17:17:40,251 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 [2021-12-19 17:17:40,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 17:17:40,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 17:17:40,309 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 17:17:40,310 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 17:17:40,373 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 17:17:40,379 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 17:17:40,379 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-19 17:17:40,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:17:40 BoogieIcfgContainer [2021-12-19 17:17:40,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 17:17:40,382 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-19 17:17:40,382 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-19 17:17:40,384 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-19 17:17:40,385 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:17:40,385 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.12 05:17:39" (1/3) ... [2021-12-19 17:17:40,386 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@17f944 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 05:17:40, skipping insertion in model container [2021-12-19 17:17:40,387 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:17:40,387 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:17:40" (2/3) ... [2021-12-19 17:17:40,387 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@17f944 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 05:17:40, skipping insertion in model container [2021-12-19 17:17:40,387 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:17:40,387 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:17:40" (3/3) ... [2021-12-19 17:17:40,388 INFO L388 chiAutomizerObserver]: Analyzing ICFG Flip.c [2021-12-19 17:17:40,431 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-19 17:17:40,431 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-19 17:17:40,431 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-19 17:17:40,431 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-19 17:17:40,431 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-19 17:17:40,431 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-19 17:17:40,431 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-19 17:17:40,431 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-19 17:17:40,441 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) [2021-12-19 17:17:40,453 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-19 17:17:40,453 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:17:40,453 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:17:40,457 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-19 17:17:40,457 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-19 17:17:40,457 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-19 17:17:40,458 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) [2021-12-19 17:17:40,458 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-19 17:17:40,459 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:17:40,459 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:17:40,459 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-19 17:17:40,459 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-19 17:17:40,464 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 [2021-12-19 17:17:40,464 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 [2021-12-19 17:17:40,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:17:40,468 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-19 17:17:40,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:17:40,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018631132] [2021-12-19 17:17:40,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:17:40,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:17:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:17:40,532 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:17:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:17:40,557 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:17:40,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:17:40,561 INFO L85 PathProgramCache]: Analyzing trace with hash 42, now seen corresponding path program 1 times [2021-12-19 17:17:40,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:17:40,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990824832] [2021-12-19 17:17:40,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:17:40,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:17:40,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:17:40,575 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:17:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:17:40,587 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:17:40,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:17:40,597 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-12-19 17:17:40,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:17:40,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876662210] [2021-12-19 17:17:40,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:17:40,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:17:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:17:40,605 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:17:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:17:40,610 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:17:40,755 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:17:40,755 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:17:40,756 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:17:40,756 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:17:40,756 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:17:40,756 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:17:40,756 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:17:40,756 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:17:40,756 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip.c_Iteration1_Lasso [2021-12-19 17:17:40,756 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:17:40,757 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:17:40,775 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:17:40,786 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:17:40,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:17:40,813 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:17:40,817 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:17:40,820 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:17:40,977 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:17:40,978 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:17:40,979 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:17:40,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:17:40,981 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) [2021-12-19 17:17:41,006 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:17:41,006 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:17:41,023 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 [2021-12-19 17:17:41,035 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:17:41,036 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: [] [2021-12-19 17:17:41,070 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 [2021-12-19 17:17:41,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:17:41,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:17:41,073 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) [2021-12-19 17:17:41,074 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 [2021-12-19 17:17:41,076 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:17:41,076 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:17:41,113 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 [2021-12-19 17:17:41,114 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:17:41,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:17:41,115 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) [2021-12-19 17:17:41,116 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 [2021-12-19 17:17:41,117 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:17:41,117 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:17:41,438 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:17:41,438 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] [2021-12-19 17:17:41,454 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 [2021-12-19 17:17:41,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:17:41,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:17:41,461 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) [2021-12-19 17:17:41,463 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:17:41,463 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:17:41,467 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 [2021-12-19 17:17:41,471 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:17:41,472 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: [] [2021-12-19 17:17:41,487 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 [2021-12-19 17:17:41,488 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:17:41,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:17:41,489 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) [2021-12-19 17:17:41,489 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 [2021-12-19 17:17:41,492 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:17:41,492 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:17:41,503 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:17:41,503 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: [] [2021-12-19 17:17:41,524 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 [2021-12-19 17:17:41,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:17:41,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:17:41,525 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) [2021-12-19 17:17:41,526 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 [2021-12-19 17:17:41,529 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:17:41,529 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:17:41,543 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:17:41,543 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: [] [2021-12-19 17:17:41,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-12-19 17:17:41,560 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:17:41,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:17:41,561 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) [2021-12-19 17:17:41,562 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 [2021-12-19 17:17:41,563 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:17:41,563 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:17:41,580 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:17:41,580 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: [] [2021-12-19 17:17:41,604 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 [2021-12-19 17:17:41,610 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2021-12-19 17:17:41,612 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2021-12-19 17:17:41,612 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2021-12-19 17:17:41,612 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2021-12-19 17:17:41,613 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2021-12-19 17:17:41,613 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2021-12-19 17:17:41,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.12 05:17:41 BoogieIcfgContainer [2021-12-19 17:17:41,620 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-19 17:17:41,620 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-19 17:17:41,620 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-19 17:17:41,620 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-19 17:17:41,621 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:17:40" (3/4) ... [2021-12-19 17:17:41,623 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-19 17:17:41,670 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-19 17:17:41,670 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-19 17:17:41,671 INFO L158 Benchmark]: Toolchain (without parser) took 1678.17ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 73.8MB in the beginning and 93.6MB in the end (delta: -19.8MB). Peak memory consumption was 933.5kB. Max. memory is 16.1GB. [2021-12-19 17:17:41,677 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 102.8MB. Free memory was 58.7MB in the beginning and 58.6MB in the end (delta: 43.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 17:17:41,678 INFO L158 Benchmark]: CACSL2BoogieTranslator took 158.31ms. Allocated memory is still 102.8MB. Free memory was 73.5MB in the beginning and 81.6MB in the end (delta: -8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-19 17:17:41,678 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.52ms. Allocated memory is still 102.8MB. Free memory was 81.6MB in the beginning and 80.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 17:17:41,679 INFO L158 Benchmark]: Boogie Preprocessor took 11.55ms. Allocated memory is still 102.8MB. Free memory was 80.1MB in the beginning and 79.3MB in the end (delta: 823.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 17:17:41,679 INFO L158 Benchmark]: RCFGBuilder took 189.64ms. Allocated memory is still 102.8MB. Free memory was 79.3MB in the beginning and 71.7MB in the end (delta: 7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-19 17:17:41,680 INFO L158 Benchmark]: BuchiAutomizer took 1238.23ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 71.7MB in the beginning and 95.7MB in the end (delta: -24.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2021-12-19 17:17:41,681 INFO L158 Benchmark]: Witness Printer took 49.80ms. Allocated memory is still 125.8MB. Free memory was 95.1MB in the beginning and 93.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 17:17:41,687 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 102.8MB. Free memory was 58.7MB in the beginning and 58.6MB in the end (delta: 43.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 158.31ms. Allocated memory is still 102.8MB. Free memory was 73.5MB in the beginning and 81.6MB in the end (delta: -8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.52ms. Allocated memory is still 102.8MB. Free memory was 81.6MB in the beginning and 80.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 11.55ms. Allocated memory is still 102.8MB. Free memory was 80.1MB in the beginning and 79.3MB in the end (delta: 823.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 189.64ms. Allocated memory is still 102.8MB. Free memory was 79.3MB in the beginning and 71.7MB in the end (delta: 7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1238.23ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 71.7MB in the beginning and 95.7MB in the end (delta: -24.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 49.80ms. Allocated memory is still 125.8MB. Free memory was 95.1MB in the beginning and 93.6MB 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 1.1s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 1.1s. 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: 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. [2021-12-19 17:17:41,707 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2021-12-19 17:17:41,707 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2021-12-19 17:17:41,708 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2021-12-19 17:17:41,708 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2021-12-19 17:17:41,709 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2021-12-19 17:17:41,709 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2021-12-19 17:17:41,709 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2021-12-19 17:17:41,709 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2021-12-19 17:17:41,715 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2021-12-19 17:17:41,715 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2021-12-19 17:17:41,716 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2021-12-19 17:17:41,716 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@440178f0=0, ~unnamed0~0~true=1, ~unnamed0~0~false=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7fce6fc3=0, t=0} State at position 1 is {j=-7, i=-7, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@440178f0=0, ~unnamed0~0~true=1, ~unnamed0~0~false=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7fce6fc3=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@440178f0=0 + sum_{k=0}^i 0, ~unnamed0~0~true=1 + sum_{k=0}^i 0, ~unnamed0~0~false=0 + sum_{k=0}^i 0, \result=0 + sum_{k=0}^i 0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7fce6fc3=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! [2021-12-19 17:17:41,736 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)