./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/Arrays02-EquivalentConstantIndices.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version ae007674 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-crafted/Arrays02-EquivalentConstantIndices.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 4006e5bbc9a234a3363872bc2e5100c7378eec16240b7c8c65c17af0dd119109 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 09:01:11,793 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 09:01:11,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 09:01:11,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 09:01:11,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 09:01:11,837 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 09:01:11,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 09:01:11,842 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 09:01:11,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 09:01:11,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 09:01:11,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 09:01:11,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 09:01:11,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 09:01:11,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 09:01:11,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 09:01:11,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 09:01:11,856 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 09:01:11,857 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 09:01:11,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 09:01:11,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 09:01:11,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 09:01:11,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 09:01:11,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 09:01:11,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 09:01:11,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 09:01:11,870 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 09:01:11,871 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 09:01:11,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 09:01:11,872 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 09:01:11,873 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 09:01:11,873 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 09:01:11,873 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 09:01:11,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 09:01:11,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 09:01:11,876 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 09:01:11,876 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 09:01:11,876 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 09:01:11,877 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 09:01:11,877 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 09:01:11,878 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 09:01:11,878 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 09:01:11,879 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-28 09:01:11,907 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 09:01:11,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 09:01:11,908 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 09:01:11,908 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 09:01:11,909 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 09:01:11,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 09:01:11,910 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 09:01:11,910 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-28 09:01:11,910 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-28 09:01:11,910 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-28 09:01:11,911 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-28 09:01:11,911 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-28 09:01:11,911 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-28 09:01:11,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 09:01:11,911 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 09:01:11,911 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 09:01:11,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 09:01:11,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-28 09:01:11,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-28 09:01:11,912 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-28 09:01:11,912 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 09:01:11,912 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-28 09:01:11,912 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 09:01:11,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-28 09:01:11,913 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 09:01:11,913 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 09:01:11,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 09:01:11,913 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 09:01:11,914 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-28 09:01:11,914 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4006e5bbc9a234a3363872bc2e5100c7378eec16240b7c8c65c17af0dd119109 [2021-12-28 09:01:12,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 09:01:12,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 09:01:12,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 09:01:12,158 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 09:01:12,158 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 09:01:12,159 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Arrays02-EquivalentConstantIndices.c [2021-12-28 09:01:12,207 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb8273b46/2af5c5e326fa4ea09e3f3c5f0908a0b7/FLAG7997fadfd [2021-12-28 09:01:12,572 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 09:01:12,572 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Arrays02-EquivalentConstantIndices.c [2021-12-28 09:01:12,577 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb8273b46/2af5c5e326fa4ea09e3f3c5f0908a0b7/FLAG7997fadfd [2021-12-28 09:01:12,591 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb8273b46/2af5c5e326fa4ea09e3f3c5f0908a0b7 [2021-12-28 09:01:12,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 09:01:12,594 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 09:01:12,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 09:01:12,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 09:01:12,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 09:01:12,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:01:12" (1/1) ... [2021-12-28 09:01:12,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ff79e99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:01:12, skipping insertion in model container [2021-12-28 09:01:12,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:01:12" (1/1) ... [2021-12-28 09:01:12,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 09:01:12,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 09:01:12,726 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 09:01:12,728 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 09:01:12,740 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 09:01:12,751 INFO L208 MainTranslator]: Completed translation [2021-12-28 09:01:12,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:01:12 WrapperNode [2021-12-28 09:01:12,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 09:01:12,753 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 09:01:12,753 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 09:01:12,753 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 09:01:12,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:01:12" (1/1) ... [2021-12-28 09:01:12,764 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:01:12" (1/1) ... [2021-12-28 09:01:12,806 INFO L137 Inliner]: procedures = 8, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2021-12-28 09:01:12,807 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 09:01:12,807 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 09:01:12,807 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 09:01:12,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 09:01:12,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:01:12" (1/1) ... [2021-12-28 09:01:12,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:01:12" (1/1) ... [2021-12-28 09:01:12,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:01:12" (1/1) ... [2021-12-28 09:01:12,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:01:12" (1/1) ... [2021-12-28 09:01:12,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:01:12" (1/1) ... [2021-12-28 09:01:12,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:01:12" (1/1) ... [2021-12-28 09:01:12,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:01:12" (1/1) ... [2021-12-28 09:01:12,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 09:01:12,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 09:01:12,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 09:01:12,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 09:01:12,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:01:12" (1/1) ... [2021-12-28 09:01:12,842 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:01:12,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:01:12,861 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) [2021-12-28 09:01:12,883 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 [2021-12-28 09:01:12,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 09:01:12,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 09:01:12,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 09:01:12,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 09:01:12,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 09:01:12,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 09:01:12,927 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 09:01:12,928 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 09:01:12,991 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 09:01:12,994 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 09:01:12,995 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 09:01:12,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:01:12 BoogieIcfgContainer [2021-12-28 09:01:12,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 09:01:12,997 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-28 09:01:12,997 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-28 09:01:12,998 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-28 09:01:12,999 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:01:12,999 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.12 09:01:12" (1/3) ... [2021-12-28 09:01:13,000 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@769b7dd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:01:13, skipping insertion in model container [2021-12-28 09:01:13,000 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:01:13,000 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:01:12" (2/3) ... [2021-12-28 09:01:13,000 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@769b7dd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:01:13, skipping insertion in model container [2021-12-28 09:01:13,000 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:01:13,000 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:01:12" (3/3) ... [2021-12-28 09:01:13,001 INFO L388 chiAutomizerObserver]: Analyzing ICFG Arrays02-EquivalentConstantIndices.c [2021-12-28 09:01:13,028 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-28 09:01:13,028 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-28 09:01:13,028 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-28 09:01:13,029 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-28 09:01:13,029 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-28 09:01:13,029 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-28 09:01:13,029 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-28 09:01:13,029 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-28 09:01:13,038 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:01:13,049 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-28 09:01:13,049 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:01:13,049 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:01:13,053 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-28 09:01:13,053 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-28 09:01:13,053 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-28 09:01:13,053 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:01:13,054 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-28 09:01:13,054 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:01:13,054 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:01:13,055 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-28 09:01:13,055 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-28 09:01:13,059 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~mem2#1, main_#t~nondet3#1, main_#t~mem1#1, main_~#a~0#1.base, main_~#a~0#1.offset;call main_~#a~0#1.base, main_~#a~0#1.offset := #Ultimate.allocOnStack(4192);call write~int(main_#t~nondet0#1, main_~#a~0#1.base, 8 + main_~#a~0#1.offset, 4);havoc main_#t~nondet0#1; 7#L13-3true [2021-12-28 09:01:13,059 INFO L793 eck$LassoCheckResult]: Loop: 7#L13-3true call main_#t~mem1#1 := read~int(main_~#a~0#1.base, 8 + main_~#a~0#1.offset, 4); 4#L13-1true assume !!(main_#t~mem1#1 >= 0);havoc main_#t~mem1#1;call main_#t~mem2#1 := read~int(main_~#a~0#1.base, 8 + main_~#a~0#1.offset, 4);call write~int(main_#t~mem2#1 - 1, main_~#a~0#1.base, 8 + main_~#a~0#1.offset, 4);havoc main_#t~mem2#1;call write~int(main_#t~nondet3#1, main_~#a~0#1.base, 8 + main_~#a~0#1.offset, 4);havoc main_#t~nondet3#1; 7#L13-3true [2021-12-28 09:01:13,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:01:13,063 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-28 09:01:13,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:01:13,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508437413] [2021-12-28 09:01:13,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:01:13,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:01:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:01:13,169 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:01:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:01:13,197 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:01:13,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:01:13,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1190, now seen corresponding path program 1 times [2021-12-28 09:01:13,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:01:13,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404253434] [2021-12-28 09:01:13,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:01:13,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:01:13,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:01:13,222 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:01:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:01:13,233 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:01:13,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:01:13,235 INFO L85 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2021-12-28 09:01:13,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:01:13,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546548168] [2021-12-28 09:01:13,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:01:13,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:01:13,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:01:13,261 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:01:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:01:13,281 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:01:13,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.12 09:01:13 BoogieIcfgContainer [2021-12-28 09:01:13,564 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-28 09:01:13,565 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 09:01:13,565 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 09:01:13,565 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 09:01:13,565 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:01:12" (3/4) ... [2021-12-28 09:01:13,567 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-28 09:01:13,592 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-28 09:01:13,592 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 09:01:13,593 INFO L158 Benchmark]: Toolchain (without parser) took 998.13ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 35.8MB in the beginning and 34.7MB in the end (delta: 1.1MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. [2021-12-28 09:01:13,596 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 56.6MB. Free memory is still 38.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:01:13,597 INFO L158 Benchmark]: CACSL2BoogieTranslator took 155.30ms. Allocated memory is still 56.6MB. Free memory was 35.6MB in the beginning and 26.6MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-28 09:01:13,598 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.04ms. Allocated memory is still 56.6MB. Free memory was 26.6MB in the beginning and 41.1MB in the end (delta: -14.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-28 09:01:13,598 INFO L158 Benchmark]: Boogie Preprocessor took 27.98ms. Allocated memory is still 56.6MB. Free memory was 41.1MB in the beginning and 39.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:01:13,598 INFO L158 Benchmark]: RCFGBuilder took 159.79ms. Allocated memory is still 56.6MB. Free memory was 39.9MB in the beginning and 31.6MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-28 09:01:13,599 INFO L158 Benchmark]: BuchiAutomizer took 567.70ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 31.4MB in the beginning and 36.5MB in the end (delta: -5.1MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2021-12-28 09:01:13,601 INFO L158 Benchmark]: Witness Printer took 27.32ms. Allocated memory is still 71.3MB. Free memory was 36.2MB in the beginning and 34.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 09:01:13,605 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 56.6MB. Free memory is still 38.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 155.30ms. Allocated memory is still 56.6MB. Free memory was 35.6MB in the beginning and 26.6MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.04ms. Allocated memory is still 56.6MB. Free memory was 26.6MB in the beginning and 41.1MB in the end (delta: -14.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.98ms. Allocated memory is still 56.6MB. Free memory was 41.1MB in the beginning and 39.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 159.79ms. Allocated memory is still 56.6MB. Free memory was 39.9MB in the beginning and 31.6MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 567.70ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 31.4MB in the beginning and 36.5MB in the end (delta: -5.1MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. * Witness Printer took 27.32ms. Allocated memory is still 71.3MB. Free memory was 36.2MB in the beginning and 34.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.5s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.4s. 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: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 13]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@15f44f3e=0, NULL=0, NULL=0, a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@426bc5c2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@41d6b004=21237, NULL=1, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@15f0e20f=0, a=2} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 13]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L9] int a[1048]; [L11] a[2] = __VERIFIER_nondet_int() Loop: [L13] EXPR a[2] [L13] COND TRUE a[2] >= 0 [L14] EXPR a[2] [L14] a[2] = a[2] - 1 [L15] a[1+1] = __VERIFIER_nondet_int() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-28 09:01:13,654 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)