./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loop-acceleration/phases_2-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/loop-acceleration/phases_2-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-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 32bit --witnessprinter.graph.data.programhash 85d8c0857ba90e2936a809e6bce9dcb97e8e7e59 ......................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 19:12:30,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 19:12:30,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 19:12:30,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 19:12:30,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 19:12:30,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 19:12:30,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 19:12:30,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 19:12:30,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 19:12:30,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 19:12:30,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 19:12:30,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 19:12:30,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 19:12:30,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 19:12:30,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 19:12:30,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 19:12:30,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 19:12:30,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 19:12:30,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 19:12:30,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 19:12:30,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 19:12:30,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 19:12:30,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 19:12:30,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 19:12:30,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 19:12:30,971 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 19:12:30,971 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 19:12:30,972 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 19:12:30,973 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 19:12:30,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 19:12:30,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 19:12:30,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 19:12:30,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 19:12:30,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 19:12:30,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 19:12:30,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 19:12:30,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 19:12:30,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 19:12:30,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 19:12:30,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 19:12:30,981 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 19:12:30,982 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-19 19:12:31,008 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 19:12:31,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 19:12:31,010 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 19:12:31,010 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 19:12:31,011 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 19:12:31,011 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-19 19:12:31,011 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-19 19:12:31,011 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-19 19:12:31,011 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-19 19:12:31,012 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-19 19:12:31,012 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-19 19:12:31,012 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 19:12:31,012 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 19:12:31,012 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 19:12:31,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 19:12:31,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 19:12:31,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 19:12:31,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-19 19:12:31,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-19 19:12:31,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-19 19:12:31,014 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 19:12:31,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 19:12:31,014 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-19 19:12:31,015 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 19:12:31,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-19 19:12:31,015 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 19:12:31,015 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 19:12:31,016 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-19 19:12:31,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 19:12:31,016 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 19:12:31,016 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 19:12:31,016 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-19 19:12:31,018 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-19 19:12:31,018 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85d8c0857ba90e2936a809e6bce9dcb97e8e7e59 [2020-10-19 19:12:31,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 19:12:31,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 19:12:31,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 19:12:31,364 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 19:12:31,364 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 19:12:31,365 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/phases_2-2.c [2020-10-19 19:12:31,436 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e95678d85/b65390b45002489baf1d006af2ba8dfb/FLAG33fa969ec [2020-10-19 19:12:31,913 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 19:12:31,913 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/phases_2-2.c [2020-10-19 19:12:31,919 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e95678d85/b65390b45002489baf1d006af2ba8dfb/FLAG33fa969ec [2020-10-19 19:12:32,283 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e95678d85/b65390b45002489baf1d006af2ba8dfb [2020-10-19 19:12:32,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 19:12:32,293 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 19:12:32,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 19:12:32,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 19:12:32,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 19:12:32,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 07:12:32" (1/1) ... [2020-10-19 19:12:32,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dfb4c10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:12:32, skipping insertion in model container [2020-10-19 19:12:32,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 07:12:32" (1/1) ... [2020-10-19 19:12:32,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 19:12:32,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 19:12:32,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 19:12:32,528 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 19:12:32,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 19:12:32,564 INFO L208 MainTranslator]: Completed translation [2020-10-19 19:12:32,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:12:32 WrapperNode [2020-10-19 19:12:32,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 19:12:32,565 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 19:12:32,566 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 19:12:32,566 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 19:12:32,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:12:32" (1/1) ... [2020-10-19 19:12:32,640 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:12:32" (1/1) ... [2020-10-19 19:12:32,657 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 19:12:32,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 19:12:32,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 19:12:32,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 19:12:32,668 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:12:32" (1/1) ... [2020-10-19 19:12:32,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:12:32" (1/1) ... [2020-10-19 19:12:32,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:12:32" (1/1) ... [2020-10-19 19:12:32,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:12:32" (1/1) ... [2020-10-19 19:12:32,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:12:32" (1/1) ... [2020-10-19 19:12:32,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:12:32" (1/1) ... [2020-10-19 19:12:32,679 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:12:32" (1/1) ... [2020-10-19 19:12:32,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 19:12:32,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 19:12:32,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 19:12:32,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 19:12:32,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:12:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:12:32,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 19:12:32,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 19:12:32,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 19:12:32,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 19:12:33,024 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 19:12:33,025 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-19 19:12:33,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 07:12:33 BoogieIcfgContainer [2020-10-19 19:12:33,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 19:12:33,029 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-19 19:12:33,029 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-19 19:12:33,034 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-19 19:12:33,036 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 19:12:33,037 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.10 07:12:32" (1/3) ... [2020-10-19 19:12:33,038 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5aeb4416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 07:12:33, skipping insertion in model container [2020-10-19 19:12:33,039 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 19:12:33,039 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:12:32" (2/3) ... [2020-10-19 19:12:33,040 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5aeb4416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 07:12:33, skipping insertion in model container [2020-10-19 19:12:33,040 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 19:12:33,040 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 07:12:33" (3/3) ... [2020-10-19 19:12:33,042 INFO L373 chiAutomizerObserver]: Analyzing ICFG phases_2-2.c [2020-10-19 19:12:33,115 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-19 19:12:33,116 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-19 19:12:33,116 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-19 19:12:33,116 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 19:12:33,116 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 19:12:33,116 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-19 19:12:33,116 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 19:12:33,117 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-19 19:12:33,129 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2020-10-19 19:12:33,150 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 19:12:33,150 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 19:12:33,150 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 19:12:33,156 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-19 19:12:33,157 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 19:12:33,157 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-19 19:12:33,157 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2020-10-19 19:12:33,158 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 19:12:33,159 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 19:12:33,159 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 19:12:33,159 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-19 19:12:33,159 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 19:12:33,166 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(13);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 3#L-1true havoc main_#res;havoc main_#t~nondet7, main_#t~post8, main_~x~0, main_~y~0;main_~x~0 := 1;main_~y~0 := main_#t~nondet7;havoc main_#t~nondet7; 4#L21true assume !!(main_~y~0 % 4294967296 > 0); 8#L24-2true [2020-10-19 19:12:33,166 INFO L796 eck$LassoCheckResult]: Loop: 8#L24-2true assume !!(main_~x~0 % 4294967296 < main_~y~0 % 4294967296); 11#L24true assume main_~x~0 % 4294967296 < (if main_~y~0 % 4294967296 < 0 && 0 != main_~y~0 % 4294967296 % (main_~x~0 % 4294967296) then (if main_~x~0 % 4294967296 < 0 then main_~y~0 % 4294967296 / (main_~x~0 % 4294967296) - 1 else 1 + main_~y~0 % 4294967296 / (main_~x~0 % 4294967296)) else main_~y~0 % 4294967296 / (main_~x~0 % 4294967296)) % 4294967296;main_~x~0 := main_~x~0 * main_~x~0; 8#L24-2true [2020-10-19 19:12:33,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:12:33,172 INFO L82 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2020-10-19 19:12:33,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:12:33,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516200260] [2020-10-19 19:12:33,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:12:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:12:33,299 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:12:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:12:33,321 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:12:33,347 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:12:33,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:12:33,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1476, now seen corresponding path program 1 times [2020-10-19 19:12:33,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:12:33,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294003574] [2020-10-19 19:12:33,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:12:33,358 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 19:12:33,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1754642468] [2020-10-19 19:12:33,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 19:12:33,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:12:33,431 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:12:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:12:33,443 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:12:33,451 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:12:33,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:12:33,454 INFO L82 PathProgramCache]: Analyzing trace with hash 28695975, now seen corresponding path program 1 times [2020-10-19 19:12:33,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:12:33,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663636195] [2020-10-19 19:12:33,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:12:33,469 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 19:12:33,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804759852] [2020-10-19 19:12:33,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 19:12:33,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:12:33,542 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:12:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:12:33,562 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:12:33,572 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:12:33,907 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-10-19 19:12:34,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.10 07:12:34 BoogieIcfgContainer [2020-10-19 19:12:34,058 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-19 19:12:34,060 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 19:12:34,061 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 19:12:34,061 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 19:12:34,062 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 07:12:33" (3/4) ... [2020-10-19 19:12:34,071 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-10-19 19:12:34,133 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 19:12:34,133 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 19:12:34,135 INFO L168 Benchmark]: Toolchain (without parser) took 1847.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 958.6 MB in the beginning and 1.0 GB in the end (delta: -80.4 MB). Peak memory consumption was 58.6 MB. Max. memory is 11.5 GB. [2020-10-19 19:12:34,136 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 19:12:34,136 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.42 ms. Allocated memory is still 1.0 GB. Free memory was 958.6 MB in the beginning and 947.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 19:12:34,137 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 947.8 MB in the beginning and 1.1 GB in the end (delta: -187.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2020-10-19 19:12:34,138 INFO L168 Benchmark]: Boogie Preprocessor took 23.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-10-19 19:12:34,139 INFO L168 Benchmark]: RCFGBuilder took 346.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2020-10-19 19:12:34,140 INFO L168 Benchmark]: BuchiAutomizer took 1029.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 63.2 MB). Peak memory consumption was 63.2 MB. Max. memory is 11.5 GB. [2020-10-19 19:12:34,140 INFO L168 Benchmark]: Witness Printer took 73.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-10-19 19:12:34,144 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 271.42 ms. Allocated memory is still 1.0 GB. Free memory was 958.6 MB in the beginning and 947.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 91.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 947.8 MB in the beginning and 1.1 GB in the end (delta: -187.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 346.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1029.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 63.2 MB). Peak memory consumption was 63.2 MB. Max. memory is 11.5 GB. * Witness Printer took 73.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.9s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: No data available LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 23]: 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 {NULL=0, NULL=0, NULL=0, NULL=3, NULL=0, \result=0, NULL=4, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1f3448c5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@35455da1=0, NULL=0, x=1, y=4294967298, NULL=5} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 23]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L18] unsigned int x = 1; [L19] unsigned int y = __VERIFIER_nondet_uint(); [L21] COND FALSE !(!(y > 0)) Loop: [L23] COND TRUE x < y [L24] COND TRUE x < y / x [L25] x *= x End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...