./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-acceleration/phases_2-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_891a337f-9a5a-44f8-987e-e0fcdfc8f511/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_891a337f-9a5a-44f8-987e-e0fcdfc8f511/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_891a337f-9a5a-44f8-987e-e0fcdfc8f511/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_891a337f-9a5a-44f8-987e-e0fcdfc8f511/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-acceleration/phases_2-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_891a337f-9a5a-44f8-987e-e0fcdfc8f511/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_891a337f-9a5a-44f8-987e-e0fcdfc8f511/bin/uautomizer --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 3cd199824dccc6e7aa84d2a9a82b4dda750590d9 ............................................................................................................................................................................................................................................................................... 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 0.1.24-678e011 [2019-11-20 09:58:52,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 09:58:52,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 09:58:52,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 09:58:52,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 09:58:52,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 09:58:52,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 09:58:52,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 09:58:52,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 09:58:52,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 09:58:52,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 09:58:52,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 09:58:52,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 09:58:52,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 09:58:52,960 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 09:58:52,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 09:58:52,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 09:58:52,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 09:58:52,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 09:58:52,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 09:58:52,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 09:58:52,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 09:58:52,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 09:58:52,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 09:58:52,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 09:58:52,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 09:58:52,980 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 09:58:52,982 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 09:58:52,982 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 09:58:52,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 09:58:52,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 09:58:52,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 09:58:52,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 09:58:52,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 09:58:52,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 09:58:52,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 09:58:52,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 09:58:52,988 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 09:58:52,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 09:58:52,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 09:58:52,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 09:58:52,991 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_891a337f-9a5a-44f8-987e-e0fcdfc8f511/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-20 09:58:53,031 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 09:58:53,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 09:58:53,032 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 09:58:53,033 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 09:58:53,033 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 09:58:53,033 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-20 09:58:53,033 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-20 09:58:53,034 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-20 09:58:53,034 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-20 09:58:53,034 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-20 09:58:53,034 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-20 09:58:53,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 09:58:53,035 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 09:58:53,035 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 09:58:53,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 09:58:53,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 09:58:53,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 09:58:53,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-20 09:58:53,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-20 09:58:53,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-20 09:58:53,037 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 09:58:53,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 09:58:53,037 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-20 09:58:53,038 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 09:58:53,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-20 09:58:53,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 09:58:53,040 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 09:58:53,040 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-20 09:58:53,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 09:58:53,041 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 09:58:53,041 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-20 09:58:53,042 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-20 09:58:53,042 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_891a337f-9a5a-44f8-987e-e0fcdfc8f511/bin/uautomizer 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 -> 3cd199824dccc6e7aa84d2a9a82b4dda750590d9 [2019-11-20 09:58:53,230 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 09:58:53,248 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 09:58:53,252 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 09:58:53,253 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 09:58:53,253 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 09:58:53,254 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_891a337f-9a5a-44f8-987e-e0fcdfc8f511/bin/uautomizer/../../sv-benchmarks/c/loop-acceleration/phases_2-1.c [2019-11-20 09:58:53,322 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_891a337f-9a5a-44f8-987e-e0fcdfc8f511/bin/uautomizer/data/3025ea639/00249403c4c5469192f9a3fbced1b318/FLAGa7f4e7e64 [2019-11-20 09:58:53,757 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 09:58:53,757 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_891a337f-9a5a-44f8-987e-e0fcdfc8f511/sv-benchmarks/c/loop-acceleration/phases_2-1.c [2019-11-20 09:58:53,767 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_891a337f-9a5a-44f8-987e-e0fcdfc8f511/bin/uautomizer/data/3025ea639/00249403c4c5469192f9a3fbced1b318/FLAGa7f4e7e64 [2019-11-20 09:58:54,169 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_891a337f-9a5a-44f8-987e-e0fcdfc8f511/bin/uautomizer/data/3025ea639/00249403c4c5469192f9a3fbced1b318 [2019-11-20 09:58:54,173 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 09:58:54,174 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 09:58:54,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 09:58:54,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 09:58:54,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 09:58:54,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:58:54" (1/1) ... [2019-11-20 09:58:54,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@322d68be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:54, skipping insertion in model container [2019-11-20 09:58:54,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:58:54" (1/1) ... [2019-11-20 09:58:54,197 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 09:58:54,217 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 09:58:54,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 09:58:54,441 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 09:58:54,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 09:58:54,542 INFO L192 MainTranslator]: Completed translation [2019-11-20 09:58:54,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:54 WrapperNode [2019-11-20 09:58:54,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 09:58:54,544 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 09:58:54,544 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 09:58:54,545 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 09:58:54,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:54" (1/1) ... [2019-11-20 09:58:54,560 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:54" (1/1) ... [2019-11-20 09:58:54,579 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 09:58:54,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 09:58:54,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 09:58:54,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 09:58:54,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:54" (1/1) ... [2019-11-20 09:58:54,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:54" (1/1) ... [2019-11-20 09:58:54,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:54" (1/1) ... [2019-11-20 09:58:54,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:54" (1/1) ... [2019-11-20 09:58:54,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:54" (1/1) ... [2019-11-20 09:58:54,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:54" (1/1) ... [2019-11-20 09:58:54,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:54" (1/1) ... [2019-11-20 09:58:54,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 09:58:54,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 09:58:54,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 09:58:54,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 09:58:54,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_891a337f-9a5a-44f8-987e-e0fcdfc8f511/bin/uautomizer/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 [2019-11-20 09:58:54,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 09:58:54,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 09:58:54,884 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 09:58:54,884 INFO L285 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-20 09:58:54,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:58:54 BoogieIcfgContainer [2019-11-20 09:58:54,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 09:58:54,886 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-20 09:58:54,886 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-20 09:58:54,891 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-20 09:58:54,892 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 09:58:54,893 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 09:58:54" (1/3) ... [2019-11-20 09:58:54,894 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3bd84156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 09:58:54, skipping insertion in model container [2019-11-20 09:58:54,895 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 09:58:54,895 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:54" (2/3) ... [2019-11-20 09:58:54,895 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3bd84156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 09:58:54, skipping insertion in model container [2019-11-20 09:58:54,896 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 09:58:54,896 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:58:54" (3/3) ... [2019-11-20 09:58:54,898 INFO L371 chiAutomizerObserver]: Analyzing ICFG phases_2-1.c [2019-11-20 09:58:54,967 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-20 09:58:54,967 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-20 09:58:54,967 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-20 09:58:54,969 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 09:58:54,969 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 09:58:54,969 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-20 09:58:54,969 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 09:58:54,970 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-20 09:58:54,986 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-11-20 09:58:55,013 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 09:58:55,016 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 09:58:55,017 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 09:58:55,024 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-20 09:58:55,024 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 09:58:55,025 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-20 09:58:55,025 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-11-20 09:58:55,027 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 09:58:55,027 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 09:58:55,027 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 09:58:55,028 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-20 09:58:55,028 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 09:58:55,037 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet1, main_#t~post2, main_~x~0, main_~y~0;main_~x~0 := 1;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 4#L16true assume !!(main_~y~0 % 4294967296 > 0); 7#L19-2true [2019-11-20 09:58:55,038 INFO L796 eck$LassoCheckResult]: Loop: 7#L19-2true assume !!(main_~x~0 % 4294967296 < main_~y~0 % 4294967296); 11#L19true 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; 7#L19-2true [2019-11-20 09:58:55,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:58:55,047 INFO L82 PathProgramCache]: Analyzing trace with hash 998, now seen corresponding path program 1 times [2019-11-20 09:58:55,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:58:55,058 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001066330] [2019-11-20 09:58:55,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:58:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 09:58:55,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 09:58:55,147 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 09:58:55,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:58:55,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1444, now seen corresponding path program 1 times [2019-11-20 09:58:55,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:58:55,149 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903969068] [2019-11-20 09:58:55,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:58:55,156 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 09:58:55,158 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1324821046] [2019-11-20 09:58:55,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_891a337f-9a5a-44f8-987e-e0fcdfc8f511/bin/uautomizer/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 [2019-11-20 09:58:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2019-11-20 09:58:55,237 WARN L168 FreeRefinementEngine]: Strategy CAMEL was unsuccessful and could not determine trace feasibility [2019-11-20 09:58:55,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:58:55,239 INFO L82 PathProgramCache]: Analyzing trace with hash 959561, now seen corresponding path program 1 times [2019-11-20 09:58:55,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:58:55,239 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510148152] [2019-11-20 09:58:55,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:58:55,253 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 09:58:55,263 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1489541410] [2019-11-20 09:58:55,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_891a337f-9a5a-44f8-987e-e0fcdfc8f511/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-11-20 09:58:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:58:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 09:58:55,325 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 09:58:55,460 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2019-11-20 09:58:55,599 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2019-11-20 09:58:55,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 09:58:55 BoogieIcfgContainer [2019-11-20 09:58:55,648 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-20 09:58:55,648 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 09:58:55,649 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 09:58:55,649 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 09:58:55,649 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:58:54" (3/4) ... [2019-11-20 09:58:55,653 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-11-20 09:58:55,695 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_891a337f-9a5a-44f8-987e-e0fcdfc8f511/bin/uautomizer/witness.graphml [2019-11-20 09:58:55,695 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 09:58:55,697 INFO L168 Benchmark]: Toolchain (without parser) took 1523.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 950.2 MB in the beginning and 1.1 GB in the end (delta: -118.9 MB). Peak memory consumption was 11.7 MB. Max. memory is 11.5 GB. [2019-11-20 09:58:55,698 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 09:58:55,698 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 950.2 MB in the beginning and 1.1 GB in the end (delta: -171.6 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-20 09:58:55,699 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.44 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 09:58:55,699 INFO L168 Benchmark]: Boogie Preprocessor took 18.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 09:58:55,700 INFO L168 Benchmark]: RCFGBuilder took 287.71 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: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 11.5 GB. [2019-11-20 09:58:55,701 INFO L168 Benchmark]: BuchiAutomizer took 761.65 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: 36.3 MB). Peak memory consumption was 36.3 MB. Max. memory is 11.5 GB. [2019-11-20 09:58:55,701 INFO L168 Benchmark]: Witness Printer took 47.13 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 09:58:55,705 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 363.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 950.2 MB in the beginning and 1.1 GB in the end (delta: -171.6 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 35.44 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 287.71 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: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 761.65 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: 36.3 MB). Peak memory consumption was 36.3 MB. Max. memory is 11.5 GB. * Witness Printer took 47.13 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. 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 0.6s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.6s. 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: 18]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {\result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@614f9e3e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@103debea=0, x=1, y=2} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 18]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L13] unsigned int x = 1; [L14] unsigned int y = __VERIFIER_nondet_uint(); [L16] COND FALSE !(!(y > 0)) Loop: [L18] COND TRUE x < y [L19] COND TRUE x < y / x [L20] x *= x End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...