./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loops/while_infinite_loop_4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d0b3231a-5dc4-44bc-a7b5-4a10fe86bd5b/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d0b3231a-5dc4-44bc-a7b5-4a10fe86bd5b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d0b3231a-5dc4-44bc-a7b5-4a10fe86bd5b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d0b3231a-5dc4-44bc-a7b5-4a10fe86bd5b/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loops/while_infinite_loop_4.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d0b3231a-5dc4-44bc-a7b5-4a10fe86bd5b/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d0b3231a-5dc4-44bc-a7b5-4a10fe86bd5b/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 ef9ee2b82a40720ec57dc1562759dd601b686b38 ......................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:54:26,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:54:26,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:54:26,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:54:26,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:54:26,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:54:26,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:54:26,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:54:26,929 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:54:26,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:54:26,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:54:26,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:54:26,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:54:26,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:54:26,933 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:54:26,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:54:26,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:54:26,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:54:26,944 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:54:26,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:54:26,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:54:26,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:54:26,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:54:26,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:54:26,958 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:54:26,958 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:54:26,958 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:54:26,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:54:26,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:54:26,960 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:54:26,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:54:26,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:54:26,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:54:26,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:54:26,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:54:26,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:54:26,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:54:26,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:54:26,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:54:26,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:54:26,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:54:26,967 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d0b3231a-5dc4-44bc-a7b5-4a10fe86bd5b/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-10-22 08:54:26,985 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:54:26,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:54:26,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:54:26,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:54:26,998 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:54:26,998 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 08:54:26,999 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 08:54:26,999 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 08:54:26,999 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 08:54:26,999 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 08:54:26,999 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 08:54:26,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:54:27,000 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:54:27,000 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:54:27,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:54:27,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:54:27,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:54:27,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 08:54:27,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 08:54:27,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 08:54:27,001 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:54:27,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:54:27,001 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 08:54:27,001 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:54:27,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 08:54:27,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:54:27,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:54:27,002 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 08:54:27,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:54:27,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:54:27,003 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 08:54:27,004 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 08:54:27,004 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/working_dir_d0b3231a-5dc4-44bc-a7b5-4a10fe86bd5b/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 -> ef9ee2b82a40720ec57dc1562759dd601b686b38 [2019-10-22 08:54:27,037 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:54:27,049 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:54:27,052 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:54:27,053 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:54:27,054 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:54:27,056 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d0b3231a-5dc4-44bc-a7b5-4a10fe86bd5b/bin/uautomizer/../../sv-benchmarks/c/loops/while_infinite_loop_4.c [2019-10-22 08:54:27,112 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d0b3231a-5dc4-44bc-a7b5-4a10fe86bd5b/bin/uautomizer/data/99a424fc1/d3b746f5d67046fc987013bc685f924c/FLAG3a8a3d4ab [2019-10-22 08:54:27,476 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:54:27,477 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d0b3231a-5dc4-44bc-a7b5-4a10fe86bd5b/sv-benchmarks/c/loops/while_infinite_loop_4.c [2019-10-22 08:54:27,486 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d0b3231a-5dc4-44bc-a7b5-4a10fe86bd5b/bin/uautomizer/data/99a424fc1/d3b746f5d67046fc987013bc685f924c/FLAG3a8a3d4ab [2019-10-22 08:54:27,879 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d0b3231a-5dc4-44bc-a7b5-4a10fe86bd5b/bin/uautomizer/data/99a424fc1/d3b746f5d67046fc987013bc685f924c [2019-10-22 08:54:27,882 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:54:27,883 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:54:27,884 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:54:27,884 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:54:27,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:54:27,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:54:27" (1/1) ... [2019-10-22 08:54:27,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24af76ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:27, skipping insertion in model container [2019-10-22 08:54:27,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:54:27" (1/1) ... [2019-10-22 08:54:27,898 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:54:27,913 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:54:28,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:54:28,047 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:54:28,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:54:28,141 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:54:28,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:28 WrapperNode [2019-10-22 08:54:28,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:54:28,142 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:54:28,142 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:54:28,142 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:54:28,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:28" (1/1) ... [2019-10-22 08:54:28,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:28" (1/1) ... [2019-10-22 08:54:28,173 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:54:28,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:54:28,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:54:28,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:54:28,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:28" (1/1) ... [2019-10-22 08:54:28,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:28" (1/1) ... [2019-10-22 08:54:28,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:28" (1/1) ... [2019-10-22 08:54:28,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:28" (1/1) ... [2019-10-22 08:54:28,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:28" (1/1) ... [2019-10-22 08:54:28,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:28" (1/1) ... [2019-10-22 08:54:28,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:28" (1/1) ... [2019-10-22 08:54:28,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:54:28,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:54:28,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:54:28,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:54:28,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d0b3231a-5dc4-44bc-a7b5-4a10fe86bd5b/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 [2019-10-22 08:54:28,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:54:28,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:54:28,409 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:54:28,410 INFO L284 CfgBuilder]: Removed 12 assume(true) statements. [2019-10-22 08:54:28,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:28 BoogieIcfgContainer [2019-10-22 08:54:28,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:54:28,412 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 08:54:28,412 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 08:54:28,415 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 08:54:28,416 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:54:28,416 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 08:54:27" (1/3) ... [2019-10-22 08:54:28,417 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2e9c97da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:54:28, skipping insertion in model container [2019-10-22 08:54:28,418 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:54:28,418 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:28" (2/3) ... [2019-10-22 08:54:28,418 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2e9c97da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:54:28, skipping insertion in model container [2019-10-22 08:54:28,419 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:54:28,419 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:28" (3/3) ... [2019-10-22 08:54:28,420 INFO L371 chiAutomizerObserver]: Analyzing ICFG while_infinite_loop_4.c [2019-10-22 08:54:28,466 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 08:54:28,467 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 08:54:28,467 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 08:54:28,467 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:54:28,467 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:54:28,467 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 08:54:28,467 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:54:28,467 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 08:54:28,481 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2019-10-22 08:54:28,504 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-10-22 08:54:28,504 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:54:28,504 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:54:28,511 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 08:54:28,511 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-10-22 08:54:28,511 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 08:54:28,512 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2019-10-22 08:54:28,513 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-10-22 08:54:28,513 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:54:28,513 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:54:28,513 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 08:54:28,513 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-10-22 08:54:28,521 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue ~x~0 := 0; 4#L-1true havoc main_#res; 12#L4-2true [2019-10-22 08:54:28,522 INFO L793 eck$LassoCheckResult]: Loop: 12#L4-2true assume !false; 14#L14loopEntrytrue assume false; 10#L14-2true __VERIFIER_assert_#in~cond := (if 0 == ~x~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 16#L4true assume !(0 == __VERIFIER_assert_~cond); 12#L4-2true [2019-10-22 08:54:28,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:28,528 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2019-10-22 08:54:28,536 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:28,537 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504704000] [2019-10-22 08:54:28,537 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:28,537 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:28,537 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:28,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:28,629 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:28,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:28,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1269327, now seen corresponding path program 1 times [2019-10-22 08:54:28,631 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:28,631 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322596774] [2019-10-22 08:54:28,631 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:28,632 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:28,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:28,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:28,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:28,657 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322596774] [2019-10-22 08:54:28,657 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:28,658 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:54:28,658 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142405002] [2019-10-22 08:54:28,663 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-10-22 08:54:28,668 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:28,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 08:54:28,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 08:54:28,686 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2019-10-22 08:54:28,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:28,694 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2019-10-22 08:54:28,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 08:54:28,696 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 7 transitions. [2019-10-22 08:54:28,697 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-10-22 08:54:28,701 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 6 states and 6 transitions. [2019-10-22 08:54:28,703 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-10-22 08:54:28,703 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-10-22 08:54:28,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 6 transitions. [2019-10-22 08:54:28,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:54:28,704 INFO L688 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2019-10-22 08:54:28,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 6 transitions. [2019-10-22 08:54:28,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-10-22 08:54:28,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-10-22 08:54:28,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2019-10-22 08:54:28,733 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2019-10-22 08:54:28,733 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2019-10-22 08:54:28,733 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 08:54:28,733 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 6 transitions. [2019-10-22 08:54:28,734 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-10-22 08:54:28,734 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:54:28,734 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:54:28,734 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 08:54:28,734 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-10-22 08:54:28,735 INFO L791 eck$LassoCheckResult]: Stem: 31#ULTIMATE.startENTRY ~x~0 := 0; 29#L-1 havoc main_#res; 30#L4-2 [2019-10-22 08:54:28,735 INFO L793 eck$LassoCheckResult]: Loop: 30#L4-2 assume !false; 34#L14loopEntry assume !false;~x~0 := 1; 32#L14-2 __VERIFIER_assert_#in~cond := (if 0 == ~x~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 33#L4 assume !(0 == __VERIFIER_assert_~cond); 30#L4-2 [2019-10-22 08:54:28,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:28,735 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2019-10-22 08:54:28,735 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:28,736 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595390302] [2019-10-22 08:54:28,736 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:28,736 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:28,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:28,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:28,750 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:28,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:28,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1271249, now seen corresponding path program 1 times [2019-10-22 08:54:28,752 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:28,752 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543899611] [2019-10-22 08:54:28,752 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:28,752 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:28,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:28,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:28,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:28,820 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543899611] [2019-10-22 08:54:28,821 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:28,821 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:54:28,821 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519691546] [2019-10-22 08:54:28,821 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-10-22 08:54:28,822 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:28,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:54:28,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:54:28,822 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. cyclomatic complexity: 1 Second operand 4 states. [2019-10-22 08:54:28,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:28,842 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-10-22 08:54:28,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:54:28,842 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 5 transitions. [2019-10-22 08:54:28,843 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:54:28,843 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 0 states and 0 transitions. [2019-10-22 08:54:28,843 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 08:54:28,844 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 08:54:28,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 08:54:28,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:54:28,844 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:54:28,844 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:54:28,844 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:54:28,844 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-10-22 08:54:28,844 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:54:28,845 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:54:28,845 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-10-22 08:54:28,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 08:54:28 BoogieIcfgContainer [2019-10-22 08:54:28,851 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 08:54:28,851 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:54:28,851 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:54:28,851 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:54:28,852 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:28" (3/4) ... [2019-10-22 08:54:28,863 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 08:54:28,864 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:54:28,866 INFO L168 Benchmark]: Toolchain (without parser) took 982.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 951.2 MB in the beginning and 1.1 GB in the end (delta: -125.5 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:28,867 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:54:28,868 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 951.2 MB in the beginning and 1.1 GB in the end (delta: -174.3 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:28,868 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.29 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. [2019-10-22 08:54:28,868 INFO L168 Benchmark]: Boogie Preprocessor took 23.99 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. [2019-10-22 08:54:28,869 INFO L168 Benchmark]: RCFGBuilder took 213.24 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: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:28,878 INFO L168 Benchmark]: BuchiAutomizer took 439.30 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: 34.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:28,878 INFO L168 Benchmark]: Witness Printer took 12.64 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. [2019-10-22 08:54:28,882 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 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 258.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 951.2 MB in the beginning and 1.1 GB in the end (delta: -174.3 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.29 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 23.99 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 213.24 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: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 439.30 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: 34.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. * Witness Printer took 12.64 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 Your program was decomposed into 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic). 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.3s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 0.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 6 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 11 SDtfs, 1 SDslu, 6 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...