./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 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d3f67bfa-58ad-43ba-9f54-bdc8c5b67aea/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d3f67bfa-58ad-43ba-9f54-bdc8c5b67aea/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d3f67bfa-58ad-43ba-9f54-bdc8c5b67aea/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d3f67bfa-58ad-43ba-9f54-bdc8c5b67aea/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loops/while_infinite_loop_4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d3f67bfa-58ad-43ba-9f54-bdc8c5b67aea/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d3f67bfa-58ad-43ba-9f54-bdc8c5b67aea/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 0.1.24-6b5699a [2019-11-25 08:54:55,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:54:55,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:54:55,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:54:55,506 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:54:55,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:54:55,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:54:55,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:54:55,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:54:55,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:54:55,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:54:55,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:54:55,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:54:55,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:54:55,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:54:55,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:54:55,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:54:55,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:54:55,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:54:55,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:54:55,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:54:55,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:54:55,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:54:55,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:54:55,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:54:55,547 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:54:55,547 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:54:55,548 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:54:55,548 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:54:55,549 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:54:55,549 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:54:55,550 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:54:55,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:54:55,551 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:54:55,552 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:54:55,552 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:54:55,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:54:55,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:54:55,553 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:54:55,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:54:55,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:54:55,555 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d3f67bfa-58ad-43ba-9f54-bdc8c5b67aea/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-25 08:54:55,569 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:54:55,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:54:55,571 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:54:55,571 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:54:55,571 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:54:55,571 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-25 08:54:55,571 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-25 08:54:55,572 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-25 08:54:55,572 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-25 08:54:55,572 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-25 08:54:55,572 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-25 08:54:55,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:54:55,572 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:54:55,573 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:54:55,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:54:55,573 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:54:55,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:54:55,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-25 08:54:55,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-25 08:54:55,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-25 08:54:55,574 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:54:55,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:54:55,574 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-25 08:54:55,574 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:54:55,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-25 08:54:55,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:54:55,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:54:55,575 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-25 08:54:55,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:54:55,576 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:54:55,576 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-25 08:54:55,576 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-25 08:54:55,577 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_d3f67bfa-58ad-43ba-9f54-bdc8c5b67aea/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 [2019-11-25 08:54:55,713 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:54:55,722 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:54:55,727 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:54:55,728 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:54:55,728 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:54:55,729 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d3f67bfa-58ad-43ba-9f54-bdc8c5b67aea/bin/uautomizer/../../sv-benchmarks/c/loops/while_infinite_loop_4.c [2019-11-25 08:54:55,795 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d3f67bfa-58ad-43ba-9f54-bdc8c5b67aea/bin/uautomizer/data/c9ca553a0/9c5f90d1daec4c41bba0a0ad1ca59bab/FLAG0afcc58b8 [2019-11-25 08:54:56,151 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:54:56,153 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d3f67bfa-58ad-43ba-9f54-bdc8c5b67aea/sv-benchmarks/c/loops/while_infinite_loop_4.c [2019-11-25 08:54:56,158 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d3f67bfa-58ad-43ba-9f54-bdc8c5b67aea/bin/uautomizer/data/c9ca553a0/9c5f90d1daec4c41bba0a0ad1ca59bab/FLAG0afcc58b8 [2019-11-25 08:54:56,521 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d3f67bfa-58ad-43ba-9f54-bdc8c5b67aea/bin/uautomizer/data/c9ca553a0/9c5f90d1daec4c41bba0a0ad1ca59bab [2019-11-25 08:54:56,523 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:54:56,524 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:54:56,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:54:56,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:54:56,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:54:56,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:54:56" (1/1) ... [2019-11-25 08:54:56,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60892c4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:56, skipping insertion in model container [2019-11-25 08:54:56,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:54:56" (1/1) ... [2019-11-25 08:54:56,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:54:56,554 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:54:56,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:54:56,719 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:54:56,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:54:56,853 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:54:56,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:56 WrapperNode [2019-11-25 08:54:56,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:54:56,855 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:54:56,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:54:56,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:54:56,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:56" (1/1) ... [2019-11-25 08:54:56,869 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:56" (1/1) ... [2019-11-25 08:54:56,888 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:54:56,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:54:56,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:54:56,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:54:56,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:56" (1/1) ... [2019-11-25 08:54:56,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:56" (1/1) ... [2019-11-25 08:54:56,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:56" (1/1) ... [2019-11-25 08:54:56,896 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:56" (1/1) ... [2019-11-25 08:54:56,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:56" (1/1) ... [2019-11-25 08:54:56,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:56" (1/1) ... [2019-11-25 08:54:56,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:56" (1/1) ... [2019-11-25 08:54:56,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:54:56,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:54:56,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:54:56,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:54:56,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d3f67bfa-58ad-43ba-9f54-bdc8c5b67aea/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 [2019-11-25 08:54:56,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:54:56,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:54:57,087 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:54:57,088 INFO L284 CfgBuilder]: Removed 12 assume(true) statements. [2019-11-25 08:54:57,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:54:57 BoogieIcfgContainer [2019-11-25 08:54:57,089 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:54:57,090 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-25 08:54:57,090 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-25 08:54:57,093 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-25 08:54:57,094 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:54:57,094 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 08:54:56" (1/3) ... [2019-11-25 08:54:57,095 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6f304ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:54:57, skipping insertion in model container [2019-11-25 08:54:57,095 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:54:57,095 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:56" (2/3) ... [2019-11-25 08:54:57,095 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6f304ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:54:57, skipping insertion in model container [2019-11-25 08:54:57,096 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:54:57,096 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:54:57" (3/3) ... [2019-11-25 08:54:57,097 INFO L371 chiAutomizerObserver]: Analyzing ICFG while_infinite_loop_4.c [2019-11-25 08:54:57,139 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-25 08:54:57,139 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-25 08:54:57,139 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-25 08:54:57,139 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:54:57,139 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:54:57,140 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-25 08:54:57,140 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:54:57,140 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-25 08:54:57,153 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2019-11-25 08:54:57,172 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-25 08:54:57,172 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:54:57,172 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:54:57,178 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-25 08:54:57,179 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:54:57,179 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-25 08:54:57,179 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2019-11-25 08:54:57,180 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-25 08:54:57,180 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:54:57,181 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:54:57,181 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-25 08:54:57,181 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:54:57,187 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue ~x~0 := 0; 4#L-1true havoc main_#res; 12#L4-2true [2019-11-25 08:54:57,187 INFO L796 eck$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 [2019-11-25 08:54:57,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:57,192 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2019-11-25 08:54:57,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:54:57,199 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325021834] [2019-11-25 08:54:57,199 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:54:57,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:57,277 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:54:57,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:57,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1269327, now seen corresponding path program 1 times [2019-11-25 08:54:57,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:54:57,279 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089135787] [2019-11-25 08:54:57,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:54:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:57,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:57,301 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089135787] [2019-11-25 08:54:57,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:54:57,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:54:57,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625616013] [2019-11-25 08:54:57,308 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-25 08:54:57,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:54:57,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:54:57,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:54:57,325 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2019-11-25 08:54:57,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:54:57,331 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2019-11-25 08:54:57,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:54:57,333 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 7 transitions. [2019-11-25 08:54:57,334 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-25 08:54:57,337 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 6 states and 6 transitions. [2019-11-25 08:54:57,338 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-25 08:54:57,338 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-11-25 08:54:57,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 6 transitions. [2019-11-25 08:54:57,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:54:57,339 INFO L688 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2019-11-25 08:54:57,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 6 transitions. [2019-11-25 08:54:57,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-11-25 08:54:57,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-25 08:54:57,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2019-11-25 08:54:57,364 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2019-11-25 08:54:57,364 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2019-11-25 08:54:57,365 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-25 08:54:57,365 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 6 transitions. [2019-11-25 08:54:57,365 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-25 08:54:57,365 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:54:57,365 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:54:57,366 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-25 08:54:57,366 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:54:57,366 INFO L794 eck$LassoCheckResult]: Stem: 31#ULTIMATE.startENTRY ~x~0 := 0; 29#L-1 havoc main_#res; 30#L4-2 [2019-11-25 08:54:57,366 INFO L796 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 [2019-11-25 08:54:57,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:57,367 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2019-11-25 08:54:57,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:54:57,367 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265756013] [2019-11-25 08:54:57,367 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:54:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:57,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:57,372 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:54:57,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:57,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1271249, now seen corresponding path program 1 times [2019-11-25 08:54:57,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:54:57,374 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076694000] [2019-11-25 08:54:57,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:54:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:57,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:57,450 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076694000] [2019-11-25 08:54:57,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:54:57,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:54:57,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576021000] [2019-11-25 08:54:57,451 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-25 08:54:57,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:54:57,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:54:57,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:54:57,452 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. cyclomatic complexity: 1 Second operand 4 states. [2019-11-25 08:54:57,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:54:57,494 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-11-25 08:54:57,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:54:57,495 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 5 transitions. [2019-11-25 08:54:57,495 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:54:57,495 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 0 states and 0 transitions. [2019-11-25 08:54:57,495 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-25 08:54:57,496 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-25 08:54:57,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-25 08:54:57,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:54:57,496 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:54:57,496 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:54:57,496 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:54:57,496 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-25 08:54:57,496 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:54:57,497 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:54:57,497 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-25 08:54:57,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 08:54:57 BoogieIcfgContainer [2019-11-25 08:54:57,505 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-25 08:54:57,505 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:54:57,505 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:54:57,505 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:54:57,506 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:54:57" (3/4) ... [2019-11-25 08:54:57,510 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:54:57,510 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:54:57,512 INFO L168 Benchmark]: Toolchain (without parser) took 987.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -134.8 MB). Peak memory consumption was 5.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:57,513 INFO L168 Benchmark]: CDTParser took 0.24 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. [2019-11-25 08:54:57,529 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -178.9 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:57,530 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.39 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. [2019-11-25 08:54:57,530 INFO L168 Benchmark]: Boogie Preprocessor took 22.37 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. [2019-11-25 08:54:57,531 INFO L168 Benchmark]: RCFGBuilder took 177.63 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: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:57,532 INFO L168 Benchmark]: BuchiAutomizer took 415.03 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: 28.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:57,532 INFO L168 Benchmark]: Witness Printer took 5.35 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. [2019-11-25 08:54:57,535 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 329.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -178.9 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.39 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 22.37 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 177.63 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: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 415.03 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: 28.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 11.5 GB. * Witness Printer took 5.35 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...