./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-15/array20_alloca_false-termination.c.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_bd087719-b45f-4cd9-9c5d-1dad68faecb0/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_bd087719-b45f-4cd9-9c5d-1dad68faecb0/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_bd087719-b45f-4cd9-9c5d-1dad68faecb0/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_bd087719-b45f-4cd9-9c5d-1dad68faecb0/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-15/array20_alloca_false-termination.c.i -s /tmp/vcloud-vcloud-master/worker/working_dir_bd087719-b45f-4cd9-9c5d-1dad68faecb0/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_bd087719-b45f-4cd9-9c5d-1dad68faecb0/bin-2019/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 64bit --witnessprinter.graph.data.programhash 15cc26ae0dc42c909592f114b7003fa240a2d07d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.23-635dfa2 [2018-12-02 17:37:07,876 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 17:37:07,877 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 17:37:07,885 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 17:37:07,886 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 17:37:07,886 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 17:37:07,887 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 17:37:07,888 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 17:37:07,889 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 17:37:07,890 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 17:37:07,890 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 17:37:07,890 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 17:37:07,891 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 17:37:07,891 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 17:37:07,892 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 17:37:07,893 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 17:37:07,893 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 17:37:07,894 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 17:37:07,896 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 17:37:07,897 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 17:37:07,898 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 17:37:07,898 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 17:37:07,900 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 17:37:07,900 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 17:37:07,900 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 17:37:07,901 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 17:37:07,902 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 17:37:07,902 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 17:37:07,903 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 17:37:07,904 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 17:37:07,904 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 17:37:07,904 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 17:37:07,904 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 17:37:07,904 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 17:37:07,905 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 17:37:07,905 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 17:37:07,906 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_bd087719-b45f-4cd9-9c5d-1dad68faecb0/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-12-02 17:37:07,917 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 17:37:07,917 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 17:37:07,918 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 17:37:07,918 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 17:37:07,918 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 17:37:07,918 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-02 17:37:07,919 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-02 17:37:07,919 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-02 17:37:07,919 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-02 17:37:07,919 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-02 17:37:07,919 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-02 17:37:07,919 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 17:37:07,919 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-02 17:37:07,919 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 17:37:07,919 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 17:37:07,920 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-02 17:37:07,920 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-02 17:37:07,920 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-02 17:37:07,920 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 17:37:07,920 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-02 17:37:07,920 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 17:37:07,920 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-02 17:37:07,920 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 17:37:07,921 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 17:37:07,921 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-02 17:37:07,921 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 17:37:07,921 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-02 17:37:07,921 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-02 17:37:07,921 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-02 17:37:07,921 INFO L133 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_bd087719-b45f-4cd9-9c5d-1dad68faecb0/bin-2019/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 15cc26ae0dc42c909592f114b7003fa240a2d07d [2018-12-02 17:37:07,945 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 17:37:07,954 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 17:37:07,957 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 17:37:07,958 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 17:37:07,958 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 17:37:07,959 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_bd087719-b45f-4cd9-9c5d-1dad68faecb0/bin-2019/uautomizer/../../sv-benchmarks/c/termination-15/array20_alloca_false-termination.c.i [2018-12-02 17:37:07,995 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bd087719-b45f-4cd9-9c5d-1dad68faecb0/bin-2019/uautomizer/data/c361d38aa/8faf5b5a5744476eb930a6195f6d0e3c/FLAG7bd652eb3 [2018-12-02 17:37:08,406 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 17:37:08,406 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_bd087719-b45f-4cd9-9c5d-1dad68faecb0/sv-benchmarks/c/termination-15/array20_alloca_false-termination.c.i [2018-12-02 17:37:08,412 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bd087719-b45f-4cd9-9c5d-1dad68faecb0/bin-2019/uautomizer/data/c361d38aa/8faf5b5a5744476eb930a6195f6d0e3c/FLAG7bd652eb3 [2018-12-02 17:37:08,420 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_bd087719-b45f-4cd9-9c5d-1dad68faecb0/bin-2019/uautomizer/data/c361d38aa/8faf5b5a5744476eb930a6195f6d0e3c [2018-12-02 17:37:08,422 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 17:37:08,423 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 17:37:08,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 17:37:08,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 17:37:08,426 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 17:37:08,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:37:08" (1/1) ... [2018-12-02 17:37:08,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b0ff27c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:37:08, skipping insertion in model container [2018-12-02 17:37:08,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:37:08" (1/1) ... [2018-12-02 17:37:08,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 17:37:08,458 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 17:37:08,626 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 17:37:08,633 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 17:37:08,697 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 17:37:08,725 INFO L195 MainTranslator]: Completed translation [2018-12-02 17:37:08,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:37:08 WrapperNode [2018-12-02 17:37:08,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 17:37:08,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 17:37:08,726 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 17:37:08,726 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 17:37:08,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:37:08" (1/1) ... [2018-12-02 17:37:08,738 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:37:08" (1/1) ... [2018-12-02 17:37:08,749 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 17:37:08,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 17:37:08,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 17:37:08,749 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 17:37:08,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:37:08" (1/1) ... [2018-12-02 17:37:08,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:37:08" (1/1) ... [2018-12-02 17:37:08,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:37:08" (1/1) ... [2018-12-02 17:37:08,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:37:08" (1/1) ... [2018-12-02 17:37:08,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:37:08" (1/1) ... [2018-12-02 17:37:08,760 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:37:08" (1/1) ... [2018-12-02 17:37:08,761 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:37:08" (1/1) ... [2018-12-02 17:37:08,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 17:37:08,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 17:37:08,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 17:37:08,762 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 17:37:08,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:37:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bd087719-b45f-4cd9-9c5d-1dad68faecb0/bin-2019/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 [2018-12-02 17:37:08,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 17:37:08,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-02 17:37:08,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-02 17:37:08,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 17:37:08,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 17:37:08,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 17:37:08,888 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 17:37:08,888 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-02 17:37:08,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:37:08 BoogieIcfgContainer [2018-12-02 17:37:08,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 17:37:08,889 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-02 17:37:08,889 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-02 17:37:08,891 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-02 17:37:08,891 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-02 17:37:08,891 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 02.12 05:37:08" (1/3) ... [2018-12-02 17:37:08,892 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6c44c590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.12 05:37:08, skipping insertion in model container [2018-12-02 17:37:08,892 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-02 17:37:08,892 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:37:08" (2/3) ... [2018-12-02 17:37:08,892 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6c44c590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.12 05:37:08, skipping insertion in model container [2018-12-02 17:37:08,892 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-02 17:37:08,892 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:37:08" (3/3) ... [2018-12-02 17:37:08,893 INFO L375 chiAutomizerObserver]: Analyzing ICFG array20_alloca_false-termination.c.i [2018-12-02 17:37:08,923 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 17:37:08,923 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-02 17:37:08,924 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-02 17:37:08,924 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-02 17:37:08,924 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 17:37:08,924 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 17:37:08,924 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-02 17:37:08,924 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 17:37:08,924 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-02 17:37:08,932 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2018-12-02 17:37:08,944 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2018-12-02 17:37:08,944 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 17:37:08,944 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 17:37:08,948 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-12-02 17:37:08,948 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-02 17:37:08,948 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-02 17:37:08,948 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2018-12-02 17:37:08,949 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2018-12-02 17:37:08,949 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 17:37:08,949 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 17:37:08,949 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-12-02 17:37:08,950 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-02 17:37:08,954 INFO L794 eck$LassoCheckResult]: Stem: 9#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 7#L-1true havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 15#L367true assume !(main_~length~0 < 1); 4#L367-2true call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.alloc(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 12#L369true assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 16#L370-3true [2018-12-02 17:37:08,954 INFO L796 eck$LassoCheckResult]: Loop: 16#L370-3true assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 8#L372true assume main_#t~mem209 < 1;havoc main_#t~mem209;call write~int(1, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 14#L370-2true main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 16#L370-3true [2018-12-02 17:37:08,958 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:37:08,958 INFO L82 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2018-12-02 17:37:08,959 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 17:37:08,959 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 17:37:08,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:37:08,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:37:08,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:37:09,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 17:37:09,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 17:37:09,026 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:37:09,026 INFO L82 PathProgramCache]: Analyzing trace with hash 51737, now seen corresponding path program 1 times [2018-12-02 17:37:09,026 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 17:37:09,026 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 17:37:09,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:37:09,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:37:09,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:37:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 17:37:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 17:37:09,043 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:37:09,043 INFO L82 PathProgramCache]: Analyzing trace with hash 176707665, now seen corresponding path program 1 times [2018-12-02 17:37:09,043 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 17:37:09,043 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 17:37:09,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:37:09,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:37:09,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:37:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 17:37:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 17:37:09,205 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 17:37:09,206 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 17:37:09,206 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 17:37:09,206 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 17:37:09,206 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-02 17:37:09,206 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 17:37:09,206 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 17:37:09,206 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 17:37:09,207 INFO L131 ssoRankerPreferences]: Filename of dumped script: array20_alloca_false-termination.c.i_Iteration1_Lasso [2018-12-02 17:37:09,207 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 17:37:09,207 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 17:37:09,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 17:37:09,228 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 17:37:09,230 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 17:37:09,231 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 17:37:09,234 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 17:37:09,236 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 17:37:09,238 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 17:37:09,306 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 17:37:09,308 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 17:37:09,310 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 17:37:09,413 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 17:37:09,416 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-02 17:37:09,418 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 17:37:09,419 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 17:37:09,419 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 17:37:09,419 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 17:37:09,419 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 17:37:09,419 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 17:37:09,421 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 17:37:09,421 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 17:37:09,423 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 17:37:09,423 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 17:37:09,423 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 17:37:09,423 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 17:37:09,423 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 17:37:09,424 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 17:37:09,424 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 17:37:09,424 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 17:37:09,424 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 17:37:09,424 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 17:37:09,425 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 17:37:09,425 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 17:37:09,425 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 17:37:09,425 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 17:37:09,425 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 17:37:09,425 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 17:37:09,426 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 17:37:09,426 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 17:37:09,426 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 17:37:09,427 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 17:37:09,427 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 17:37:09,427 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 17:37:09,427 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 17:37:09,427 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 17:37:09,429 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-02 17:37:09,429 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-02 17:37:09,431 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 17:37:09,432 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 17:37:09,432 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 17:37:09,432 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 17:37:09,432 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 17:37:09,433 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 17:37:09,433 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 17:37:09,433 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 17:37:09,433 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 17:37:09,433 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 17:37:09,434 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 17:37:09,434 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 17:37:09,434 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 17:37:09,434 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 17:37:09,434 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 17:37:09,435 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 17:37:09,435 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 17:37:09,435 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 17:37:09,436 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 17:37:09,436 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 17:37:09,436 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 17:37:09,436 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 17:37:09,437 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 17:37:09,437 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 17:37:09,439 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-02 17:37:09,439 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-02 17:37:09,469 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-02 17:37:09,488 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2018-12-02 17:37:09,488 INFO L444 ModelExtractionUtils]: 16 out of 22 variables were initially zero. Simplification set additionally 3 variables to zero. [2018-12-02 17:37:09,490 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-02 17:37:09,491 INFO L440 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2018-12-02 17:37:09,491 INFO L518 LassoAnalysis]: Proved termination. [2018-12-02 17:37:09,491 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~length~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~length~0 Supporting invariants [] [2018-12-02 17:37:09,497 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2018-12-02 17:37:09,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:37:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:37:09,522 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 17:37:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:37:09,531 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 17:37:09,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 17:37:09,553 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-02 17:37:09,554 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states. Second operand 3 states. [2018-12-02 17:37:09,601 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states.. Second operand 3 states. Result 32 states and 44 transitions. Complement of second has 7 states. [2018-12-02 17:37:09,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-02 17:37:09,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-02 17:37:09,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 29 transitions. [2018-12-02 17:37:09,603 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 5 letters. Loop has 3 letters. [2018-12-02 17:37:09,604 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 17:37:09,604 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 8 letters. Loop has 3 letters. [2018-12-02 17:37:09,604 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 17:37:09,604 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 5 letters. Loop has 6 letters. [2018-12-02 17:37:09,605 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 17:37:09,605 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 44 transitions. [2018-12-02 17:37:09,607 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-12-02 17:37:09,609 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 11 states and 15 transitions. [2018-12-02 17:37:09,609 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-12-02 17:37:09,610 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-12-02 17:37:09,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 15 transitions. [2018-12-02 17:37:09,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-02 17:37:09,610 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2018-12-02 17:37:09,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 15 transitions. [2018-12-02 17:37:09,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-12-02 17:37:09,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-12-02 17:37:09,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2018-12-02 17:37:09,626 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2018-12-02 17:37:09,626 INFO L608 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2018-12-02 17:37:09,626 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-02 17:37:09,626 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 15 transitions. [2018-12-02 17:37:09,627 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-12-02 17:37:09,627 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 17:37:09,627 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 17:37:09,627 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2018-12-02 17:37:09,627 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-12-02 17:37:09,627 INFO L794 eck$LassoCheckResult]: Stem: 115#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 109#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 110#L367 assume !(main_~length~0 < 1); 116#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.alloc(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 117#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 118#L370-3 assume !(main_~i~0 < main_~length~0); 113#L370-4 main_~j~0 := 1; 114#L377-2 [2018-12-02 17:37:09,627 INFO L796 eck$LassoCheckResult]: Loop: 114#L377-2 assume !!(1 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_~j~0 := main_~j~0 * main_#t~mem210;havoc main_#t~mem210; 114#L377-2 [2018-12-02 17:37:09,628 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:37:09,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1806815510, now seen corresponding path program 1 times [2018-12-02 17:37:09,628 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 17:37:09,628 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 17:37:09,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:37:09,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:37:09,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:37:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:37:09,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 17:37:09,662 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 17:37:09,662 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 17:37:09,663 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-02 17:37:09,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:37:09,663 INFO L82 PathProgramCache]: Analyzing trace with hash 73, now seen corresponding path program 1 times [2018-12-02 17:37:09,663 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 17:37:09,664 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 17:37:09,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:37:09,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:37:09,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:37:09,666 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-02 17:37:09,666 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-02 17:37:09,666 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bd087719-b45f-4cd9-9c5d-1dad68faecb0/bin-2019/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 [2018-12-02 17:37:09,671 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:37:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 17:37:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 17:37:09,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 17:37:09,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-02 17:37:09,743 INFO L87 Difference]: Start difference. First operand 11 states and 15 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-12-02 17:37:09,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 17:37:09,764 INFO L93 Difference]: Finished difference Result 13 states and 17 transitions. [2018-12-02 17:37:09,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 17:37:09,765 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 17 transitions. [2018-12-02 17:37:09,766 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-12-02 17:37:09,766 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 17 transitions. [2018-12-02 17:37:09,766 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-12-02 17:37:09,767 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-12-02 17:37:09,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2018-12-02 17:37:09,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-02 17:37:09,767 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2018-12-02 17:37:09,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2018-12-02 17:37:09,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2018-12-02 17:37:09,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-12-02 17:37:09,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2018-12-02 17:37:09,768 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-12-02 17:37:09,768 INFO L608 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-12-02 17:37:09,768 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-02 17:37:09,768 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2018-12-02 17:37:09,768 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-12-02 17:37:09,769 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 17:37:09,769 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 17:37:09,769 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 17:37:09,769 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-12-02 17:37:09,769 INFO L794 eck$LassoCheckResult]: Stem: 146#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 140#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 141#L367 assume !(main_~length~0 < 1); 147#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.alloc(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 148#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 149#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 142#L372 assume !(main_#t~mem209 < 1);havoc main_#t~mem209; 143#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 150#L370-3 assume !(main_~i~0 < main_~length~0); 144#L370-4 main_~j~0 := 1; 145#L377-2 [2018-12-02 17:37:09,769 INFO L796 eck$LassoCheckResult]: Loop: 145#L377-2 assume !!(1 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_~j~0 := main_~j~0 * main_#t~mem210;havoc main_#t~mem210; 145#L377-2 [2018-12-02 17:37:09,769 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:37:09,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1982565540, now seen corresponding path program 1 times [2018-12-02 17:37:09,769 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 17:37:09,770 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 17:37:09,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:37:09,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:37:09,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:37:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 17:37:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 17:37:09,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:37:09,785 INFO L82 PathProgramCache]: Analyzing trace with hash 73, now seen corresponding path program 2 times [2018-12-02 17:37:09,785 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 17:37:09,785 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 17:37:09,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:37:09,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:37:09,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:37:09,787 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-02 17:37:09,787 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-02 17:37:09,787 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bd087719-b45f-4cd9-9c5d-1dad68faecb0/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-02 17:37:09,794 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-02 17:37:09,797 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-12-02 17:37:09,798 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2018-12-02 17:37:09,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 17:37:09,815 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:37:09,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1329989554, now seen corresponding path program 1 times [2018-12-02 17:37:09,815 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 17:37:09,815 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 17:37:09,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:37:09,816 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 17:37:09,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:37:09,819 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-02 17:37:09,819 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-02 17:37:09,819 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bd087719-b45f-4cd9-9c5d-1dad68faecb0/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-02 17:37:09,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:37:09,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:37:09,836 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 17:37:09,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 17:37:09,868 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-12-02 17:37:09,868 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-12-02 17:37:09,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 17:37:09,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-02 17:37:09,890 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. cyclomatic complexity: 5 Second operand 6 states. [2018-12-02 17:37:09,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 17:37:09,951 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2018-12-02 17:37:09,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 17:37:09,951 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2018-12-02 17:37:09,952 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-12-02 17:37:09,952 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 16 states and 20 transitions. [2018-12-02 17:37:09,952 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-12-02 17:37:09,953 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-12-02 17:37:09,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 20 transitions. [2018-12-02 17:37:09,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-02 17:37:09,953 INFO L705 BuchiCegarLoop]: Abstraction has 16 states and 20 transitions. [2018-12-02 17:37:09,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 20 transitions. [2018-12-02 17:37:09,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2018-12-02 17:37:09,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-12-02 17:37:09,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2018-12-02 17:37:09,954 INFO L728 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2018-12-02 17:37:09,954 INFO L608 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2018-12-02 17:37:09,954 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-02 17:37:09,954 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 17 transitions. [2018-12-02 17:37:09,954 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-12-02 17:37:09,955 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 17:37:09,955 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 17:37:09,955 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 17:37:09,955 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-12-02 17:37:09,955 INFO L794 eck$LassoCheckResult]: Stem: 228#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 222#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 223#L367 assume !(main_~length~0 < 1); 229#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.alloc(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 230#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 231#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 233#L372 assume !(main_#t~mem209 < 1);havoc main_#t~mem209; 235#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 234#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 224#L372 assume !(main_#t~mem209 < 1);havoc main_#t~mem209; 225#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 232#L370-3 assume !(main_~i~0 < main_~length~0); 226#L370-4 main_~j~0 := 1; 227#L377-2 [2018-12-02 17:37:09,955 INFO L796 eck$LassoCheckResult]: Loop: 227#L377-2 assume !!(1 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_~j~0 := main_~j~0 * main_#t~mem210;havoc main_#t~mem210; 227#L377-2 [2018-12-02 17:37:09,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:37:09,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1781949270, now seen corresponding path program 2 times [2018-12-02 17:37:09,955 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 17:37:09,956 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 17:37:09,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:37:09,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:37:09,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:37:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 17:37:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 17:37:09,967 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:37:09,967 INFO L82 PathProgramCache]: Analyzing trace with hash 73, now seen corresponding path program 3 times [2018-12-02 17:37:09,967 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 17:37:09,967 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 17:37:09,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:37:09,968 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 17:37:09,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:37:09,968 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-02 17:37:09,968 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-02 17:37:09,968 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bd087719-b45f-4cd9-9c5d-1dad68faecb0/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-02 17:37:09,976 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-02 17:37:09,979 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2018-12-02 17:37:09,979 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2018-12-02 17:37:09,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 17:37:10,005 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:37:10,005 INFO L82 PathProgramCache]: Analyzing trace with hash -594147436, now seen corresponding path program 2 times [2018-12-02 17:37:10,005 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 17:37:10,005 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 17:37:10,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:37:10,006 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 17:37:10,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:37:10,009 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-02 17:37:10,010 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-02 17:37:10,010 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bd087719-b45f-4cd9-9c5d-1dad68faecb0/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-02 17:37:10,015 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-02 17:37:10,024 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-02 17:37:10,025 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2018-12-02 17:37:10,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 17:37:10,197 WARN L180 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 75 [2018-12-02 17:37:10,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 02.12 05:37:10 BoogieIcfgContainer [2018-12-02 17:37:10,243 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-02 17:37:10,243 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 17:37:10,244 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 17:37:10,244 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 17:37:10,244 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:37:08" (3/4) ... [2018-12-02 17:37:10,246 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2018-12-02 17:37:10,270 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_bd087719-b45f-4cd9-9c5d-1dad68faecb0/bin-2019/uautomizer/witness.graphml [2018-12-02 17:37:10,270 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 17:37:10,270 INFO L168 Benchmark]: Toolchain (without parser) took 1848.50 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -132.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 17:37:10,271 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 17:37:10,271 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.59 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -140.9 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2018-12-02 17:37:10,271 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-02 17:37:10,272 INFO L168 Benchmark]: Boogie Preprocessor took 12.90 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 17:37:10,272 INFO L168 Benchmark]: RCFGBuilder took 126.48 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2018-12-02 17:37:10,272 INFO L168 Benchmark]: BuchiAutomizer took 1354.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -14.7 MB). Peak memory consumption was 238.3 MB. Max. memory is 11.5 GB. [2018-12-02 17:37:10,272 INFO L168 Benchmark]: Witness Printer took 26.52 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-12-02 17:37:10,274 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 302.59 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -140.9 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 23.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.90 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 126.48 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1354.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -14.7 MB). Peak memory consumption was 238.3 MB. Max. memory is 11.5 GB. * Witness Printer took 26.52 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. 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 3 terminating modules (2 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i + length and consists of 5 locations. 2 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 14 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.3s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 1.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 14 states and ocurred in iteration 3. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 29 SDtfs, 56 SDslu, 26 SDs, 0 SdLazy, 58 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU1 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital101 mio100 ax100 hnf99 lsp91 ukn82 mio100 lsp66 div100 bol100 ite100 ukn100 eq167 hnf91 smp100 dnf100 smp100 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 5ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: 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: 377]: 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 {NULL=0, \result=0, arr=3, arr=0, i=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@197a448f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@476c8fd4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@ae5f2fb=0, length=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@536e60f1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@ae5f2fb=3, j=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@69cae171=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@7eb06c4=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 377]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L365] int i, j; [L366] int length = __VERIFIER_nondet_int(); [L367] COND FALSE !(length < 1) [L368] int *arr = __builtin_alloca(length*sizeof(int)); [L369] COND FALSE !(!arr) [L370] i=0 [L370] COND TRUE i