./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-nla/knuth-nosqrt-both-nt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d959f22-fe0b-4812-937e-a68422fdcd23/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d959f22-fe0b-4812-937e-a68422fdcd23/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d959f22-fe0b-4812-937e-a68422fdcd23/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d959f22-fe0b-4812-937e-a68422fdcd23/bin/uautomizer-DrprNOufMa/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-nla/knuth-nosqrt-both-nt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d959f22-fe0b-4812-937e-a68422fdcd23/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d959f22-fe0b-4812-937e-a68422fdcd23/bin/uautomizer-DrprNOufMa --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 ca1a9df26896febb4415bcdd1e46e70fe2c8b283193110413dc193d22c6c8cb9 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:00:33,794 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:00:33,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:00:33,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:00:33,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:00:33,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:00:33,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:00:33,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:00:33,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:00:33,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:00:33,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:00:33,835 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:00:33,836 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:00:33,837 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:00:33,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:00:33,840 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:00:33,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:00:33,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:00:33,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:00:33,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:00:33,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:00:33,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:00:33,850 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:00:33,851 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:00:33,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:00:33,855 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:00:33,855 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:00:33,856 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:00:33,856 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:00:33,858 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:00:33,858 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:00:33,858 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:00:33,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:00:33,860 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:00:33,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:00:33,861 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:00:33,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:00:33,861 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:00:33,862 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:00:33,862 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:00:33,863 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:00:33,863 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d959f22-fe0b-4812-937e-a68422fdcd23/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-06 19:00:33,885 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:00:33,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:00:33,886 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:00:33,886 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:00:33,887 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:00:33,887 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:00:33,888 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:00:33,888 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-06 19:00:33,888 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-06 19:00:33,888 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-06 19:00:33,888 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-06 19:00:33,888 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-06 19:00:33,888 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-06 19:00:33,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:00:33,889 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 19:00:33,889 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 19:00:33,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:00:33,889 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 19:00:33,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:00:33,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-06 19:00:33,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-06 19:00:33,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-06 19:00:33,890 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 19:00:33,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 19:00:33,890 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-06 19:00:33,890 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:00:33,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-06 19:00:33,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:00:33,890 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:00:33,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:00:33,891 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 19:00:33,891 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:00:33,892 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-06 19:00:33,892 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d959f22-fe0b-4812-937e-a68422fdcd23/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d959f22-fe0b-4812-937e-a68422fdcd23/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca1a9df26896febb4415bcdd1e46e70fe2c8b283193110413dc193d22c6c8cb9 [2021-12-06 19:00:34,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:00:34,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:00:34,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:00:34,115 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:00:34,116 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:00:34,117 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d959f22-fe0b-4812-937e-a68422fdcd23/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/termination-nla/knuth-nosqrt-both-nt.i [2021-12-06 19:00:34,157 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d959f22-fe0b-4812-937e-a68422fdcd23/bin/uautomizer-DrprNOufMa/data/9efc4511f/96faa9177778412797d46e92dcaef805/FLAGb8d944145 [2021-12-06 19:00:34,509 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:00:34,509 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d959f22-fe0b-4812-937e-a68422fdcd23/sv-benchmarks/c/termination-nla/knuth-nosqrt-both-nt.i [2021-12-06 19:00:34,513 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d959f22-fe0b-4812-937e-a68422fdcd23/bin/uautomizer-DrprNOufMa/data/9efc4511f/96faa9177778412797d46e92dcaef805/FLAGb8d944145 [2021-12-06 19:00:34,523 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d959f22-fe0b-4812-937e-a68422fdcd23/bin/uautomizer-DrprNOufMa/data/9efc4511f/96faa9177778412797d46e92dcaef805 [2021-12-06 19:00:34,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:00:34,526 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:00:34,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:00:34,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:00:34,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:00:34,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:00:34" (1/1) ... [2021-12-06 19:00:34,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f8040f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:00:34, skipping insertion in model container [2021-12-06 19:00:34,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:00:34" (1/1) ... [2021-12-06 19:00:34,536 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:00:34,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:00:34,660 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:00:34,663 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:00:34,678 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:00:34,686 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:00:34,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:00:34 WrapperNode [2021-12-06 19:00:34,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:00:34,687 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:00:34,687 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:00:34,687 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:00:34,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:00:34" (1/1) ... [2021-12-06 19:00:34,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:00:34" (1/1) ... [2021-12-06 19:00:34,718 INFO L137 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 58 [2021-12-06 19:00:34,719 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:00:34,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:00:34,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:00:34,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:00:34,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:00:34" (1/1) ... [2021-12-06 19:00:34,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:00:34" (1/1) ... [2021-12-06 19:00:34,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:00:34" (1/1) ... [2021-12-06 19:00:34,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:00:34" (1/1) ... [2021-12-06 19:00:34,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:00:34" (1/1) ... [2021-12-06 19:00:34,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:00:34" (1/1) ... [2021-12-06 19:00:34,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:00:34" (1/1) ... [2021-12-06 19:00:34,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:00:34,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:00:34,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:00:34,735 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:00:34,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:00:34" (1/1) ... [2021-12-06 19:00:34,742 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:00:34,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d959f22-fe0b-4812-937e-a68422fdcd23/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:00:34,761 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d959f22-fe0b-4812-937e-a68422fdcd23/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:00:34,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d959f22-fe0b-4812-937e-a68422fdcd23/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-06 19:00:34,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:00:34,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:00:34,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-12-06 19:00:34,838 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:00:34,839 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:00:34,943 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:00:34,949 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:00:34,949 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 19:00:34,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:00:34 BoogieIcfgContainer [2021-12-06 19:00:34,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:00:34,951 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-06 19:00:34,951 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-06 19:00:34,953 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-06 19:00:34,954 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 19:00:34,954 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.12 07:00:34" (1/3) ... [2021-12-06 19:00:34,955 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1e3f1b63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.12 07:00:34, skipping insertion in model container [2021-12-06 19:00:34,955 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 19:00:34,955 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:00:34" (2/3) ... [2021-12-06 19:00:34,955 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1e3f1b63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.12 07:00:34, skipping insertion in model container [2021-12-06 19:00:34,955 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 19:00:34,955 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:00:34" (3/3) ... [2021-12-06 19:00:34,956 INFO L388 chiAutomizerObserver]: Analyzing ICFG knuth-nosqrt-both-nt.i [2021-12-06 19:00:34,991 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-06 19:00:34,991 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-06 19:00:34,992 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-06 19:00:34,992 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-06 19:00:34,992 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-06 19:00:34,992 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-06 19:00:34,992 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-06 19:00:34,992 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-06 19:00:35,007 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:00:35,024 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-06 19:00:35,024 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 19:00:35,024 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 19:00:35,029 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-06 19:00:35,029 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-06 19:00:35,029 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-06 19:00:35,029 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:00:35,031 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-06 19:00:35,031 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 19:00:35,031 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 19:00:35,032 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-06 19:00:35,032 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-06 19:00:35,038 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret1#1, main_#t~ret2#1, main_~s~0#1, main_~a~0#1, main_~r~0#1, main_~k~0#1, main_~q~0#1, main_~d~0#1, main_~n~0#1, main_~t~0#1;havoc main_~s~0#1;havoc main_~a~0#1;havoc main_~r~0#1;havoc main_~k~0#1;havoc main_~q~0#1;havoc main_~d~0#1;havoc main_~n~0#1;havoc main_~t~0#1;call main_#t~ret1#1 := __VERIFIER_nondet_unsigned_int();main_~s~0#1 := main_#t~ret1#1;havoc main_#t~ret1#1;call main_#t~ret2#1 := __VERIFIER_nondet_unsigned_int();main_~a~0#1 := main_#t~ret2#1;havoc main_#t~ret2#1; 6#L15true assume !(main_~s~0#1 % 4294967296 >= 8192); 10#L18true assume !(main_~a~0#1 % 4294967296 <= 2);main_~n~0#1 := main_~s~0#1 * main_~s~0#1;main_~d~0#1 := main_~a~0#1;main_~r~0#1 := (if main_~n~0#1 % 4294967296 < 0 && 0 != main_~n~0#1 % 4294967296 % (main_~d~0#1 % 4294967296) then (if main_~d~0#1 % 4294967296 < 0 then main_~n~0#1 % 4294967296 % (main_~d~0#1 % 4294967296) + main_~d~0#1 % 4294967296 else main_~n~0#1 % 4294967296 % (main_~d~0#1 % 4294967296) - main_~d~0#1 % 4294967296) else main_~n~0#1 % 4294967296 % (main_~d~0#1 % 4294967296));main_~t~0#1 := 0;main_~k~0#1 := (if main_~n~0#1 % 4294967296 < 0 && 0 != main_~n~0#1 % 4294967296 % ((main_~d~0#1 - 2) % 4294967296) then (if (main_~d~0#1 - 2) % 4294967296 < 0 then main_~n~0#1 % 4294967296 % ((main_~d~0#1 - 2) % 4294967296) + (main_~d~0#1 - 2) % 4294967296 else main_~n~0#1 % 4294967296 % ((main_~d~0#1 - 2) % 4294967296) - (main_~d~0#1 - 2) % 4294967296) else main_~n~0#1 % 4294967296 % ((main_~d~0#1 - 2) % 4294967296));main_~q~0#1 := 4 * ((if main_~n~0#1 % 4294967296 < 0 && 0 != main_~n~0#1 % 4294967296 % ((main_~d~0#1 - 2) % 4294967296) then (if (main_~d~0#1 - 2) % 4294967296 < 0 then main_~n~0#1 % 4294967296 / ((main_~d~0#1 - 2) % 4294967296) - 1 else 1 + main_~n~0#1 % 4294967296 / ((main_~d~0#1 - 2) % 4294967296)) else main_~n~0#1 % 4294967296 / ((main_~d~0#1 - 2) % 4294967296)) - (if main_~n~0#1 % 4294967296 < 0 && 0 != main_~n~0#1 % 4294967296 % (main_~d~0#1 % 4294967296) then (if main_~d~0#1 % 4294967296 < 0 then main_~n~0#1 % 4294967296 / (main_~d~0#1 % 4294967296) - 1 else 1 + main_~n~0#1 % 4294967296 / (main_~d~0#1 % 4294967296)) else main_~n~0#1 % 4294967296 / (main_~d~0#1 % 4294967296))); 11#L40-2true [2021-12-06 19:00:35,039 INFO L793 eck$LassoCheckResult]: Loop: 11#L40-2true assume !false; 12#L28true assume !!(0 == (main_~d~0#1 * main_~k~0#1 - main_~d~0#1 * main_~t~0#1 - main_~a~0#1 * main_~k~0#1 + main_~a~0#1 * main_~t~0#1) % 4294967296); 7#L29true assume (2 * main_~r~0#1 + main_~q~0#1) % 4294967296 < main_~k~0#1 % 4294967296;main_~t~0#1 := main_~r~0#1;main_~r~0#1 := 2 + (2 * main_~r~0#1 - main_~k~0#1 + main_~q~0#1 + main_~d~0#1);main_~k~0#1 := main_~t~0#1;main_~q~0#1 := 4 + main_~q~0#1;main_~d~0#1 := 2 + main_~d~0#1; 11#L40-2true [2021-12-06 19:00:35,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:00:35,043 INFO L85 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2021-12-06 19:00:35,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:00:35,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875562369] [2021-12-06 19:00:35,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:00:35,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:00:35,129 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:00:35,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1722140534] [2021-12-06 19:00:35,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:00:35,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:00:35,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d959f22-fe0b-4812-937e-a68422fdcd23/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:00:35,131 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d959f22-fe0b-4812-937e-a68422fdcd23/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:00:35,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d959f22-fe0b-4812-937e-a68422fdcd23/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 19:00:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:00:35,169 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:00:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:00:35,194 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 19:00:35,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:00:35,198 INFO L85 PathProgramCache]: Analyzing trace with hash 50807, now seen corresponding path program 1 times [2021-12-06 19:00:35,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:00:35,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674857312] [2021-12-06 19:00:35,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:00:35,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:00:35,204 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:00:35,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1279803746] [2021-12-06 19:00:35,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:00:35,205 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:00:35,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d959f22-fe0b-4812-937e-a68422fdcd23/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:00:35,206 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d959f22-fe0b-4812-937e-a68422fdcd23/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:00:35,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d959f22-fe0b-4812-937e-a68422fdcd23/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 19:00:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:00:35,230 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:00:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:00:35,239 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 19:00:35,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:00:35,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1806911792, now seen corresponding path program 1 times [2021-12-06 19:00:35,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:00:35,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446142662] [2021-12-06 19:00:35,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:00:35,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:00:35,248 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:00:35,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [174021895] [2021-12-06 19:00:35,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:00:35,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:00:35,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d959f22-fe0b-4812-937e-a68422fdcd23/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:00:35,277 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d959f22-fe0b-4812-937e-a68422fdcd23/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:00:35,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d959f22-fe0b-4812-937e-a68422fdcd23/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 19:00:36,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:00:36,007 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.