./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-nla/dijkstra2-both-nt.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57033c71-a1fe-4a40-bdb8-0ced2be20a13/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57033c71-a1fe-4a40-bdb8-0ced2be20a13/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57033c71-a1fe-4a40-bdb8-0ced2be20a13/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57033c71-a1fe-4a40-bdb8-0ced2be20a13/bin/uautomizer-Dbtcem3rbc/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-nla/dijkstra2-both-nt.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57033c71-a1fe-4a40-bdb8-0ced2be20a13/bin/uautomizer-Dbtcem3rbc/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57033c71-a1fe-4a40-bdb8-0ced2be20a13/bin/uautomizer-Dbtcem3rbc --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 3e7687da568dfe273ac225f01dbc8df1f76ef15d8b8e5d222cf6fab4c622d621 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:16:37,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:16:37,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:16:37,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:16:37,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:16:37,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:16:37,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:16:37,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:16:37,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:16:37,914 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:16:37,915 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:16:37,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:16:37,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:16:37,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:16:37,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:16:37,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:16:37,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:16:37,928 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:16:37,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:16:37,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:16:37,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:16:37,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:16:37,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:16:37,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:16:37,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:16:37,958 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:16:37,958 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:16:37,960 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:16:37,961 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:16:37,962 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:16:37,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:16:37,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:16:37,966 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:16:37,967 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:16:37,968 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:16:37,969 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:16:37,969 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:16:37,970 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:16:37,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:16:37,971 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:16:37,972 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:16:37,972 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57033c71-a1fe-4a40-bdb8-0ced2be20a13/bin/uautomizer-Dbtcem3rbc/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-02 20:16:38,018 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:16:38,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:16:38,019 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:16:38,020 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:16:38,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:16:38,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:16:38,022 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:16:38,022 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-02 20:16:38,022 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-02 20:16:38,022 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-02 20:16:38,023 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-02 20:16:38,024 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-02 20:16:38,024 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-02 20:16:38,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:16:38,024 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:16:38,025 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:16:38,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:16:38,025 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:16:38,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:16:38,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-02 20:16:38,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-02 20:16:38,026 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-02 20:16:38,026 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:16:38,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:16:38,026 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-02 20:16:38,027 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:16:38,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-02 20:16:38,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:16:38,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:16:38,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:16:38,028 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:16:38,029 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-02 20:16:38,030 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_57033c71-a1fe-4a40-bdb8-0ced2be20a13/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57033c71-a1fe-4a40-bdb8-0ced2be20a13/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e7687da568dfe273ac225f01dbc8df1f76ef15d8b8e5d222cf6fab4c622d621 [2022-11-02 20:16:38,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:16:38,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:16:38,434 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:16:38,435 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:16:38,455 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:16:38,457 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57033c71-a1fe-4a40-bdb8-0ced2be20a13/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/termination-nla/dijkstra2-both-nt.c [2022-11-02 20:16:38,554 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57033c71-a1fe-4a40-bdb8-0ced2be20a13/bin/uautomizer-Dbtcem3rbc/data/47715f036/338012c8c0494d90b90d25a120e433fd/FLAG0c7d6dd79 [2022-11-02 20:16:39,198 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:16:39,198 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57033c71-a1fe-4a40-bdb8-0ced2be20a13/sv-benchmarks/c/termination-nla/dijkstra2-both-nt.c [2022-11-02 20:16:39,207 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57033c71-a1fe-4a40-bdb8-0ced2be20a13/bin/uautomizer-Dbtcem3rbc/data/47715f036/338012c8c0494d90b90d25a120e433fd/FLAG0c7d6dd79 [2022-11-02 20:16:39,556 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57033c71-a1fe-4a40-bdb8-0ced2be20a13/bin/uautomizer-Dbtcem3rbc/data/47715f036/338012c8c0494d90b90d25a120e433fd [2022-11-02 20:16:39,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:16:39,565 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:16:39,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:16:39,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:16:39,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:16:39,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:16:39" (1/1) ... [2022-11-02 20:16:39,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@612977ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:39, skipping insertion in model container [2022-11-02 20:16:39,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:16:39" (1/1) ... [2022-11-02 20:16:39,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:16:39,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:16:39,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:16:39,872 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:16:39,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:16:39,905 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:16:39,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:39 WrapperNode [2022-11-02 20:16:39,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:16:39,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:16:39,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:16:39,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:16:39,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:39" (1/1) ... [2022-11-02 20:16:39,923 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:39" (1/1) ... [2022-11-02 20:16:39,944 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2022-11-02 20:16:39,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:16:39,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:16:39,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:16:39,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:16:39,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:39" (1/1) ... [2022-11-02 20:16:39,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:39" (1/1) ... [2022-11-02 20:16:39,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:39" (1/1) ... [2022-11-02 20:16:39,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:39" (1/1) ... [2022-11-02 20:16:39,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:39" (1/1) ... [2022-11-02 20:16:39,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:39" (1/1) ... [2022-11-02 20:16:39,967 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:39" (1/1) ... [2022-11-02 20:16:39,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:39" (1/1) ... [2022-11-02 20:16:39,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:16:39,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:16:39,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:16:39,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:16:39,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:39" (1/1) ... [2022-11-02 20:16:39,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:16:39,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57033c71-a1fe-4a40-bdb8-0ced2be20a13/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:16:40,007 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57033c71-a1fe-4a40-bdb8-0ced2be20a13/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:16:40,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57033c71-a1fe-4a40-bdb8-0ced2be20a13/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-02 20:16:40,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:16:40,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:16:40,134 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:16:40,136 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:16:40,277 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:16:40,286 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:16:40,286 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:16:40,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:16:40 BoogieIcfgContainer [2022-11-02 20:16:40,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:16:40,290 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-02 20:16:40,290 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-02 20:16:40,295 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-02 20:16:40,296 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:16:40,296 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 02.11 08:16:39" (1/3) ... [2022-11-02 20:16:40,298 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@78c17423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 08:16:40, skipping insertion in model container [2022-11-02 20:16:40,298 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:16:40,298 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:39" (2/3) ... [2022-11-02 20:16:40,298 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@78c17423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 08:16:40, skipping insertion in model container [2022-11-02 20:16:40,299 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:16:40,299 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:16:40" (3/3) ... [2022-11-02 20:16:40,300 INFO L332 chiAutomizerObserver]: Analyzing ICFG dijkstra2-both-nt.c [2022-11-02 20:16:40,365 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-02 20:16:40,366 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-02 20:16:40,366 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-02 20:16:40,366 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-02 20:16:40,366 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-02 20:16:40,366 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-02 20:16:40,366 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-02 20:16:40,367 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-02 20:16:40,375 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2022-11-02 20:16:40,399 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-02 20:16:40,399 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:16:40,399 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:16:40,407 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-02 20:16:40,408 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-02 20:16:40,408 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-02 20:16:40,408 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2022-11-02 20:16:40,410 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-02 20:16:40,410 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:16:40,410 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:16:40,410 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-02 20:16:40,411 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-02 20:16:40,421 INFO L748 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~n~0#1, main_~p~0#1, main_~q~0#1, main_~r~0#1, main_~h~0#1;havoc main_~n~0#1;havoc main_~p~0#1;havoc main_~q~0#1;havoc main_~r~0#1;havoc main_~h~0#1;main_~n~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := 0;main_~q~0#1 := 1;main_~r~0#1 := main_~n~0#1;main_~h~0#1 := 0; 7#L40true assume main_~q~0#1 > main_~n~0#1; 8#L51-1true [2022-11-02 20:16:40,422 INFO L750 eck$LassoCheckResult]: Loop: 8#L51-1true assume !!(main_~p~0#1 * main_~p~0#1 + main_~r~0#1 * main_~q~0#1 == main_~n~0#1 * main_~q~0#1); 4#L51true assume !(4 * (if main_~q~0#1 < 0 && 0 != main_~q~0#1 % 4 then 1 + main_~q~0#1 / 4 else main_~q~0#1 / 4) == main_~q~0#1 && 2 * (if main_~p~0#1 < 0 && 0 != main_~p~0#1 % 2 then 1 + main_~p~0#1 / 2 else main_~p~0#1 / 2) == main_~p~0#1); 8#L51-1true [2022-11-02 20:16:40,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:40,429 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-11-02 20:16:40,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:40,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165540533] [2022-11-02 20:16:40,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:40,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:16:40,555 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:16:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:16:40,583 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:16:40,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:40,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1420, now seen corresponding path program 1 times [2022-11-02 20:16:40,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:40,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124307400] [2022-11-02 20:16:40,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:40,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:40,599 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:16:40,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1674739678] [2022-11-02 20:16:40,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:40,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:40,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57033c71-a1fe-4a40-bdb8-0ced2be20a13/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:16:40,603 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57033c71-a1fe-4a40-bdb8-0ced2be20a13/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:16:40,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57033c71-a1fe-4a40-bdb8-0ced2be20a13/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:16:40,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:16:40,696 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:16:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:16:40,709 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:16:40,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:40,711 INFO L85 PathProgramCache]: Analyzing trace with hash 28693997, now seen corresponding path program 1 times [2022-11-02 20:16:40,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:40,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796705251] [2022-11-02 20:16:40,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:40,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:40,735 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:16:40,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1142620610] [2022-11-02 20:16:40,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:40,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:40,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57033c71-a1fe-4a40-bdb8-0ced2be20a13/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:16:40,740 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57033c71-a1fe-4a40-bdb8-0ced2be20a13/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:16:40,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57033c71-a1fe-4a40-bdb8-0ced2be20a13/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:16:40,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:16:40,794 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:16:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:16:40,809 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:18:12,420 WARN L234 SmtUtils]: Spent 1.53m on a formula simplification that was a NOOP. DAG size: 37 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-02 20:18:24,573 WARN L234 SmtUtils]: Spent 12.06s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-02 20:18:36,931 WARN L234 SmtUtils]: Spent 12.30s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-02 20:18:49,266 WARN L234 SmtUtils]: Spent 12.19s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-02 20:18:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:18:49,290 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:18:49,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:18:49,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 02.11 08:18:49 BoogieIcfgContainer [2022-11-02 20:18:49,329 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-02 20:18:49,330 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:18:49,330 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:18:49,331 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:18:49,331 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:16:40" (3/4) ... [2022-11-02 20:18:49,335 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-02 20:18:49,376 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57033c71-a1fe-4a40-bdb8-0ced2be20a13/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 20:18:49,376 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:18:49,378 INFO L158 Benchmark]: Toolchain (without parser) took 129812.99ms. Allocated memory is still 127.9MB. Free memory was 95.4MB in the beginning and 59.3MB in the end (delta: 36.0MB). Peak memory consumption was 34.6MB. Max. memory is 16.1GB. [2022-11-02 20:18:49,379 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 88.1MB. Free memory was 59.9MB in the beginning and 59.8MB in the end (delta: 29.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:18:49,380 INFO L158 Benchmark]: CACSL2BoogieTranslator took 335.25ms. Allocated memory is still 127.9MB. Free memory was 95.1MB in the beginning and 105.8MB in the end (delta: -10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 20:18:49,381 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.59ms. Allocated memory is still 127.9MB. Free memory was 105.8MB in the beginning and 104.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:18:49,381 INFO L158 Benchmark]: Boogie Preprocessor took 23.85ms. Allocated memory is still 127.9MB. Free memory was 104.7MB in the beginning and 103.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:18:49,382 INFO L158 Benchmark]: RCFGBuilder took 318.42ms. Allocated memory is still 127.9MB. Free memory was 103.7MB in the beginning and 94.2MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:18:49,383 INFO L158 Benchmark]: BuchiAutomizer took 129039.55ms. Allocated memory is still 127.9MB. Free memory was 94.0MB in the beginning and 61.1MB in the end (delta: 33.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-11-02 20:18:49,384 INFO L158 Benchmark]: Witness Printer took 46.53ms. Allocated memory is still 127.9MB. Free memory was 61.1MB in the beginning and 59.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:18:49,387 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 88.1MB. Free memory was 59.9MB in the beginning and 59.8MB in the end (delta: 29.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 335.25ms. Allocated memory is still 127.9MB. Free memory was 95.1MB in the beginning and 105.8MB in the end (delta: -10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.59ms. Allocated memory is still 127.9MB. Free memory was 105.8MB in the beginning and 104.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.85ms. Allocated memory is still 127.9MB. Free memory was 104.7MB in the beginning and 103.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 318.42ms. Allocated memory is still 127.9MB. Free memory was 103.7MB in the beginning and 94.2MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 129039.55ms. Allocated memory is still 127.9MB. Free memory was 94.0MB in the beginning and 61.1MB in the end (delta: 33.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 46.53ms. Allocated memory is still 127.9MB. Free memory was 61.1MB in the beginning and 59.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 128.9s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 128.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 41]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L22] int n, p, q, r, h; [L24] n = __VERIFIER_nondet_int() [L26] p = 0 [L27] q = 1 [L28] r = n [L29] h = 0 VAL [h=0, n=0, p=0, q=1, r=0] [L40] COND TRUE q > n VAL [h=0, n=0, p=0, q=1, r=0] Loop: [L41] COND TRUE p*p + r*q == n*q [L51] COND FALSE !(4 * (q / 4) == q && 2 * (p / 2) == p) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 41]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L22] int n, p, q, r, h; [L24] n = __VERIFIER_nondet_int() [L26] p = 0 [L27] q = 1 [L28] r = n [L29] h = 0 VAL [h=0, n=0, p=0, q=1, r=0] [L40] COND TRUE q > n VAL [h=0, n=0, p=0, q=1, r=0] Loop: [L41] COND TRUE p*p + r*q == n*q [L51] COND FALSE !(4 * (q / 4) == q && 2 * (p / 2) == p) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-11-02 20:18:49,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57033c71-a1fe-4a40-bdb8-0ced2be20a13/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:18:49,674 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57033c71-a1fe-4a40-bdb8-0ced2be20a13/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 20:18:49,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57033c71-a1fe-4a40-bdb8-0ced2be20a13/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)