./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 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be00c8e-d549-4dcb-8e79-fad6a522f7ac/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be00c8e-d549-4dcb-8e79-fad6a522f7ac/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be00c8e-d549-4dcb-8e79-fad6a522f7ac/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be00c8e-d549-4dcb-8e79-fad6a522f7ac/bin/uautomizer-QkZJyEgLgS/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-nla/dijkstra2-both-nt.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be00c8e-d549-4dcb-8e79-fad6a522f7ac/bin/uautomizer-QkZJyEgLgS/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be00c8e-d549-4dcb-8e79-fad6a522f7ac/bin/uautomizer-QkZJyEgLgS --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-4e7fbc6 [2022-11-23 04:10:44,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 04:10:44,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 04:10:44,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 04:10:44,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 04:10:44,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 04:10:44,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 04:10:44,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 04:10:44,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 04:10:44,734 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 04:10:44,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 04:10:44,740 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 04:10:44,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 04:10:44,747 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 04:10:44,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 04:10:44,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 04:10:44,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 04:10:44,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 04:10:44,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 04:10:44,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 04:10:44,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 04:10:44,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 04:10:44,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 04:10:44,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 04:10:44,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 04:10:44,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 04:10:44,792 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 04:10:44,794 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 04:10:44,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 04:10:44,797 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 04:10:44,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 04:10:44,799 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 04:10:44,801 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 04:10:44,803 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 04:10:44,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 04:10:44,805 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 04:10:44,806 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 04:10:44,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 04:10:44,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 04:10:44,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 04:10:44,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 04:10:44,812 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be00c8e-d549-4dcb-8e79-fad6a522f7ac/bin/uautomizer-QkZJyEgLgS/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-23 04:10:44,841 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 04:10:44,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 04:10:44,842 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 04:10:44,843 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 04:10:44,844 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 04:10:44,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 04:10:44,845 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 04:10:44,845 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-23 04:10:44,845 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-23 04:10:44,845 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-23 04:10:44,846 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-23 04:10:44,846 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-23 04:10:44,846 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-23 04:10:44,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 04:10:44,847 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 04:10:44,847 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 04:10:44,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 04:10:44,848 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 04:10:44,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 04:10:44,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-23 04:10:44,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-23 04:10:44,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-23 04:10:44,849 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 04:10:44,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 04:10:44,849 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-23 04:10:44,850 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 04:10:44,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-23 04:10:44,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 04:10:44,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 04:10:44,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 04:10:44,851 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 04:10:44,852 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-23 04:10:44,853 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_4be00c8e-d549-4dcb-8e79-fad6a522f7ac/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be00c8e-d549-4dcb-8e79-fad6a522f7ac/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e7687da568dfe273ac225f01dbc8df1f76ef15d8b8e5d222cf6fab4c622d621 [2022-11-23 04:10:45,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 04:10:45,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 04:10:45,243 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 04:10:45,245 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 04:10:45,246 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 04:10:45,248 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be00c8e-d549-4dcb-8e79-fad6a522f7ac/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/termination-nla/dijkstra2-both-nt.c [2022-11-23 04:10:49,081 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 04:10:49,399 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 04:10:49,400 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be00c8e-d549-4dcb-8e79-fad6a522f7ac/sv-benchmarks/c/termination-nla/dijkstra2-both-nt.c [2022-11-23 04:10:49,409 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be00c8e-d549-4dcb-8e79-fad6a522f7ac/bin/uautomizer-QkZJyEgLgS/data/9efc0c2b6/db0f913450f8448eb9fdc9575de28a64/FLAG271a7f823 [2022-11-23 04:10:49,429 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be00c8e-d549-4dcb-8e79-fad6a522f7ac/bin/uautomizer-QkZJyEgLgS/data/9efc0c2b6/db0f913450f8448eb9fdc9575de28a64 [2022-11-23 04:10:49,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 04:10:49,434 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 04:10:49,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 04:10:49,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 04:10:49,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 04:10:49,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:10:49" (1/1) ... [2022-11-23 04:10:49,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dd3e55b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:49, skipping insertion in model container [2022-11-23 04:10:49,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:10:49" (1/1) ... [2022-11-23 04:10:49,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 04:10:49,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 04:10:49,681 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 04:10:49,689 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 04:10:49,709 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 04:10:49,726 INFO L208 MainTranslator]: Completed translation [2022-11-23 04:10:49,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:49 WrapperNode [2022-11-23 04:10:49,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 04:10:49,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 04:10:49,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 04:10:49,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 04:10:49,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:49" (1/1) ... [2022-11-23 04:10:49,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:49" (1/1) ... [2022-11-23 04:10:49,767 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2022-11-23 04:10:49,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 04:10:49,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 04:10:49,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 04:10:49,770 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 04:10:49,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:49" (1/1) ... [2022-11-23 04:10:49,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:49" (1/1) ... [2022-11-23 04:10:49,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:49" (1/1) ... [2022-11-23 04:10:49,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:49" (1/1) ... [2022-11-23 04:10:49,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:49" (1/1) ... [2022-11-23 04:10:49,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:49" (1/1) ... [2022-11-23 04:10:49,794 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:49" (1/1) ... [2022-11-23 04:10:49,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:49" (1/1) ... [2022-11-23 04:10:49,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 04:10:49,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 04:10:49,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 04:10:49,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 04:10:49,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:49" (1/1) ... [2022-11-23 04:10:49,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-23 04:10:49,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be00c8e-d549-4dcb-8e79-fad6a522f7ac/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:10:49,839 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be00c8e-d549-4dcb-8e79-fad6a522f7ac/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-23 04:10:49,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be00c8e-d549-4dcb-8e79-fad6a522f7ac/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-23 04:10:49,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 04:10:49,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 04:10:49,966 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 04:10:49,968 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 04:10:50,125 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 04:10:50,135 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 04:10:50,135 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 04:10:50,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:10:50 BoogieIcfgContainer [2022-11-23 04:10:50,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 04:10:50,140 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-23 04:10:50,140 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-23 04:10:50,145 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-23 04:10:50,146 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-23 04:10:50,147 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 04:10:49" (1/3) ... [2022-11-23 04:10:50,148 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@12e14399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 04:10:50, skipping insertion in model container [2022-11-23 04:10:50,149 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-23 04:10:50,149 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:49" (2/3) ... [2022-11-23 04:10:50,149 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@12e14399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 04:10:50, skipping insertion in model container [2022-11-23 04:10:50,150 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-23 04:10:50,150 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:10:50" (3/3) ... [2022-11-23 04:10:50,152 INFO L332 chiAutomizerObserver]: Analyzing ICFG dijkstra2-both-nt.c [2022-11-23 04:10:50,227 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-23 04:10:50,228 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-23 04:10:50,228 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-23 04:10:50,228 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-23 04:10:50,228 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-23 04:10:50,229 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-23 04:10:50,229 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-23 04:10:50,229 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-23 04:10:50,234 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) [2022-11-23 04:10:50,254 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-23 04:10:50,254 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-23 04:10:50,254 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-23 04:10:50,261 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-23 04:10:50,262 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-23 04:10:50,262 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-23 04:10:50,262 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) [2022-11-23 04:10:50,263 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-23 04:10:50,264 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-23 04:10:50,264 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-23 04:10:50,264 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-23 04:10:50,265 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-23 04:10:50,275 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 [2022-11-23 04:10:50,275 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 [2022-11-23 04:10:50,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:10:50,285 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-11-23 04:10:50,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:10:50,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624283582] [2022-11-23 04:10:50,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:10:50,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:10:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 04:10:50,413 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 04:10:50,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 04:10:50,441 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 04:10:50,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:10:50,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1420, now seen corresponding path program 1 times [2022-11-23 04:10:50,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:10:50,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593913648] [2022-11-23 04:10:50,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:10:50,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:10:50,457 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 04:10:50,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1384640990] [2022-11-23 04:10:50,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:10:50,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:10:50,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be00c8e-d549-4dcb-8e79-fad6a522f7ac/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:10:50,463 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be00c8e-d549-4dcb-8e79-fad6a522f7ac/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:10:50,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be00c8e-d549-4dcb-8e79-fad6a522f7ac/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 04:10:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 04:10:50,555 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 04:10:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 04:10:50,583 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 04:10:50,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:10:50,586 INFO L85 PathProgramCache]: Analyzing trace with hash 28693997, now seen corresponding path program 1 times [2022-11-23 04:10:50,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:10:50,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071702840] [2022-11-23 04:10:50,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:10:50,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:10:50,598 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 04:10:50,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [334726301] [2022-11-23 04:10:50,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:10:50,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:10:50,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be00c8e-d549-4dcb-8e79-fad6a522f7ac/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:10:50,653 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be00c8e-d549-4dcb-8e79-fad6a522f7ac/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:10:50,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be00c8e-d549-4dcb-8e79-fad6a522f7ac/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 04:10:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 04:10:50,726 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 04:10:50,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 04:10:50,752 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 04:11:02,889 WARN L233 SmtUtils]: Spent 12.13s 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) [2022-11-23 04:11:15,060 WARN L233 SmtUtils]: Spent 12.04s 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) [2022-11-23 04:11:28,568 WARN L233 SmtUtils]: Spent 12.34s 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) [2022-11-23 04:11:40,948 WARN L233 SmtUtils]: Spent 12.27s 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) [2022-11-23 04:11:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 04:11:40,963 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 04:11:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 04:11:40,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 04:11:40 BoogieIcfgContainer [2022-11-23 04:11:40,997 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-23 04:11:40,998 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 04:11:40,998 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 04:11:40,999 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 04:11:40,999 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:10:50" (3/4) ... [2022-11-23 04:11:41,003 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-23 04:11:41,043 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be00c8e-d549-4dcb-8e79-fad6a522f7ac/bin/uautomizer-QkZJyEgLgS/witness.graphml [2022-11-23 04:11:41,043 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 04:11:41,045 INFO L158 Benchmark]: Toolchain (without parser) took 51610.73ms. Allocated memory is still 182.5MB. Free memory was 151.1MB in the beginning and 144.8MB in the end (delta: 6.3MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2022-11-23 04:11:41,046 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 134.2MB. Free memory is still 77.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 04:11:41,047 INFO L158 Benchmark]: CACSL2BoogieTranslator took 291.53ms. Allocated memory is still 182.5MB. Free memory was 150.6MB in the beginning and 141.8MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-23 04:11:41,048 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.87ms. Allocated memory is still 182.5MB. Free memory was 141.8MB in the beginning and 140.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 04:11:41,048 INFO L158 Benchmark]: Boogie Preprocessor took 27.66ms. Allocated memory is still 182.5MB. Free memory was 140.2MB in the beginning and 139.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 04:11:41,049 INFO L158 Benchmark]: RCFGBuilder took 340.89ms. Allocated memory is still 182.5MB. Free memory was 139.2MB in the beginning and 129.8MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-23 04:11:41,050 INFO L158 Benchmark]: BuchiAutomizer took 50857.80ms. Allocated memory is still 182.5MB. Free memory was 129.8MB in the beginning and 146.9MB in the end (delta: -17.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 04:11:41,051 INFO L158 Benchmark]: Witness Printer took 45.64ms. Allocated memory is still 182.5MB. Free memory was 146.9MB in the beginning and 144.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 04:11:41,055 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 134.2MB. Free memory is still 77.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 291.53ms. Allocated memory is still 182.5MB. Free memory was 150.6MB in the beginning and 141.8MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.87ms. Allocated memory is still 182.5MB. Free memory was 141.8MB in the beginning and 140.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.66ms. Allocated memory is still 182.5MB. Free memory was 140.2MB in the beginning and 139.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 340.89ms. Allocated memory is still 182.5MB. Free memory was 139.2MB in the beginning and 129.8MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 50857.80ms. Allocated memory is still 182.5MB. Free memory was 129.8MB in the beginning and 146.9MB in the end (delta: -17.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 45.64ms. Allocated memory is still 182.5MB. Free memory was 146.9MB in the beginning and 144.8MB in the end (delta: 2.1MB). 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 50.7s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 50.7s. 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! [2022-11-23 04:11:41,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be00c8e-d549-4dcb-8e79-fad6a522f7ac/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 04:11:41,302 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be00c8e-d549-4dcb-8e79-fad6a522f7ac/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 04:11:41,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be00c8e-d549-4dcb-8e79-fad6a522f7ac/bin/uautomizer-QkZJyEgLgS/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)