./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 6b4ec56b 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_0a95a4f7-70ae-4afd-9a4a-e2d00342157f/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a95a4f7-70ae-4afd-9a4a-e2d00342157f/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a95a4f7-70ae-4afd-9a4a-e2d00342157f/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a95a4f7-70ae-4afd-9a4a-e2d00342157f/bin/uautomizer-ug76WZFUDN/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-nla/dijkstra2-both-nt.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a95a4f7-70ae-4afd-9a4a-e2d00342157f/bin/uautomizer-ug76WZFUDN/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a95a4f7-70ae-4afd-9a4a-e2d00342157f/bin/uautomizer-ug76WZFUDN --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-6b4ec56 [2022-11-20 12:45:56,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:45:56,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:45:57,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:45:57,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:45:57,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:45:57,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:45:57,040 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:45:57,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:45:57,050 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:45:57,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:45:57,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:45:57,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:45:57,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:45:57,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:45:57,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:45:57,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:45:57,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:45:57,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:45:57,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:45:57,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:45:57,086 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:45:57,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:45:57,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:45:57,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:45:57,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:45:57,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:45:57,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:45:57,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:45:57,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:45:57,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:45:57,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:45:57,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:45:57,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:45:57,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:45:57,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:45:57,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:45:57,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:45:57,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:45:57,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:45:57,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:45:57,122 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a95a4f7-70ae-4afd-9a4a-e2d00342157f/bin/uautomizer-ug76WZFUDN/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-20 12:45:57,173 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:45:57,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:45:57,177 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:45:57,177 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:45:57,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:45:57,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:45:57,179 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:45:57,180 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-20 12:45:57,180 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-20 12:45:57,180 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-20 12:45:57,182 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-20 12:45:57,182 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-20 12:45:57,182 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-20 12:45:57,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:45:57,183 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:45:57,183 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:45:57,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:45:57,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:45:57,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:45:57,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-20 12:45:57,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-20 12:45:57,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-20 12:45:57,185 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:45:57,186 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:45:57,186 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-20 12:45:57,186 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:45:57,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-20 12:45:57,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:45:57,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:45:57,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:45:57,188 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:45:57,190 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-20 12:45:57,190 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_0a95a4f7-70ae-4afd-9a4a-e2d00342157f/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a95a4f7-70ae-4afd-9a4a-e2d00342157f/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e7687da568dfe273ac225f01dbc8df1f76ef15d8b8e5d222cf6fab4c622d621 [2022-11-20 12:45:57,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:45:57,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:45:57,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:45:57,560 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:45:57,561 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:45:57,562 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a95a4f7-70ae-4afd-9a4a-e2d00342157f/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/termination-nla/dijkstra2-both-nt.c [2022-11-20 12:46:01,370 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:46:01,687 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:46:01,689 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a95a4f7-70ae-4afd-9a4a-e2d00342157f/sv-benchmarks/c/termination-nla/dijkstra2-both-nt.c [2022-11-20 12:46:01,704 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a95a4f7-70ae-4afd-9a4a-e2d00342157f/bin/uautomizer-ug76WZFUDN/data/dda6c3fbc/d105f588ff0d4e51abf5997b1a288911/FLAG65755c726 [2022-11-20 12:46:01,723 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a95a4f7-70ae-4afd-9a4a-e2d00342157f/bin/uautomizer-ug76WZFUDN/data/dda6c3fbc/d105f588ff0d4e51abf5997b1a288911 [2022-11-20 12:46:01,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:46:01,728 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:46:01,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:46:01,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:46:01,734 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:46:01,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:46:01" (1/1) ... [2022-11-20 12:46:01,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@605057ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:01, skipping insertion in model container [2022-11-20 12:46:01,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:46:01" (1/1) ... [2022-11-20 12:46:01,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:46:01,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:46:01,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:46:01,952 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:46:01,967 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:46:01,983 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:46:01,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:01 WrapperNode [2022-11-20 12:46:01,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:46:01,986 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:46:01,986 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:46:01,986 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:46:01,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:01" (1/1) ... [2022-11-20 12:46:02,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:01" (1/1) ... [2022-11-20 12:46:02,024 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2022-11-20 12:46:02,025 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:46:02,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:46:02,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:46:02,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:46:02,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:01" (1/1) ... [2022-11-20 12:46:02,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:01" (1/1) ... [2022-11-20 12:46:02,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:01" (1/1) ... [2022-11-20 12:46:02,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:01" (1/1) ... [2022-11-20 12:46:02,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:01" (1/1) ... [2022-11-20 12:46:02,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:01" (1/1) ... [2022-11-20 12:46:02,046 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:01" (1/1) ... [2022-11-20 12:46:02,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:01" (1/1) ... [2022-11-20 12:46:02,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:46:02,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:46:02,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:46:02,051 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:46:02,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:01" (1/1) ... [2022-11-20 12:46:02,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:46:02,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a95a4f7-70ae-4afd-9a4a-e2d00342157f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:46:02,091 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a95a4f7-70ae-4afd-9a4a-e2d00342157f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:46:02,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a95a4f7-70ae-4afd-9a4a-e2d00342157f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-20 12:46:02,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:46:02,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:46:02,215 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:46:02,217 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:46:02,358 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:46:02,367 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:46:02,367 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 12:46:02,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:46:02 BoogieIcfgContainer [2022-11-20 12:46:02,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:46:02,371 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-20 12:46:02,371 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-20 12:46:02,376 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-20 12:46:02,377 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 12:46:02,378 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 12:46:01" (1/3) ... [2022-11-20 12:46:02,379 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1eb72ec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 12:46:02, skipping insertion in model container [2022-11-20 12:46:02,379 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 12:46:02,379 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:01" (2/3) ... [2022-11-20 12:46:02,380 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1eb72ec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 12:46:02, skipping insertion in model container [2022-11-20 12:46:02,380 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 12:46:02,380 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:46:02" (3/3) ... [2022-11-20 12:46:02,382 INFO L332 chiAutomizerObserver]: Analyzing ICFG dijkstra2-both-nt.c [2022-11-20 12:46:02,472 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-20 12:46:02,472 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-20 12:46:02,473 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-20 12:46:02,473 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-20 12:46:02,473 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-20 12:46:02,474 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-20 12:46:02,474 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-20 12:46:02,474 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-20 12:46:02,487 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) [2022-11-20 12:46:02,535 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-20 12:46:02,550 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:46:02,551 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:46:02,558 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-20 12:46:02,559 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-20 12:46:02,559 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-20 12:46:02,559 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) [2022-11-20 12:46:02,561 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-20 12:46:02,561 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:46:02,561 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:46:02,562 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-20 12:46:02,566 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-20 12:46:02,587 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 [2022-11-20 12:46:02,588 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 [2022-11-20 12:46:02,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:46:02,612 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-11-20 12:46:02,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:46:02,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190070766] [2022-11-20 12:46:02,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:46:02,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:46:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:46:02,745 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:46:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:46:02,786 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:46:02,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:46:02,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1420, now seen corresponding path program 1 times [2022-11-20 12:46:02,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:46:02,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151998262] [2022-11-20 12:46:02,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:46:02,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:46:02,822 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:46:02,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1396043494] [2022-11-20 12:46:02,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:46:02,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:46:02,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a95a4f7-70ae-4afd-9a4a-e2d00342157f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:46:02,842 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a95a4f7-70ae-4afd-9a4a-e2d00342157f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:46:02,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a95a4f7-70ae-4afd-9a4a-e2d00342157f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:46:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:46:02,919 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:46:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:46:02,933 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:46:02,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:46:02,954 INFO L85 PathProgramCache]: Analyzing trace with hash 28693997, now seen corresponding path program 1 times [2022-11-20 12:46:02,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:46:02,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781580922] [2022-11-20 12:46:02,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:46:02,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:46:02,965 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:46:02,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [773721106] [2022-11-20 12:46:02,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:46:02,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:46:02,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a95a4f7-70ae-4afd-9a4a-e2d00342157f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:46:02,998 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a95a4f7-70ae-4afd-9a4a-e2d00342157f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:46:03,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a95a4f7-70ae-4afd-9a4a-e2d00342157f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:46:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:46:03,049 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:46:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:46:03,062 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:46:15,172 WARN L233 SmtUtils]: Spent 12.10s 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) [2022-11-20 12:46:27,313 WARN L233 SmtUtils]: Spent 12.02s 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) [2022-11-20 12:46:39,451 WARN L233 SmtUtils]: Spent 12.08s 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) [2022-11-20 12:46:51,681 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) [2022-11-20 12:46:51,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:46:51,704 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:46:51,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:46:51,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 12:46:51 BoogieIcfgContainer [2022-11-20 12:46:51,741 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-20 12:46:51,742 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 12:46:51,746 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 12:46:51,747 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 12:46:51,748 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:46:02" (3/4) ... [2022-11-20 12:46:51,752 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-20 12:46:51,801 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a95a4f7-70ae-4afd-9a4a-e2d00342157f/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 12:46:51,801 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 12:46:51,802 INFO L158 Benchmark]: Toolchain (without parser) took 50074.49ms. Allocated memory is still 161.5MB. Free memory was 132.5MB in the beginning and 123.1MB in the end (delta: 9.3MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. [2022-11-20 12:46:51,803 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 117.4MB. Free memory is still 58.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:46:51,804 INFO L158 Benchmark]: CACSL2BoogieTranslator took 255.34ms. Allocated memory is still 161.5MB. Free memory was 132.5MB in the beginning and 123.5MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 12:46:51,805 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.73ms. Allocated memory is still 161.5MB. Free memory was 123.5MB in the beginning and 122.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:46:51,805 INFO L158 Benchmark]: Boogie Preprocessor took 23.09ms. Allocated memory is still 161.5MB. Free memory was 122.0MB in the beginning and 120.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:46:51,806 INFO L158 Benchmark]: RCFGBuilder took 320.07ms. Allocated memory is still 161.5MB. Free memory was 120.9MB in the beginning and 111.6MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 12:46:51,807 INFO L158 Benchmark]: BuchiAutomizer took 49370.29ms. Allocated memory is still 161.5MB. Free memory was 111.6MB in the beginning and 124.9MB in the end (delta: -13.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:46:51,808 INFO L158 Benchmark]: Witness Printer took 58.91ms. Allocated memory is still 161.5MB. Free memory was 124.9MB in the beginning and 123.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:46:51,812 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 117.4MB. Free memory is still 58.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 255.34ms. Allocated memory is still 161.5MB. Free memory was 132.5MB in the beginning and 123.5MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.73ms. Allocated memory is still 161.5MB. Free memory was 123.5MB in the beginning and 122.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.09ms. Allocated memory is still 161.5MB. Free memory was 122.0MB in the beginning and 120.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 320.07ms. Allocated memory is still 161.5MB. Free memory was 120.9MB in the beginning and 111.6MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 49370.29ms. Allocated memory is still 161.5MB. Free memory was 111.6MB in the beginning and 124.9MB in the end (delta: -13.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 58.91ms. Allocated memory is still 161.5MB. Free memory was 124.9MB in the beginning and 123.1MB in the end (delta: 1.8MB). 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 49.2s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 49.1s. 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! [2022-11-20 12:46:51,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a95a4f7-70ae-4afd-9a4a-e2d00342157f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:46:52,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a95a4f7-70ae-4afd-9a4a-e2d00342157f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:46:52,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a95a4f7-70ae-4afd-9a4a-e2d00342157f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with 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)