./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 b5237d83 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_9866a900-f2ee-47bb-821e-fc754ac42ea1/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9866a900-f2ee-47bb-821e-fc754ac42ea1/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9866a900-f2ee-47bb-821e-fc754ac42ea1/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9866a900-f2ee-47bb-821e-fc754ac42ea1/bin/uautomizer-vX5HgA9Q3a/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-nla/dijkstra2-both-nt.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9866a900-f2ee-47bb-821e-fc754ac42ea1/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9866a900-f2ee-47bb-821e-fc754ac42ea1/bin/uautomizer-vX5HgA9Q3a --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-b5237d8 [2022-11-21 16:43:13,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:43:13,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:43:13,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:43:13,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:43:13,283 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:43:13,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:43:13,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:43:13,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:43:13,288 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:43:13,289 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:43:13,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:43:13,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:43:13,291 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:43:13,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:43:13,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:43:13,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:43:13,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:43:13,296 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:43:13,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:43:13,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:43:13,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:43:13,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:43:13,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:43:13,306 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:43:13,306 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:43:13,306 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:43:13,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:43:13,308 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:43:13,309 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:43:13,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:43:13,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:43:13,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:43:13,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:43:13,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:43:13,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:43:13,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:43:13,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:43:13,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:43:13,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:43:13,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:43:13,328 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9866a900-f2ee-47bb-821e-fc754ac42ea1/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-21 16:43:13,371 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:43:13,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:43:13,372 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:43:13,372 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:43:13,373 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:43:13,373 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:43:13,373 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:43:13,374 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-21 16:43:13,374 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-21 16:43:13,374 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-21 16:43:13,375 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-21 16:43:13,375 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-21 16:43:13,376 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-21 16:43:13,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:43:13,376 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:43:13,376 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:43:13,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:43:13,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:43:13,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:43:13,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-21 16:43:13,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-21 16:43:13,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-21 16:43:13,378 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:43:13,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:43:13,378 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-21 16:43:13,378 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:43:13,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-21 16:43:13,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:43:13,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:43:13,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:43:13,379 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:43:13,381 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-21 16:43:13,382 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_9866a900-f2ee-47bb-821e-fc754ac42ea1/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9866a900-f2ee-47bb-821e-fc754ac42ea1/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e7687da568dfe273ac225f01dbc8df1f76ef15d8b8e5d222cf6fab4c622d621 [2022-11-21 16:43:13,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:43:13,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:43:13,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:43:13,668 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:43:13,669 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:43:13,670 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9866a900-f2ee-47bb-821e-fc754ac42ea1/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/termination-nla/dijkstra2-both-nt.c [2022-11-21 16:43:16,727 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:43:16,972 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:43:16,973 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9866a900-f2ee-47bb-821e-fc754ac42ea1/sv-benchmarks/c/termination-nla/dijkstra2-both-nt.c [2022-11-21 16:43:16,979 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9866a900-f2ee-47bb-821e-fc754ac42ea1/bin/uautomizer-vX5HgA9Q3a/data/b1a1439f6/3bd69cca326c49e890e76c88fd58f5e7/FLAG846440172 [2022-11-21 16:43:16,996 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9866a900-f2ee-47bb-821e-fc754ac42ea1/bin/uautomizer-vX5HgA9Q3a/data/b1a1439f6/3bd69cca326c49e890e76c88fd58f5e7 [2022-11-21 16:43:16,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:43:17,001 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:43:17,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:43:17,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:43:17,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:43:17,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:43:16" (1/1) ... [2022-11-21 16:43:17,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@778da127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:43:17, skipping insertion in model container [2022-11-21 16:43:17,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:43:16" (1/1) ... [2022-11-21 16:43:17,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:43:17,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:43:17,223 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:43:17,231 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:43:17,255 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:43:17,270 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:43:17,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:43:17 WrapperNode [2022-11-21 16:43:17,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:43:17,275 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:43:17,275 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:43:17,276 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:43:17,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:43:17" (1/1) ... [2022-11-21 16:43:17,290 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:43:17" (1/1) ... [2022-11-21 16:43:17,312 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2022-11-21 16:43:17,312 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:43:17,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:43:17,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:43:17,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:43:17,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:43:17" (1/1) ... [2022-11-21 16:43:17,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:43:17" (1/1) ... [2022-11-21 16:43:17,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:43:17" (1/1) ... [2022-11-21 16:43:17,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:43:17" (1/1) ... [2022-11-21 16:43:17,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:43:17" (1/1) ... [2022-11-21 16:43:17,345 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:43:17" (1/1) ... [2022-11-21 16:43:17,346 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:43:17" (1/1) ... [2022-11-21 16:43:17,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:43:17" (1/1) ... [2022-11-21 16:43:17,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:43:17,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:43:17,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:43:17,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:43:17,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:43:17" (1/1) ... [2022-11-21 16:43:17,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:43:17,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9866a900-f2ee-47bb-821e-fc754ac42ea1/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:43:17,399 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9866a900-f2ee-47bb-821e-fc754ac42ea1/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 16:43:17,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9866a900-f2ee-47bb-821e-fc754ac42ea1/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-21 16:43:17,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:43:17,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:43:17,526 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:43:17,529 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:43:17,712 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:43:17,719 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:43:17,722 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 16:43:17,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:43:17 BoogieIcfgContainer [2022-11-21 16:43:17,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:43:17,728 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-21 16:43:17,729 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-21 16:43:17,733 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-21 16:43:17,734 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-21 16:43:17,734 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.11 04:43:16" (1/3) ... [2022-11-21 16:43:17,736 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@57dd9200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 04:43:17, skipping insertion in model container [2022-11-21 16:43:17,736 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-21 16:43:17,736 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:43:17" (2/3) ... [2022-11-21 16:43:17,738 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@57dd9200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 04:43:17, skipping insertion in model container [2022-11-21 16:43:17,739 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-21 16:43:17,739 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:43:17" (3/3) ... [2022-11-21 16:43:17,747 INFO L332 chiAutomizerObserver]: Analyzing ICFG dijkstra2-both-nt.c [2022-11-21 16:43:17,848 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-21 16:43:17,848 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-21 16:43:17,848 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-21 16:43:17,849 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-21 16:43:17,849 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-21 16:43:17,850 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-21 16:43:17,850 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-21 16:43:17,850 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-21 16:43:17,855 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) [2022-11-21 16:43:17,881 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-21 16:43:17,881 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 16:43:17,881 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 16:43:17,891 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-21 16:43:17,891 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-21 16:43:17,891 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-21 16:43:17,892 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) [2022-11-21 16:43:17,893 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-21 16:43:17,894 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 16:43:17,894 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 16:43:17,895 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-21 16:43:17,895 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-21 16:43:17,904 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 [2022-11-21 16:43:17,905 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 [2022-11-21 16:43:17,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:43:17,912 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-11-21 16:43:17,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:43:17,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146042348] [2022-11-21 16:43:17,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:43:17,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:43:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:43:18,016 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:43:18,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:43:18,048 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:43:18,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:43:18,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1420, now seen corresponding path program 1 times [2022-11-21 16:43:18,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:43:18,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647155494] [2022-11-21 16:43:18,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:43:18,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:43:18,074 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 16:43:18,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1411657846] [2022-11-21 16:43:18,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:43:18,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:43:18,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9866a900-f2ee-47bb-821e-fc754ac42ea1/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:43:18,083 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9866a900-f2ee-47bb-821e-fc754ac42ea1/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:43:18,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9866a900-f2ee-47bb-821e-fc754ac42ea1/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:43:18,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:43:18,139 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:43:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:43:18,161 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:43:18,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:43:18,163 INFO L85 PathProgramCache]: Analyzing trace with hash 28693997, now seen corresponding path program 1 times [2022-11-21 16:43:18,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:43:18,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179815797] [2022-11-21 16:43:18,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:43:18,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:43:18,171 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 16:43:18,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [511386801] [2022-11-21 16:43:18,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:43:18,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:43:18,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9866a900-f2ee-47bb-821e-fc754ac42ea1/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:43:18,239 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9866a900-f2ee-47bb-821e-fc754ac42ea1/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:43:18,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9866a900-f2ee-47bb-821e-fc754ac42ea1/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:43:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:43:18,321 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:43:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:43:18,332 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:43:30,405 WARN L233 SmtUtils]: Spent 12.07s 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) [2022-11-21 16:43:42,552 WARN L233 SmtUtils]: Spent 12.07s 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) [2022-11-21 16:43:54,737 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) [2022-11-21 16:44:07,100 WARN L233 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) [2022-11-21 16:44:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:07,142 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:44:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:07,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.11 04:44:07 BoogieIcfgContainer [2022-11-21 16:44:07,187 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-21 16:44:07,188 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 16:44:07,188 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 16:44:07,188 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 16:44:07,189 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:43:17" (3/4) ... [2022-11-21 16:44:07,191 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-21 16:44:07,261 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9866a900-f2ee-47bb-821e-fc754ac42ea1/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 16:44:07,274 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 16:44:07,276 INFO L158 Benchmark]: Toolchain (without parser) took 50275.01ms. Allocated memory is still 155.2MB. Free memory was 124.9MB in the beginning and 67.2MB in the end (delta: 57.6MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2022-11-21 16:44:07,276 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 117.4MB. Free memory was 72.4MB in the beginning and 72.2MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:44:07,277 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.54ms. Allocated memory is still 155.2MB. Free memory was 124.9MB in the beginning and 115.4MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 16:44:07,278 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.83ms. Allocated memory is still 155.2MB. Free memory was 115.4MB in the beginning and 113.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:44:07,278 INFO L158 Benchmark]: Boogie Preprocessor took 38.37ms. Allocated memory is still 155.2MB. Free memory was 113.9MB in the beginning and 112.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:44:07,279 INFO L158 Benchmark]: RCFGBuilder took 373.78ms. Allocated memory is still 155.2MB. Free memory was 112.9MB in the beginning and 103.4MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 16:44:07,280 INFO L158 Benchmark]: BuchiAutomizer took 49458.84ms. Allocated memory is still 155.2MB. Free memory was 103.4MB in the beginning and 68.8MB in the end (delta: 34.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-11-21 16:44:07,280 INFO L158 Benchmark]: Witness Printer took 86.96ms. Allocated memory is still 155.2MB. Free memory was 68.8MB in the beginning and 67.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:44:07,284 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 117.4MB. Free memory was 72.4MB in the beginning and 72.2MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 271.54ms. Allocated memory is still 155.2MB. Free memory was 124.9MB in the beginning and 115.4MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.83ms. Allocated memory is still 155.2MB. Free memory was 115.4MB in the beginning and 113.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.37ms. Allocated memory is still 155.2MB. Free memory was 113.9MB in the beginning and 112.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 373.78ms. Allocated memory is still 155.2MB. Free memory was 112.9MB in the beginning and 103.4MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 49458.84ms. Allocated memory is still 155.2MB. Free memory was 103.4MB in the beginning and 68.8MB in the end (delta: 34.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 86.96ms. Allocated memory is still 155.2MB. Free memory was 68.8MB in the beginning and 67.2MB in the end (delta: 1.6MB). 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 49.3s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 49.2s. 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! [2022-11-21 16:44:07,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9866a900-f2ee-47bb-821e-fc754ac42ea1/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:44:07,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9866a900-f2ee-47bb-821e-fc754ac42ea1/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 16:44:07,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9866a900-f2ee-47bb-821e-fc754ac42ea1/bin/uautomizer-vX5HgA9Q3a/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)