./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 0e0057cc 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_0783a3ed-a09f-4e29-aecc-eb50acef57d5/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0783a3ed-a09f-4e29-aecc-eb50acef57d5/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0783a3ed-a09f-4e29-aecc-eb50acef57d5/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0783a3ed-a09f-4e29-aecc-eb50acef57d5/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-nla/dijkstra2-both-nt.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0783a3ed-a09f-4e29-aecc-eb50acef57d5/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0783a3ed-a09f-4e29-aecc-eb50acef57d5/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --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 --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:49:51,669 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:49:51,737 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0783a3ed-a09f-4e29-aecc-eb50acef57d5/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-29 06:49:51,743 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:49:51,743 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:49:51,783 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:49:51,784 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:49:51,784 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:49:51,785 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:49:51,785 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:49:51,786 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:49:51,787 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:49:51,787 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:49:51,788 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-29 06:49:51,788 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-29 06:49:51,802 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-29 06:49:51,803 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-29 06:49:51,803 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-29 06:49:51,804 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-29 06:49:51,804 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:49:51,805 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-29 06:49:51,805 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:49:51,806 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:49:51,806 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:49:51,806 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:49:51,807 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-29 06:49:51,807 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-29 06:49:51,808 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-29 06:49:51,808 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 06:49:51,809 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:49:51,809 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:49:51,809 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-29 06:49:51,810 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:49:51,810 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:49:51,811 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:49:51,811 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:49:51,811 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:49:51,811 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-29 06:49:51,812 INFO L153 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_0783a3ed-a09f-4e29-aecc-eb50acef57d5/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0783a3ed-a09f-4e29-aecc-eb50acef57d5/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e7687da568dfe273ac225f01dbc8df1f76ef15d8b8e5d222cf6fab4c622d621 [2023-11-29 06:49:52,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:49:52,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:49:52,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:49:52,057 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:49:52,058 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:49:52,059 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0783a3ed-a09f-4e29-aecc-eb50acef57d5/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/termination-nla/dijkstra2-both-nt.c [2023-11-29 06:49:54,808 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:49:54,978 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:49:54,979 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0783a3ed-a09f-4e29-aecc-eb50acef57d5/sv-benchmarks/c/termination-nla/dijkstra2-both-nt.c [2023-11-29 06:49:54,984 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0783a3ed-a09f-4e29-aecc-eb50acef57d5/bin/uautomizer-verify-BQ2R08f2Ya/data/8eefc051d/809f004fd6da4a65973f1d110cb5fbf9/FLAG5a5322566 [2023-11-29 06:49:54,995 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0783a3ed-a09f-4e29-aecc-eb50acef57d5/bin/uautomizer-verify-BQ2R08f2Ya/data/8eefc051d/809f004fd6da4a65973f1d110cb5fbf9 [2023-11-29 06:49:54,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:49:54,998 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:49:55,000 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:49:55,000 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:49:55,005 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:49:55,006 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:49:54" (1/1) ... [2023-11-29 06:49:55,007 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64eba33f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:49:55, skipping insertion in model container [2023-11-29 06:49:55,007 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:49:54" (1/1) ... [2023-11-29 06:49:55,027 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:49:55,154 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:49:55,158 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:49:55,173 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:49:55,187 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:49:55,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:49:55 WrapperNode [2023-11-29 06:49:55,187 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:49:55,189 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:49:55,189 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:49:55,189 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:49:55,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:49:55" (1/1) ... [2023-11-29 06:49:55,201 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:49:55" (1/1) ... [2023-11-29 06:49:55,219 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 28 [2023-11-29 06:49:55,219 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:49:55,220 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:49:55,220 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:49:55,220 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:49:55,231 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:49:55" (1/1) ... [2023-11-29 06:49:55,231 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:49:55" (1/1) ... [2023-11-29 06:49:55,232 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:49:55" (1/1) ... [2023-11-29 06:49:55,239 INFO L175 MemorySlicer]: No memory access in input program. [2023-11-29 06:49:55,239 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:49:55" (1/1) ... [2023-11-29 06:49:55,239 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:49:55" (1/1) ... [2023-11-29 06:49:55,241 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:49:55" (1/1) ... [2023-11-29 06:49:55,245 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:49:55" (1/1) ... [2023-11-29 06:49:55,246 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:49:55" (1/1) ... [2023-11-29 06:49:55,247 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:49:55" (1/1) ... [2023-11-29 06:49:55,248 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:49:55,249 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:49:55,250 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:49:55,250 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:49:55,251 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:49:55" (1/1) ... [2023-11-29 06:49:55,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:49:55,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0783a3ed-a09f-4e29-aecc-eb50acef57d5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:49:55,280 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0783a3ed-a09f-4e29-aecc-eb50acef57d5/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:49:55,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0783a3ed-a09f-4e29-aecc-eb50acef57d5/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-29 06:49:55,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:49:55,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:49:55,381 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:49:55,384 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:49:55,523 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:49:55,532 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:49:55,532 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 06:49:55,534 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:49:55 BoogieIcfgContainer [2023-11-29 06:49:55,534 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:49:55,535 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-29 06:49:55,535 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-29 06:49:55,539 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-29 06:49:55,539 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 06:49:55,539 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 06:49:54" (1/3) ... [2023-11-29 06:49:55,540 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@21c7045c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 06:49:55, skipping insertion in model container [2023-11-29 06:49:55,540 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 06:49:55,540 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:49:55" (2/3) ... [2023-11-29 06:49:55,541 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@21c7045c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 06:49:55, skipping insertion in model container [2023-11-29 06:49:55,541 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 06:49:55,541 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:49:55" (3/3) ... [2023-11-29 06:49:55,542 INFO L332 chiAutomizerObserver]: Analyzing ICFG dijkstra2-both-nt.c [2023-11-29 06:49:55,588 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-29 06:49:55,588 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-29 06:49:55,588 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-29 06:49:55,589 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-29 06:49:55,589 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-29 06:49:55,589 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-29 06:49:55,589 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-29 06:49:55,589 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-29 06:49:55,592 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) [2023-11-29 06:49:55,608 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-29 06:49:55,608 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 06:49:55,608 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 06:49:55,613 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-29 06:49:55,613 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-29 06:49:55,613 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-29 06:49:55,614 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) [2023-11-29 06:49:55,615 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-29 06:49:55,615 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 06:49:55,615 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 06:49:55,616 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-29 06:49:55,616 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-29 06:49:55,621 INFO L748 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~n~0#1, main_~p~0#1, main_~q~0#1, main_~r~0#1, main_~h~0#1;havoc main_~n~0#1;havoc main_~p~0#1;havoc main_~q~0#1;havoc main_~r~0#1;havoc main_~h~0#1;havoc main_#t~nondet0#1;main_~n~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := 0;main_~q~0#1 := 1;main_~r~0#1 := main_~n~0#1;main_~h~0#1 := 0; 8#L40true assume main_~q~0#1 > main_~n~0#1; 9#L51-1true [2023-11-29 06:49:55,622 INFO L750 eck$LassoCheckResult]: Loop: 9#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); 9#L51-1true [2023-11-29 06:49:55,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:49:55,626 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2023-11-29 06:49:55,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:49:55,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978623150] [2023-11-29 06:49:55,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:49:55,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:49:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:49:55,700 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:49:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:49:55,718 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 06:49:55,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:49:55,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1420, now seen corresponding path program 1 times [2023-11-29 06:49:55,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:49:55,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781072107] [2023-11-29 06:49:55,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:49:55,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:49:55,729 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:49:55,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1790154224] [2023-11-29 06:49:55,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:49:55,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:49:55,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0783a3ed-a09f-4e29-aecc-eb50acef57d5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:49:55,734 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0783a3ed-a09f-4e29-aecc-eb50acef57d5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:49:55,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0783a3ed-a09f-4e29-aecc-eb50acef57d5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:49:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:49:55,773 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:49:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:49:55,783 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 06:49:55,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:49:55,785 INFO L85 PathProgramCache]: Analyzing trace with hash 28693997, now seen corresponding path program 1 times [2023-11-29 06:49:55,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:49:55,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885595988] [2023-11-29 06:49:55,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:49:55,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:49:55,794 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:49:55,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1500059042] [2023-11-29 06:49:55,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:49:55,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:49:55,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0783a3ed-a09f-4e29-aecc-eb50acef57d5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:49:55,835 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0783a3ed-a09f-4e29-aecc-eb50acef57d5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:49:55,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0783a3ed-a09f-4e29-aecc-eb50acef57d5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:49:55,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:49:55,887 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:49:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:49:55,897 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 06:50:08,143 WARN L293 SmtUtils]: Spent 12.24s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-29 06:50:20,588 WARN L293 SmtUtils]: Spent 12.05s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 06:50:32,679 WARN L293 SmtUtils]: Spent 12.08s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 302] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-29 06:50:46,745 WARN L293 SmtUtils]: Spent 12.16s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 06:50:46,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:50:46,756 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:50:46,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:50:46,783 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 06:50:46 BoogieIcfgContainer [2023-11-29 06:50:46,783 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-29 06:50:46,783 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 06:50:46,784 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 06:50:46,784 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 06:50:46,784 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:49:55" (3/4) ... [2023-11-29 06:50:46,786 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-29 06:50:46,824 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0783a3ed-a09f-4e29-aecc-eb50acef57d5/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 06:50:46,824 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 06:50:46,826 INFO L158 Benchmark]: Toolchain (without parser) took 51826.98ms. Allocated memory is still 190.8MB. Free memory was 161.2MB in the beginning and 113.8MB in the end (delta: 47.4MB). Peak memory consumption was 45.3MB. Max. memory is 16.1GB. [2023-11-29 06:50:46,826 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 125.8MB. Free memory is still 98.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 06:50:46,827 INFO L158 Benchmark]: CACSL2BoogieTranslator took 188.25ms. Allocated memory is still 190.8MB. Free memory was 161.0MB in the beginning and 154.9MB in the end (delta: 6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 06:50:46,827 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.53ms. Allocated memory is still 190.8MB. Free memory was 154.9MB in the beginning and 153.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 06:50:46,828 INFO L158 Benchmark]: Boogie Preprocessor took 28.98ms. Allocated memory is still 190.8MB. Free memory was 153.7MB in the beginning and 152.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 06:50:46,829 INFO L158 Benchmark]: RCFGBuilder took 284.75ms. Allocated memory is still 190.8MB. Free memory was 152.6MB in the beginning and 157.8MB in the end (delta: -5.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 06:50:46,829 INFO L158 Benchmark]: BuchiAutomizer took 51247.81ms. Allocated memory is still 190.8MB. Free memory was 157.8MB in the beginning and 115.7MB in the end (delta: 42.1MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2023-11-29 06:50:46,830 INFO L158 Benchmark]: Witness Printer took 41.20ms. Allocated memory is still 190.8MB. Free memory was 114.7MB in the beginning and 113.8MB in the end (delta: 971.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 06:50:46,833 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 125.8MB. Free memory is still 98.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 188.25ms. Allocated memory is still 190.8MB. Free memory was 161.0MB in the beginning and 154.9MB in the end (delta: 6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.53ms. Allocated memory is still 190.8MB. Free memory was 154.9MB in the beginning and 153.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.98ms. Allocated memory is still 190.8MB. Free memory was 153.7MB in the beginning and 152.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 284.75ms. Allocated memory is still 190.8MB. Free memory was 152.6MB in the beginning and 157.8MB in the end (delta: -5.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 51247.81ms. Allocated memory is still 190.8MB. Free memory was 157.8MB in the beginning and 115.7MB in the end (delta: 42.1MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Witness Printer took 41.20ms. Allocated memory is still 190.8MB. Free memory was 114.7MB in the beginning and 113.8MB in the end (delta: 971.4kB). There was no memory consumed. 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 51.1s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 51.1s. 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! [2023-11-29 06:50:46,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0783a3ed-a09f-4e29-aecc-eb50acef57d5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 06:50:47,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0783a3ed-a09f-4e29-aecc-eb50acef57d5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-29 06:50:47,259 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0783a3ed-a09f-4e29-aecc-eb50acef57d5/bin/uautomizer-verify-BQ2R08f2Ya/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)