./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/Division-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e7bb482b 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_9ef35890-09d8-4c28-88a9-f5c2ef9444b9/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ef35890-09d8-4c28-88a9-f5c2ef9444b9/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ef35890-09d8-4c28-88a9-f5c2ef9444b9/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ef35890-09d8-4c28-88a9-f5c2ef9444b9/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Division-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ef35890-09d8-4c28-88a9-f5c2ef9444b9/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ef35890-09d8-4c28-88a9-f5c2ef9444b9/bin/uautomizer-verify-WvqO1wxjHP --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 64bit --witnessprinter.graph.data.programhash bcd985be4d5b056143625ede780ed1bdcfd1a69390fda6644aa25539fa51e5a7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:16:36,067 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:16:36,133 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ef35890-09d8-4c28-88a9-f5c2ef9444b9/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-06 22:16:36,139 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:16:36,140 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:16:36,166 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:16:36,167 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:16:36,168 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:16:36,169 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:16:36,170 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:16:36,170 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:16:36,171 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-06 22:16:36,172 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-06 22:16:36,172 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-06 22:16:36,173 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-06 22:16:36,173 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-06 22:16:36,174 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-06 22:16:36,175 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:16:36,175 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-06 22:16:36,176 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:16:36,176 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:16:36,177 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-06 22:16:36,177 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-06 22:16:36,178 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-06 22:16:36,178 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:16:36,179 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:16:36,179 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-06 22:16:36,180 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:16:36,180 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:16:36,181 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:16:36,181 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:16:36,182 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:16:36,182 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-06 22:16:36,183 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_9ef35890-09d8-4c28-88a9-f5c2ef9444b9/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ef35890-09d8-4c28-88a9-f5c2ef9444b9/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcd985be4d5b056143625ede780ed1bdcfd1a69390fda6644aa25539fa51e5a7 [2023-11-06 22:16:36,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:16:36,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:16:36,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:16:36,547 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:16:36,548 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:16:36,550 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ef35890-09d8-4c28-88a9-f5c2ef9444b9/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/termination-crafted/Division-2.c [2023-11-06 22:16:39,574 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:16:39,806 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:16:39,806 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ef35890-09d8-4c28-88a9-f5c2ef9444b9/sv-benchmarks/c/termination-crafted/Division-2.c [2023-11-06 22:16:39,814 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ef35890-09d8-4c28-88a9-f5c2ef9444b9/bin/uautomizer-verify-WvqO1wxjHP/data/ad2106e6d/1c98835bee6940859b9f657b818b92d5/FLAGdba516e60 [2023-11-06 22:16:39,832 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ef35890-09d8-4c28-88a9-f5c2ef9444b9/bin/uautomizer-verify-WvqO1wxjHP/data/ad2106e6d/1c98835bee6940859b9f657b818b92d5 [2023-11-06 22:16:39,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:16:39,841 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:16:39,846 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:16:39,846 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:16:39,851 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:16:39,855 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:16:39" (1/1) ... [2023-11-06 22:16:39,857 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fec119d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:39, skipping insertion in model container [2023-11-06 22:16:39,857 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:16:39" (1/1) ... [2023-11-06 22:16:39,877 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:16:40,030 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:16:40,036 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:16:40,049 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:16:40,063 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:16:40,064 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:40 WrapperNode [2023-11-06 22:16:40,064 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:16:40,065 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:16:40,066 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:16:40,066 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:16:40,074 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:40" (1/1) ... [2023-11-06 22:16:40,078 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:40" (1/1) ... [2023-11-06 22:16:40,094 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 12 [2023-11-06 22:16:40,094 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:16:40,095 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:16:40,095 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:16:40,096 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:16:40,103 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:40" (1/1) ... [2023-11-06 22:16:40,103 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:40" (1/1) ... [2023-11-06 22:16:40,104 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:40" (1/1) ... [2023-11-06 22:16:40,104 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:40" (1/1) ... [2023-11-06 22:16:40,106 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:40" (1/1) ... [2023-11-06 22:16:40,109 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:40" (1/1) ... [2023-11-06 22:16:40,110 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:40" (1/1) ... [2023-11-06 22:16:40,111 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:40" (1/1) ... [2023-11-06 22:16:40,112 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:16:40,113 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:16:40,114 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:16:40,114 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:16:40,115 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:40" (1/1) ... [2023-11-06 22:16:40,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:40,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ef35890-09d8-4c28-88a9-f5c2ef9444b9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:40,146 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ef35890-09d8-4c28-88a9-f5c2ef9444b9/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:40,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ef35890-09d8-4c28-88a9-f5c2ef9444b9/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-06 22:16:40,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:16:40,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:16:40,254 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:16:40,256 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:16:40,389 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:16:40,395 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:16:40,395 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:16:40,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:16:40 BoogieIcfgContainer [2023-11-06 22:16:40,397 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:16:40,398 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-06 22:16:40,398 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-06 22:16:40,405 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-06 22:16:40,405 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:16:40,406 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.11 10:16:39" (1/3) ... [2023-11-06 22:16:40,407 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2173872f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 10:16:40, skipping insertion in model container [2023-11-06 22:16:40,407 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:16:40,407 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:40" (2/3) ... [2023-11-06 22:16:40,408 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2173872f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 10:16:40, skipping insertion in model container [2023-11-06 22:16:40,408 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:16:40,421 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:16:40" (3/3) ... [2023-11-06 22:16:40,422 INFO L332 chiAutomizerObserver]: Analyzing ICFG Division-2.c [2023-11-06 22:16:40,481 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-06 22:16:40,481 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-06 22:16:40,481 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-06 22:16:40,482 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-06 22:16:40,482 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-06 22:16:40,482 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-06 22:16:40,482 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-06 22:16:40,482 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-06 22:16:40,487 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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) [2023-11-06 22:16:40,504 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-06 22:16:40,505 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:16:40,505 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:16:40,510 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 22:16:40,511 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-11-06 22:16:40,511 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-06 22:16:40,511 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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) [2023-11-06 22:16:40,512 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-06 22:16:40,512 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:16:40,513 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:16:40,513 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 22:16:40,513 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-11-06 22:16:40,521 INFO L748 eck$LassoCheckResult]: Stem: 4#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~y~0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 6#L14-2true [2023-11-06 22:16:40,522 INFO L750 eck$LassoCheckResult]: Loop: 6#L14-2true assume !!(main_~y~0#1 >= 0 && main_~y~0#1 <= 10);main_~y~0#1 := (if 1 + 2 * main_~y~0#1 < 0 && 0 != (1 + 2 * main_~y~0#1) % 2 then 1 + (1 + 2 * main_~y~0#1) / 2 else (1 + 2 * main_~y~0#1) / 2); 6#L14-2true [2023-11-06 22:16:40,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:40,528 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-06 22:16:40,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:40,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308743105] [2023-11-06 22:16:40,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:40,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:16:40,613 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:16:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:16:40,633 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:16:40,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:40,636 INFO L85 PathProgramCache]: Analyzing trace with hash 42, now seen corresponding path program 1 times [2023-11-06 22:16:40,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:40,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030410752] [2023-11-06 22:16:40,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:40,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:16:40,655 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:16:40,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:16:40,662 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:16:40,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:40,664 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-11-06 22:16:40,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:40,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665069647] [2023-11-06 22:16:40,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:40,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:16:40,672 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:16:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:16:40,678 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:16:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:16:40,764 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:16:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:16:40,783 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.11 10:16:40 BoogieIcfgContainer [2023-11-06 22:16:40,783 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-06 22:16:40,784 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:16:40,784 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:16:40,785 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:16:40,785 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:16:40" (3/4) ... [2023-11-06 22:16:40,787 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-06 22:16:40,828 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ef35890-09d8-4c28-88a9-f5c2ef9444b9/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:16:40,829 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:16:40,831 INFO L158 Benchmark]: Toolchain (without parser) took 988.68ms. Allocated memory was 104.9MB in the beginning and 167.8MB in the end (delta: 62.9MB). Free memory was 60.5MB in the beginning and 124.0MB in the end (delta: -63.5MB). Peak memory consumption was 422.3kB. Max. memory is 16.1GB. [2023-11-06 22:16:40,832 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 104.9MB. Free memory is still 77.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:16:40,833 INFO L158 Benchmark]: CACSL2BoogieTranslator took 218.74ms. Allocated memory is still 104.9MB. Free memory was 60.5MB in the beginning and 51.1MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 22:16:40,833 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.46ms. Allocated memory is still 104.9MB. Free memory was 51.1MB in the beginning and 50.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:16:40,834 INFO L158 Benchmark]: Boogie Preprocessor took 17.27ms. Allocated memory is still 104.9MB. Free memory was 50.0MB in the beginning and 49.1MB in the end (delta: 962.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:16:40,834 INFO L158 Benchmark]: RCFGBuilder took 284.02ms. Allocated memory is still 104.9MB. Free memory was 48.7MB in the beginning and 76.3MB in the end (delta: -27.6MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. [2023-11-06 22:16:40,835 INFO L158 Benchmark]: BuchiAutomizer took 385.24ms. Allocated memory was 104.9MB in the beginning and 167.8MB in the end (delta: 62.9MB). Free memory was 76.2MB in the beginning and 125.7MB in the end (delta: -49.5MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2023-11-06 22:16:40,836 INFO L158 Benchmark]: Witness Printer took 44.93ms. Allocated memory is still 167.8MB. Free memory was 124.9MB in the beginning and 124.0MB in the end (delta: 900.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:16:40,839 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 104.9MB. Free memory is still 77.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 218.74ms. Allocated memory is still 104.9MB. Free memory was 60.5MB in the beginning and 51.1MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.46ms. Allocated memory is still 104.9MB. Free memory was 51.1MB in the beginning and 50.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.27ms. Allocated memory is still 104.9MB. Free memory was 50.0MB in the beginning and 49.1MB in the end (delta: 962.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 284.02ms. Allocated memory is still 104.9MB. Free memory was 48.7MB in the beginning and 76.3MB in the end (delta: -27.6MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. * BuchiAutomizer took 385.24ms. Allocated memory was 104.9MB in the beginning and 167.8MB in the end (delta: 62.9MB). Free memory was 76.2MB in the beginning and 125.7MB in the end (delta: -49.5MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. * Witness Printer took 44.93ms. Allocated memory is still 167.8MB. Free memory was 124.9MB in the beginning and 124.0MB in the end (delta: 900.2kB). 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 0.3s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.2s. 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: 14]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L13] int y = __VERIFIER_nondet_int(); Loop: [L14] COND TRUE y >= 0 && y <= 10 [L15] y = (2*y + 1) / 2 End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 14]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L13] int y = __VERIFIER_nondet_int(); Loop: [L14] COND TRUE y >= 0 && y <= 10 [L15] y = (2*y + 1) / 2 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-06 22:16:40,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ef35890-09d8-4c28-88a9-f5c2ef9444b9/bin/uautomizer-verify-WvqO1wxjHP/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)