./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/NonTerminationSimple7.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c5ddb8-850d-4433-8ecf-d0419d2ca62a/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c5ddb8-850d-4433-8ecf-d0419d2ca62a/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c5ddb8-850d-4433-8ecf-d0419d2ca62a/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c5ddb8-850d-4433-8ecf-d0419d2ca62a/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/NonTerminationSimple7.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c5ddb8-850d-4433-8ecf-d0419d2ca62a/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c5ddb8-850d-4433-8ecf-d0419d2ca62a/bin/uautomizer-verify-4GaUIPS5ZU --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 64bit --witnessprinter.graph.data.programhash 95f92d67113368ce9163571f81d85414539d558535b51b4568b3b416ae740375 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:14:33,593 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:14:33,684 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c5ddb8-850d-4433-8ecf-d0419d2ca62a/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-10-31 22:14:33,689 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:14:33,690 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:14:33,723 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:14:33,725 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:14:33,726 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:14:33,727 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:14:33,728 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:14:33,729 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:14:33,730 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:14:33,730 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:14:33,732 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-31 22:14:33,733 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-31 22:14:33,733 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-31 22:14:33,733 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-31 22:14:33,734 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-31 22:14:33,734 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-31 22:14:33,734 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:14:33,739 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-31 22:14:33,740 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:14:33,740 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:14:33,740 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-31 22:14:33,741 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-31 22:14:33,741 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-31 22:14:33,741 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:14:33,742 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:14:33,742 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:14:33,742 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-31 22:14:33,743 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:14:33,743 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:14:33,743 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:14:33,744 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:14:33,744 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:14:33,745 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-31 22:14:33,745 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_b3c5ddb8-850d-4433-8ecf-d0419d2ca62a/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c5ddb8-850d-4433-8ecf-d0419d2ca62a/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95f92d67113368ce9163571f81d85414539d558535b51b4568b3b416ae740375 [2024-10-31 22:14:34,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:14:34,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:14:34,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:14:34,047 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:14:34,047 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:14:34,049 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c5ddb8-850d-4433-8ecf-d0419d2ca62a/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/termination-crafted/NonTerminationSimple7.c Unable to find full path for "g++" [2024-10-31 22:14:36,057 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:14:36,232 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:14:36,233 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c5ddb8-850d-4433-8ecf-d0419d2ca62a/sv-benchmarks/c/termination-crafted/NonTerminationSimple7.c [2024-10-31 22:14:36,239 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c5ddb8-850d-4433-8ecf-d0419d2ca62a/bin/uautomizer-verify-4GaUIPS5ZU/data/2bc659209/091499b1122d4ee3b2ef6bfd9e8a5382/FLAGdad7910cd [2024-10-31 22:14:36,260 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c5ddb8-850d-4433-8ecf-d0419d2ca62a/bin/uautomizer-verify-4GaUIPS5ZU/data/2bc659209/091499b1122d4ee3b2ef6bfd9e8a5382 [2024-10-31 22:14:36,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:14:36,264 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:14:36,265 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:14:36,266 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:14:36,273 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:14:36,274 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:14:36" (1/1) ... [2024-10-31 22:14:36,275 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a5d6670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:36, skipping insertion in model container [2024-10-31 22:14:36,275 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:14:36" (1/1) ... [2024-10-31 22:14:36,293 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:14:36,516 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:14:36,523 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:14:36,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:14:36,556 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:14:36,557 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:36 WrapperNode [2024-10-31 22:14:36,557 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:14:36,558 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:14:36,558 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:14:36,559 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:14:36,567 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:36" (1/1) ... [2024-10-31 22:14:36,570 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:36" (1/1) ... [2024-10-31 22:14:36,586 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2024-10-31 22:14:36,586 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:14:36,587 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:14:36,587 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:14:36,587 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:14:36,600 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:36" (1/1) ... [2024-10-31 22:14:36,601 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:36" (1/1) ... [2024-10-31 22:14:36,601 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:36" (1/1) ... [2024-10-31 22:14:36,608 INFO L175 MemorySlicer]: No memory access in input program. [2024-10-31 22:14:36,608 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:36" (1/1) ... [2024-10-31 22:14:36,609 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:36" (1/1) ... [2024-10-31 22:14:36,610 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:36" (1/1) ... [2024-10-31 22:14:36,615 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:36" (1/1) ... [2024-10-31 22:14:36,615 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:36" (1/1) ... [2024-10-31 22:14:36,616 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:36" (1/1) ... [2024-10-31 22:14:36,618 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:14:36,620 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:14:36,620 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:14:36,621 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:14:36,622 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:36" (1/1) ... [2024-10-31 22:14:36,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:14:36,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c5ddb8-850d-4433-8ecf-d0419d2ca62a/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:36,656 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c5ddb8-850d-4433-8ecf-d0419d2ca62a/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:14:36,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c5ddb8-850d-4433-8ecf-d0419d2ca62a/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-10-31 22:14:36,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:14:36,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:14:36,783 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:14:36,786 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:14:36,865 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-10-31 22:14:36,866 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:14:36,880 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:14:36,881 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 22:14:36,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:14:36 BoogieIcfgContainer [2024-10-31 22:14:36,881 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:14:36,882 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-31 22:14:36,882 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-31 22:14:36,887 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-31 22:14:36,888 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 22:14:36,888 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 31.10 10:14:36" (1/3) ... [2024-10-31 22:14:36,890 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2055c28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.10 10:14:36, skipping insertion in model container [2024-10-31 22:14:36,891 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 22:14:36,891 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:36" (2/3) ... [2024-10-31 22:14:36,893 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2055c28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.10 10:14:36, skipping insertion in model container [2024-10-31 22:14:36,893 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 22:14:36,894 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:14:36" (3/3) ... [2024-10-31 22:14:36,895 INFO L332 chiAutomizerObserver]: Analyzing ICFG NonTerminationSimple7.c [2024-10-31 22:14:36,972 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-31 22:14:36,973 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-31 22:14:36,973 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-31 22:14:36,973 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-31 22:14:36,973 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-31 22:14:36,973 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-31 22:14:36,974 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-31 22:14:36,974 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-31 22:14:36,980 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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) [2024-10-31 22:14:36,998 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-10-31 22:14:36,999 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:14:37,000 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:14:37,005 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-10-31 22:14:37,006 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2024-10-31 22:14:37,006 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-31 22:14:37,007 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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) [2024-10-31 22:14:37,008 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-10-31 22:14:37,008 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:14:37,008 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:14:37,009 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-10-31 22:14:37,009 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2024-10-31 22:14:37,019 INFO L745 eck$LassoCheckResult]: Stem: 4#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~x~0#1;havoc main_~c~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~c~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 5#L15true assume 0 == main_~c~0#1; 6#L16-2true [2024-10-31 22:14:37,019 INFO L747 eck$LassoCheckResult]: Loop: 6#L16-2true assume !!(main_~x~0#1 >= 0);main_~x~0#1 := main_~x~0#1 + main_~c~0#1; 6#L16-2true [2024-10-31 22:14:37,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:37,026 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2024-10-31 22:14:37,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:37,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950565994] [2024-10-31 22:14:37,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:37,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:37,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:14:37,207 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:14:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:14:37,238 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:14:37,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:37,242 INFO L85 PathProgramCache]: Analyzing trace with hash 45, now seen corresponding path program 1 times [2024-10-31 22:14:37,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:37,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860666187] [2024-10-31 22:14:37,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:37,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:37,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:14:37,261 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:14:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:14:37,266 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:14:37,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:37,268 INFO L85 PathProgramCache]: Analyzing trace with hash 925612, now seen corresponding path program 1 times [2024-10-31 22:14:37,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:37,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146290471] [2024-10-31 22:14:37,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:37,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:37,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:14:37,286 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:14:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:14:37,294 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:14:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:14:37,401 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:14:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:14:37,438 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 31.10 10:14:37 BoogieIcfgContainer [2024-10-31 22:14:37,439 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-10-31 22:14:37,439 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-31 22:14:37,440 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-31 22:14:37,440 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-31 22:14:37,441 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:14:36" (3/4) ... [2024-10-31 22:14:37,444 INFO L139 WitnessPrinter]: Generating witness for non-termination counterexample [2024-10-31 22:14:37,492 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c5ddb8-850d-4433-8ecf-d0419d2ca62a/bin/uautomizer-verify-4GaUIPS5ZU/witness.graphml [2024-10-31 22:14:37,492 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-31 22:14:37,494 INFO L158 Benchmark]: Toolchain (without parser) took 1229.39ms. Allocated memory was 130.0MB in the beginning and 178.3MB in the end (delta: 48.2MB). Free memory was 88.1MB in the beginning and 141.1MB in the end (delta: -53.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:14:37,495 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 104.9MB. Free memory is still 56.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:14:37,495 INFO L158 Benchmark]: CACSL2BoogieTranslator took 292.15ms. Allocated memory is still 130.0MB. Free memory was 87.9MB in the beginning and 76.6MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-31 22:14:37,496 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.18ms. Allocated memory is still 130.0MB. Free memory was 76.6MB in the beginning and 75.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:14:37,497 INFO L158 Benchmark]: Boogie Preprocessor took 31.12ms. Allocated memory is still 130.0MB. Free memory was 75.4MB in the beginning and 73.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 22:14:37,498 INFO L158 Benchmark]: RCFGBuilder took 261.35ms. Allocated memory is still 130.0MB. Free memory was 73.7MB in the beginning and 65.7MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-10-31 22:14:37,498 INFO L158 Benchmark]: BuchiAutomizer took 556.40ms. Allocated memory was 130.0MB in the beginning and 178.3MB in the end (delta: 48.2MB). Free memory was 65.3MB in the beginning and 142.1MB in the end (delta: -76.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:14:37,499 INFO L158 Benchmark]: Witness Printer took 52.95ms. Allocated memory is still 178.3MB. Free memory was 142.1MB in the beginning and 141.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:14:37,506 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 104.9MB. Free memory is still 56.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 292.15ms. Allocated memory is still 130.0MB. Free memory was 87.9MB in the beginning and 76.6MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.18ms. Allocated memory is still 130.0MB. Free memory was 76.6MB in the beginning and 75.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.12ms. Allocated memory is still 130.0MB. Free memory was 75.4MB in the beginning and 73.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 261.35ms. Allocated memory is still 130.0MB. Free memory was 73.7MB in the beginning and 65.7MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 556.40ms. Allocated memory was 130.0MB in the beginning and 178.3MB in the end (delta: 48.2MB). Free memory was 65.3MB in the beginning and 142.1MB in the end (delta: -76.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 52.95ms. Allocated memory is still 178.3MB. Free memory was 142.1MB in the beginning and 141.1MB in the end (delta: 1.0MB). 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 0.4s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. 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: 16]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L12] int c, x; [L13] x = __VERIFIER_nondet_int() [L14] c = __VERIFIER_nondet_int() [L15] COND TRUE c == 0 VAL [c=0] Loop: [L16] COND TRUE x >= 0 [L17] x = x + c End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 16]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L12] int c, x; [L13] x = __VERIFIER_nondet_int() [L14] c = __VERIFIER_nondet_int() [L15] COND TRUE c == 0 VAL [c=0] Loop: [L16] COND TRUE x >= 0 [L17] x = x + c End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2024-10-31 22:14:37,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c5ddb8-850d-4433-8ecf-d0419d2ca62a/bin/uautomizer-verify-4GaUIPS5ZU/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)