./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 9bd2c7ff 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_a4d3e4e9-9344-4f8f-894b-94ee57735ead/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3e4e9-9344-4f8f-894b-94ee57735ead/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3e4e9-9344-4f8f-894b-94ee57735ead/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3e4e9-9344-4f8f-894b-94ee57735ead/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/NonTerminationSimple7.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3e4e9-9344-4f8f-894b-94ee57735ead/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3e4e9-9344-4f8f-894b-94ee57735ead/bin/uautomizer-verify-uCwYo4JHxu --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 0.2.3-dev-9bd2c7f [2023-11-19 07:49:37,400 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:49:37,496 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3e4e9-9344-4f8f-894b-94ee57735ead/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-19 07:49:37,501 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:49:37,502 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:49:37,550 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:49:37,550 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:49:37,551 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:49:37,552 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:49:37,553 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:49:37,553 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:49:37,554 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-19 07:49:37,554 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-19 07:49:37,555 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-19 07:49:37,555 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-19 07:49:37,556 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-19 07:49:37,557 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-19 07:49:37,557 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:49:37,558 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-19 07:49:37,558 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:49:37,559 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:49:37,560 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-19 07:49:37,560 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-19 07:49:37,561 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-19 07:49:37,561 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:49:37,562 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:49:37,562 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-19 07:49:37,563 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:49:37,563 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:49:37,563 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:49:37,564 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:49:37,565 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:49:37,565 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-19 07:49:37,584 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_a4d3e4e9-9344-4f8f-894b-94ee57735ead/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3e4e9-9344-4f8f-894b-94ee57735ead/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95f92d67113368ce9163571f81d85414539d558535b51b4568b3b416ae740375 [2023-11-19 07:49:37,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:49:37,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:49:37,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:49:37,924 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:49:37,926 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:49:37,928 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3e4e9-9344-4f8f-894b-94ee57735ead/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/termination-crafted/NonTerminationSimple7.c [2023-11-19 07:49:41,038 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:49:41,294 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:49:41,295 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3e4e9-9344-4f8f-894b-94ee57735ead/sv-benchmarks/c/termination-crafted/NonTerminationSimple7.c [2023-11-19 07:49:41,306 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3e4e9-9344-4f8f-894b-94ee57735ead/bin/uautomizer-verify-uCwYo4JHxu/data/e5dfe22da/540a1069c2a74e8998f32589c4bd5bff/FLAG40022dcbc [2023-11-19 07:49:41,326 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3e4e9-9344-4f8f-894b-94ee57735ead/bin/uautomizer-verify-uCwYo4JHxu/data/e5dfe22da/540a1069c2a74e8998f32589c4bd5bff [2023-11-19 07:49:41,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:49:41,330 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:49:41,332 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:49:41,332 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:49:41,338 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:49:41,339 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:49:41" (1/1) ... [2023-11-19 07:49:41,341 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b7ecbc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:41, skipping insertion in model container [2023-11-19 07:49:41,341 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:49:41" (1/1) ... [2023-11-19 07:49:41,362 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:49:41,504 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:49:41,510 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:49:41,521 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:49:41,534 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:49:41,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:41 WrapperNode [2023-11-19 07:49:41,535 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:49:41,536 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:49:41,536 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:49:41,536 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:49:41,545 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:41" (1/1) ... [2023-11-19 07:49:41,550 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:41" (1/1) ... [2023-11-19 07:49:41,575 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2023-11-19 07:49:41,576 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:49:41,577 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:49:41,578 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:49:41,578 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:49:41,588 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:41" (1/1) ... [2023-11-19 07:49:41,589 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:41" (1/1) ... [2023-11-19 07:49:41,589 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:41" (1/1) ... [2023-11-19 07:49:41,590 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:41" (1/1) ... [2023-11-19 07:49:41,591 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:41" (1/1) ... [2023-11-19 07:49:41,598 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:41" (1/1) ... [2023-11-19 07:49:41,600 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:41" (1/1) ... [2023-11-19 07:49:41,601 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:41" (1/1) ... [2023-11-19 07:49:41,603 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:49:41,609 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:49:41,610 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:49:41,610 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:49:41,612 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:41" (1/1) ... [2023-11-19 07:49:41,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:49:41,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3e4e9-9344-4f8f-894b-94ee57735ead/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:41,648 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3e4e9-9344-4f8f-894b-94ee57735ead/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:49:41,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3e4e9-9344-4f8f-894b-94ee57735ead/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-19 07:49:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:49:41,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:49:41,794 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:49:41,798 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:49:41,895 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:49:41,903 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:49:41,903 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:49:41,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:41 BoogieIcfgContainer [2023-11-19 07:49:41,907 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:49:41,908 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-19 07:49:41,908 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-19 07:49:41,912 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-19 07:49:41,913 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:49:41,913 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 07:49:41" (1/3) ... [2023-11-19 07:49:41,914 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4a0c790b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 07:49:41, skipping insertion in model container [2023-11-19 07:49:41,914 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:49:41,914 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:41" (2/3) ... [2023-11-19 07:49:41,915 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4a0c790b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 07:49:41, skipping insertion in model container [2023-11-19 07:49:41,915 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:49:41,915 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:41" (3/3) ... [2023-11-19 07:49:41,916 INFO L332 chiAutomizerObserver]: Analyzing ICFG NonTerminationSimple7.c [2023-11-19 07:49:41,970 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-19 07:49:41,970 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-19 07:49:41,971 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-19 07:49:41,971 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-19 07:49:41,971 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-19 07:49:41,971 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-19 07:49:41,971 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-19 07:49:41,972 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-19 07:49:41,976 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) [2023-11-19 07:49:41,994 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-19 07:49:41,994 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:49:41,994 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:49:41,998 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-19 07:49:41,998 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-11-19 07:49:41,998 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-19 07:49:41,999 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) [2023-11-19 07:49:41,999 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-19 07:49:42,000 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:49:42,000 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:49:42,000 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-19 07:49:42,000 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-11-19 07:49:42,007 INFO L748 eck$LassoCheckResult]: Stem: 4#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~x~0#1;havoc main_~c~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~c~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 5#L15true assume 0 == main_~c~0#1; 6#L16-2true [2023-11-19 07:49:42,007 INFO L750 eck$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 [2023-11-19 07:49:42,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:42,013 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2023-11-19 07:49:42,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:42,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867856496] [2023-11-19 07:49:42,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:42,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:49:42,115 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:49:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:49:42,137 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:49:42,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:42,141 INFO L85 PathProgramCache]: Analyzing trace with hash 45, now seen corresponding path program 1 times [2023-11-19 07:49:42,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:42,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856352013] [2023-11-19 07:49:42,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:42,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:49:42,153 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:49:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:49:42,159 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:49:42,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:42,161 INFO L85 PathProgramCache]: Analyzing trace with hash 925612, now seen corresponding path program 1 times [2023-11-19 07:49:42,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:42,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64839468] [2023-11-19 07:49:42,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:42,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:49:42,171 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:49:42,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:49:42,178 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:49:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:49:42,268 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:49:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:49:42,320 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 07:49:42 BoogieIcfgContainer [2023-11-19 07:49:42,320 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-19 07:49:42,321 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:49:42,321 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:49:42,322 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:49:42,322 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:41" (3/4) ... [2023-11-19 07:49:42,325 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-19 07:49:42,380 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3e4e9-9344-4f8f-894b-94ee57735ead/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:49:42,380 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:49:42,382 INFO L158 Benchmark]: Toolchain (without parser) took 1050.92ms. Allocated memory is still 174.1MB. Free memory was 143.2MB in the beginning and 121.2MB in the end (delta: 22.0MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. [2023-11-19 07:49:42,383 INFO L158 Benchmark]: CDTParser took 0.54ms. Allocated memory is still 130.0MB. Free memory is still 101.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:49:42,385 INFO L158 Benchmark]: CACSL2BoogieTranslator took 203.29ms. Allocated memory is still 174.1MB. Free memory was 143.0MB in the beginning and 137.6MB in the end (delta: 5.4MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. [2023-11-19 07:49:42,386 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.36ms. Allocated memory is still 174.1MB. Free memory was 137.6MB in the beginning and 136.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:49:42,388 INFO L158 Benchmark]: Boogie Preprocessor took 31.00ms. Allocated memory is still 174.1MB. Free memory was 136.0MB in the beginning and 134.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:49:42,390 INFO L158 Benchmark]: RCFGBuilder took 297.60ms. Allocated memory is still 174.1MB. Free memory was 134.4MB in the beginning and 140.7MB in the end (delta: -6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 07:49:42,394 INFO L158 Benchmark]: BuchiAutomizer took 412.74ms. Allocated memory is still 174.1MB. Free memory was 140.7MB in the beginning and 123.0MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 07:49:42,395 INFO L158 Benchmark]: Witness Printer took 59.04ms. Allocated memory is still 174.1MB. Free memory was 123.0MB in the beginning and 121.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:49:42,406 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54ms. Allocated memory is still 130.0MB. Free memory is still 101.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 203.29ms. Allocated memory is still 174.1MB. Free memory was 143.0MB in the beginning and 137.6MB in the end (delta: 5.4MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.36ms. Allocated memory is still 174.1MB. Free memory was 137.6MB in the beginning and 136.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.00ms. Allocated memory is still 174.1MB. Free memory was 136.0MB in the beginning and 134.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 297.60ms. Allocated memory is still 174.1MB. Free memory was 134.4MB in the beginning and 140.7MB in the end (delta: -6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 412.74ms. Allocated memory is still 174.1MB. Free memory was 140.7MB in the beginning and 123.0MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 59.04ms. Allocated memory is still 174.1MB. Free memory was 123.0MB in the beginning and 121.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 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: 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! [2023-11-19 07:49:42,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3e4e9-9344-4f8f-894b-94ee57735ead/bin/uautomizer-verify-uCwYo4JHxu/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)