./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/ConvLower.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_8039c25a-cab6-42a0-ad03-38b90c7eb20c/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8039c25a-cab6-42a0-ad03-38b90c7eb20c/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_8039c25a-cab6-42a0-ad03-38b90c7eb20c/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8039c25a-cab6-42a0-ad03-38b90c7eb20c/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/ConvLower.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8039c25a-cab6-42a0-ad03-38b90c7eb20c/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_8039c25a-cab6-42a0-ad03-38b90c7eb20c/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 53380e8569c70a1efdb918ce9289975051e88fe57ba0743af14839dd30306283 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:02:43,316 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:02:43,441 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8039c25a-cab6-42a0-ad03-38b90c7eb20c/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-06 23:02:43,447 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:02:43,448 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:02:43,478 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:02:43,478 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:02:43,479 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:02:43,480 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:02:43,480 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:02:43,481 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:02:43,482 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-06 23:02:43,482 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-06 23:02:43,483 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-06 23:02:43,483 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-06 23:02:43,484 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-06 23:02:43,484 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-06 23:02:43,485 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:02:43,486 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-06 23:02:43,486 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:02:43,487 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:02:43,487 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-06 23:02:43,488 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-06 23:02:43,489 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-06 23:02:43,489 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:02:43,490 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:02:43,490 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-06 23:02:43,491 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:02:43,491 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:02:43,492 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:02:43,492 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:02:43,493 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:02:43,494 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-06 23:02:43,494 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_8039c25a-cab6-42a0-ad03-38b90c7eb20c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8039c25a-cab6-42a0-ad03-38b90c7eb20c/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53380e8569c70a1efdb918ce9289975051e88fe57ba0743af14839dd30306283 [2023-11-06 23:02:43,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:02:43,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:02:43,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:02:43,744 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:02:43,744 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:02:43,745 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8039c25a-cab6-42a0-ad03-38b90c7eb20c/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/termination-restricted-15/ConvLower.c [2023-11-06 23:02:46,766 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:02:47,071 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:02:47,071 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8039c25a-cab6-42a0-ad03-38b90c7eb20c/sv-benchmarks/c/termination-restricted-15/ConvLower.c [2023-11-06 23:02:47,078 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8039c25a-cab6-42a0-ad03-38b90c7eb20c/bin/uautomizer-verify-WvqO1wxjHP/data/9fc98a076/37d621feb53a4695bbde70f5bd3598a3/FLAG955b7b238 [2023-11-06 23:02:47,095 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8039c25a-cab6-42a0-ad03-38b90c7eb20c/bin/uautomizer-verify-WvqO1wxjHP/data/9fc98a076/37d621feb53a4695bbde70f5bd3598a3 [2023-11-06 23:02:47,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:02:47,108 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:02:47,110 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:02:47,110 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:02:47,116 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:02:47,116 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:02:47" (1/1) ... [2023-11-06 23:02:47,119 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40032109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:47, skipping insertion in model container [2023-11-06 23:02:47,119 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:02:47" (1/1) ... [2023-11-06 23:02:47,141 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:02:47,301 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:02:47,306 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:02:47,319 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:02:47,334 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:02:47,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:47 WrapperNode [2023-11-06 23:02:47,334 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:02:47,336 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:02:47,336 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:02:47,337 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:02:47,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:47" (1/1) ... [2023-11-06 23:02:47,348 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:47" (1/1) ... [2023-11-06 23:02:47,367 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 14 [2023-11-06 23:02:47,367 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:02:47,368 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:02:47,368 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:02:47,368 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:02:47,377 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:47" (1/1) ... [2023-11-06 23:02:47,378 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:47" (1/1) ... [2023-11-06 23:02:47,379 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:47" (1/1) ... [2023-11-06 23:02:47,379 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:47" (1/1) ... [2023-11-06 23:02:47,381 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:47" (1/1) ... [2023-11-06 23:02:47,385 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:47" (1/1) ... [2023-11-06 23:02:47,386 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:47" (1/1) ... [2023-11-06 23:02:47,387 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:47" (1/1) ... [2023-11-06 23:02:47,388 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:02:47,391 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:02:47,391 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:02:47,391 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:02:47,392 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:47" (1/1) ... [2023-11-06 23:02:47,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:02:47,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8039c25a-cab6-42a0-ad03-38b90c7eb20c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:02:47,428 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8039c25a-cab6-42a0-ad03-38b90c7eb20c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:02:47,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8039c25a-cab6-42a0-ad03-38b90c7eb20c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-06 23:02:47,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:02:47,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:02:47,542 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:02:47,543 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:02:47,603 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:02:47,609 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:02:47,610 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 23:02:47,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:02:47 BoogieIcfgContainer [2023-11-06 23:02:47,612 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:02:47,613 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-06 23:02:47,613 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-06 23:02:47,617 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-06 23:02:47,618 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 23:02:47,619 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.11 11:02:47" (1/3) ... [2023-11-06 23:02:47,620 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7d8f70db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 11:02:47, skipping insertion in model container [2023-11-06 23:02:47,620 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 23:02:47,620 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:47" (2/3) ... [2023-11-06 23:02:47,620 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7d8f70db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 11:02:47, skipping insertion in model container [2023-11-06 23:02:47,621 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 23:02:47,621 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:02:47" (3/3) ... [2023-11-06 23:02:47,622 INFO L332 chiAutomizerObserver]: Analyzing ICFG ConvLower.c [2023-11-06 23:02:47,680 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-06 23:02:47,680 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-06 23:02:47,681 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-06 23:02:47,681 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-06 23:02:47,681 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-06 23:02:47,681 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-06 23:02:47,681 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-06 23:02:47,681 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-06 23:02:47,685 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) [2023-11-06 23:02:47,702 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-06 23:02:47,702 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:02:47,703 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:02:47,708 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 23:02:47,708 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-06 23:02:47,708 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-06 23:02:47,709 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) [2023-11-06 23:02:47,710 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-06 23:02:47,710 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:02:47,710 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:02:47,710 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 23:02:47,711 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-06 23:02:47,718 INFO L748 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 3#L10-2true [2023-11-06 23:02:47,719 INFO L750 eck$LassoCheckResult]: Loop: 3#L10-2true assume !!(main_~i~0#1 > 5); 5#L10true assume !(10 != main_~i~0#1); 3#L10-2true [2023-11-06 23:02:47,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:47,725 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-06 23:02:47,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:47,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47271391] [2023-11-06 23:02:47,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:47,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:47,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:02:47,816 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:02:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:02:47,833 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:02:47,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:47,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2023-11-06 23:02:47,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:47,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72326799] [2023-11-06 23:02:47,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:47,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:02:47,844 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:02:47,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:02:47,848 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:02:47,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:47,850 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2023-11-06 23:02:47,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:47,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176477459] [2023-11-06 23:02:47,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:47,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:02:47,857 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:02:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:02:47,862 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:02:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:02:47,928 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:02:47,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:02:47,956 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.11 11:02:47 BoogieIcfgContainer [2023-11-06 23:02:47,957 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-06 23:02:47,958 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 23:02:47,958 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 23:02:47,958 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 23:02:47,958 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:02:47" (3/4) ... [2023-11-06 23:02:47,960 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-06 23:02:47,991 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8039c25a-cab6-42a0-ad03-38b90c7eb20c/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 23:02:47,991 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 23:02:47,993 INFO L158 Benchmark]: Toolchain (without parser) took 884.32ms. Allocated memory is still 159.4MB. Free memory was 129.6MB in the beginning and 92.4MB in the end (delta: 37.2MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2023-11-06 23:02:47,993 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 121.6MB. Free memory was 82.5MB in the beginning and 82.3MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:02:47,994 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.07ms. Allocated memory is still 159.4MB. Free memory was 129.3MB in the beginning and 120.2MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 23:02:47,995 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.32ms. Allocated memory is still 159.4MB. Free memory was 120.2MB in the beginning and 119.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:02:47,995 INFO L158 Benchmark]: Boogie Preprocessor took 19.85ms. Allocated memory is still 159.4MB. Free memory was 119.0MB in the beginning and 117.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:02:47,996 INFO L158 Benchmark]: RCFGBuilder took 221.27ms. Allocated memory is still 159.4MB. Free memory was 117.9MB in the beginning and 109.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 23:02:47,997 INFO L158 Benchmark]: BuchiAutomizer took 343.79ms. Allocated memory is still 159.4MB. Free memory was 109.5MB in the beginning and 94.1MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-06 23:02:47,997 INFO L158 Benchmark]: Witness Printer took 33.44ms. Allocated memory is still 159.4MB. Free memory was 93.8MB in the beginning and 92.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:02:48,001 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 121.6MB. Free memory was 82.5MB in the beginning and 82.3MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 225.07ms. Allocated memory is still 159.4MB. Free memory was 129.3MB in the beginning and 120.2MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.32ms. Allocated memory is still 159.4MB. Free memory was 120.2MB in the beginning and 119.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.85ms. Allocated memory is still 159.4MB. Free memory was 119.0MB in the beginning and 117.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 221.27ms. Allocated memory is still 159.4MB. Free memory was 117.9MB in the beginning and 109.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 343.79ms. Allocated memory is still 159.4MB. Free memory was 109.5MB in the beginning and 94.1MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 33.44ms. Allocated memory is still 159.4MB. Free memory was 93.8MB in the beginning and 92.4MB in the end (delta: 1.4MB). 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 0.2s 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: 9]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() Loop: [L9] COND TRUE i > 5 [L10] COND FALSE !(i != 10) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() Loop: [L9] COND TRUE i > 5 [L10] COND FALSE !(i != 10) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-06 23:02:48,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8039c25a-cab6-42a0-ad03-38b90c7eb20c/bin/uautomizer-verify-WvqO1wxjHP/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)