./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/TwoFloatInterv.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 527bcce2 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_30a7b9de-815c-4e1a-a464-accfb1cda538/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a7b9de-815c-4e1a-a464-accfb1cda538/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a7b9de-815c-4e1a-a464-accfb1cda538/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a7b9de-815c-4e1a-a464-accfb1cda538/bin/uautomizer-verify-bycVGegfSx/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/TwoFloatInterv.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a7b9de-815c-4e1a-a464-accfb1cda538/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a7b9de-815c-4e1a-a464-accfb1cda538/bin/uautomizer-verify-bycVGegfSx --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 619980f24f1306727466f5c616de82a47a9f9fa9949a068930aef8a7aa603b17 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:07:55,435 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:07:55,547 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a7b9de-815c-4e1a-a464-accfb1cda538/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-21 22:07:55,556 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:07:55,557 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:07:55,599 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:07:55,600 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:07:55,600 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:07:55,601 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:07:55,606 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:07:55,608 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:07:55,609 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:07:55,609 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:07:55,611 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-21 22:07:55,612 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-21 22:07:55,612 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-21 22:07:55,613 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-21 22:07:55,613 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-21 22:07:55,614 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-21 22:07:55,614 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:07:55,615 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-21 22:07:55,615 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:07:55,616 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:07:55,616 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-21 22:07:55,617 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-21 22:07:55,617 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-21 22:07:55,618 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:07:55,618 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:07:55,619 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-21 22:07:55,619 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:07:55,621 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:07:55,621 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:07:55,621 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:07:55,622 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:07:55,622 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-21 22:07:55,623 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_30a7b9de-815c-4e1a-a464-accfb1cda538/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a7b9de-815c-4e1a-a464-accfb1cda538/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 619980f24f1306727466f5c616de82a47a9f9fa9949a068930aef8a7aa603b17 [2023-11-21 22:07:55,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:07:55,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:07:55,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:07:55,974 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:07:55,974 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:07:55,976 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a7b9de-815c-4e1a-a464-accfb1cda538/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/termination-restricted-15/TwoFloatInterv.c [2023-11-21 22:07:59,036 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:07:59,303 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:07:59,304 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a7b9de-815c-4e1a-a464-accfb1cda538/sv-benchmarks/c/termination-restricted-15/TwoFloatInterv.c [2023-11-21 22:07:59,312 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a7b9de-815c-4e1a-a464-accfb1cda538/bin/uautomizer-verify-bycVGegfSx/data/ad59a1333/b5beea3758b145efa91be3cccb2a9f27/FLAG39feb09a3 [2023-11-21 22:07:59,336 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a7b9de-815c-4e1a-a464-accfb1cda538/bin/uautomizer-verify-bycVGegfSx/data/ad59a1333/b5beea3758b145efa91be3cccb2a9f27 [2023-11-21 22:07:59,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:07:59,344 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:07:59,347 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:07:59,348 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:07:59,354 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:07:59,354 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:07:59" (1/1) ... [2023-11-21 22:07:59,356 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57fded48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:59, skipping insertion in model container [2023-11-21 22:07:59,356 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:07:59" (1/1) ... [2023-11-21 22:07:59,380 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:07:59,546 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:07:59,551 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:07:59,561 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:07:59,574 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:07:59,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:59 WrapperNode [2023-11-21 22:07:59,574 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:07:59,575 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:07:59,576 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:07:59,576 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:07:59,583 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:59" (1/1) ... [2023-11-21 22:07:59,587 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:59" (1/1) ... [2023-11-21 22:07:59,604 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2023-11-21 22:07:59,604 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:07:59,605 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:07:59,605 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:07:59,606 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:07:59,616 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:59" (1/1) ... [2023-11-21 22:07:59,617 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:59" (1/1) ... [2023-11-21 22:07:59,617 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:59" (1/1) ... [2023-11-21 22:07:59,623 INFO L187 HeapSplitter]: Split 0 memory accesses to 0 slices as follows [] [2023-11-21 22:07:59,623 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:59" (1/1) ... [2023-11-21 22:07:59,624 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:59" (1/1) ... [2023-11-21 22:07:59,628 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:59" (1/1) ... [2023-11-21 22:07:59,632 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:59" (1/1) ... [2023-11-21 22:07:59,633 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:59" (1/1) ... [2023-11-21 22:07:59,634 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:59" (1/1) ... [2023-11-21 22:07:59,635 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:07:59,636 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:07:59,636 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:07:59,636 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:07:59,637 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:59" (1/1) ... [2023-11-21 22:07:59,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:07:59,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a7b9de-815c-4e1a-a464-accfb1cda538/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:07:59,666 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a7b9de-815c-4e1a-a464-accfb1cda538/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:07:59,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a7b9de-815c-4e1a-a464-accfb1cda538/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-21 22:07:59,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:07:59,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:07:59,810 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:07:59,812 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:07:59,904 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:07:59,914 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:07:59,915 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 22:07:59,917 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:07:59 BoogieIcfgContainer [2023-11-21 22:07:59,917 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:07:59,918 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-21 22:07:59,918 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-21 22:07:59,922 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-21 22:07:59,923 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-21 22:07:59,924 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.11 10:07:59" (1/3) ... [2023-11-21 22:07:59,925 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2da33a57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 10:07:59, skipping insertion in model container [2023-11-21 22:07:59,925 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-21 22:07:59,925 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:59" (2/3) ... [2023-11-21 22:07:59,926 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2da33a57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 10:07:59, skipping insertion in model container [2023-11-21 22:07:59,926 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-21 22:07:59,926 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:07:59" (3/3) ... [2023-11-21 22:07:59,927 INFO L332 chiAutomizerObserver]: Analyzing ICFG TwoFloatInterv.c [2023-11-21 22:07:59,985 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-21 22:07:59,986 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-21 22:07:59,986 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-21 22:07:59,986 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-21 22:07:59,986 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-21 22:07:59,987 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-21 22:07:59,987 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-21 22:07:59,987 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-21 22:07:59,991 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:00,009 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-21 22:08:00,009 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 22:08:00,010 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 22:08:00,015 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 22:08:00,015 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-21 22:08:00,016 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-21 22:08:00,016 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:00,017 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-21 22:08:00,018 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 22:08:00,018 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 22:08:00,018 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 22:08:00,018 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-21 22:08:00,026 INFO L748 eck$LassoCheckResult]: Stem: 8#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 10#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 3#L16-1true [2023-11-21 22:08:00,027 INFO L750 eck$LassoCheckResult]: Loop: 3#L16-1true assume !!(main_~i~0#1 > 0 && main_~i~0#1 < 50); 7#L10true assume !(main_~i~0#1 < 20); 4#L10-2true assume main_~i~0#1 > 10;main_~i~0#1 := 1 + main_~i~0#1; 5#L13-1true assume 30 <= main_~i~0#1 && main_~i~0#1 <= 40;main_~i~0#1 := main_~i~0#1 - 1; 3#L16-1true [2023-11-21 22:08:00,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:00,033 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-21 22:08:00,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:00,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003373583] [2023-11-21 22:08:00,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:00,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:08:00,123 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:08:00,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:08:00,141 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:08:00,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:00,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1267244, now seen corresponding path program 1 times [2023-11-21 22:08:00,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:00,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566340394] [2023-11-21 22:08:00,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:00,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:08:00,163 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:08:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:08:00,171 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:08:00,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:00,173 INFO L85 PathProgramCache]: Analyzing trace with hash 889694446, now seen corresponding path program 1 times [2023-11-21 22:08:00,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:00,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696669149] [2023-11-21 22:08:00,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:00,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:00,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:08:00,184 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:08:00,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:08:00,193 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:08:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:08:00,349 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:08:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:08:00,372 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.11 10:08:00 BoogieIcfgContainer [2023-11-21 22:08:00,373 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-21 22:08:00,373 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:08:00,374 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:08:00,374 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:08:00,374 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:07:59" (3/4) ... [2023-11-21 22:08:00,376 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-21 22:08:00,411 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a7b9de-815c-4e1a-a464-accfb1cda538/bin/uautomizer-verify-bycVGegfSx/witness.graphml [2023-11-21 22:08:00,411 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:08:00,413 INFO L158 Benchmark]: Toolchain (without parser) took 1068.42ms. Allocated memory is still 165.7MB. Free memory was 137.3MB in the beginning and 95.5MB in the end (delta: 41.8MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2023-11-21 22:08:00,413 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 119.5MB. Free memory was 79.0MB in the beginning and 78.8MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:08:00,414 INFO L158 Benchmark]: CACSL2BoogieTranslator took 227.34ms. Allocated memory is still 165.7MB. Free memory was 136.7MB in the beginning and 127.6MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-21 22:08:00,415 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.28ms. Allocated memory is still 165.7MB. Free memory was 127.6MB in the beginning and 126.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:08:00,415 INFO L158 Benchmark]: Boogie Preprocessor took 29.80ms. Allocated memory is still 165.7MB. Free memory was 126.3MB in the beginning and 124.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:08:00,416 INFO L158 Benchmark]: RCFGBuilder took 281.39ms. Allocated memory is still 165.7MB. Free memory was 124.9MB in the beginning and 115.8MB in the end (delta: 9.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-21 22:08:00,417 INFO L158 Benchmark]: BuchiAutomizer took 454.67ms. Allocated memory is still 165.7MB. Free memory was 115.8MB in the beginning and 97.0MB in the end (delta: 18.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-21 22:08:00,417 INFO L158 Benchmark]: Witness Printer took 37.64ms. Allocated memory is still 165.7MB. Free memory was 97.0MB in the beginning and 95.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:08:00,421 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 119.5MB. Free memory was 79.0MB in the beginning and 78.8MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 227.34ms. Allocated memory is still 165.7MB. Free memory was 136.7MB in the beginning and 127.6MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.28ms. Allocated memory is still 165.7MB. Free memory was 127.6MB in the beginning and 126.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.80ms. Allocated memory is still 165.7MB. Free memory was 126.3MB in the beginning and 124.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 281.39ms. Allocated memory is still 165.7MB. Free memory was 124.9MB in the beginning and 115.8MB in the end (delta: 9.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 454.67ms. Allocated memory is still 165.7MB. Free memory was 115.8MB in the beginning and 97.0MB in the end (delta: 18.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 37.64ms. Allocated memory is still 165.7MB. Free memory was 97.0MB in the beginning and 95.5MB in the end (delta: 1.5MB). 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 0.3s. 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: 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 > 0 && i < 50 [L10] COND FALSE !(i < 20) [L13] COND TRUE i > 10 [L14] i = i+1 [L16] COND TRUE 30 <= i && i <= 40 [L17] i = i-1 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 > 0 && i < 50 [L10] COND FALSE !(i < 20) [L13] COND TRUE i > 10 [L14] i = i+1 [L16] COND TRUE 30 <= i && i <= 40 [L17] i = i-1 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-21 22:08:00,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a7b9de-815c-4e1a-a464-accfb1cda538/bin/uautomizer-verify-bycVGegfSx/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)