./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 cf1a7837 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_01c3560a-aa45-4f2f-bbaf-5cf3c41344a9/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01c3560a-aa45-4f2f-bbaf-5cf3c41344a9/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01c3560a-aa45-4f2f-bbaf-5cf3c41344a9/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01c3560a-aa45-4f2f-bbaf-5cf3c41344a9/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/TwoFloatInterv.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01c3560a-aa45-4f2f-bbaf-5cf3c41344a9/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01c3560a-aa45-4f2f-bbaf-5cf3c41344a9/bin/uautomizer-verify-uTZkv6EMXl --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-cf1a783 [2023-11-12 02:29:29,910 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:29:30,044 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01c3560a-aa45-4f2f-bbaf-5cf3c41344a9/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-12 02:29:30,053 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:29:30,054 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:29:30,100 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:29:30,101 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:29:30,101 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:29:30,103 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:29:30,109 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:29:30,109 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:29:30,110 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-12 02:29:30,111 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-12 02:29:30,113 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-12 02:29:30,113 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-12 02:29:30,114 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-12 02:29:30,114 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-12 02:29:30,115 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:29:30,116 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-12 02:29:30,117 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:29:30,117 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:29:30,118 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-12 02:29:30,118 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-12 02:29:30,119 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-12 02:29:30,120 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:29:30,120 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:29:30,121 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-12 02:29:30,121 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:29:30,122 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:29:30,122 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:29:30,124 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:29:30,124 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:29:30,125 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-12 02:29:30,126 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_01c3560a-aa45-4f2f-bbaf-5cf3c41344a9/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01c3560a-aa45-4f2f-bbaf-5cf3c41344a9/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 619980f24f1306727466f5c616de82a47a9f9fa9949a068930aef8a7aa603b17 [2023-11-12 02:29:30,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:29:30,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:29:30,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:29:30,487 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:29:30,488 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:29:30,490 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01c3560a-aa45-4f2f-bbaf-5cf3c41344a9/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/termination-restricted-15/TwoFloatInterv.c [2023-11-12 02:29:33,777 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:29:34,035 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:29:34,035 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01c3560a-aa45-4f2f-bbaf-5cf3c41344a9/sv-benchmarks/c/termination-restricted-15/TwoFloatInterv.c [2023-11-12 02:29:34,044 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01c3560a-aa45-4f2f-bbaf-5cf3c41344a9/bin/uautomizer-verify-uTZkv6EMXl/data/09b3e1f07/551a3666b9354be9bc36efabf624d099/FLAGc38c65568 [2023-11-12 02:29:34,064 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01c3560a-aa45-4f2f-bbaf-5cf3c41344a9/bin/uautomizer-verify-uTZkv6EMXl/data/09b3e1f07/551a3666b9354be9bc36efabf624d099 [2023-11-12 02:29:34,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:29:34,069 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:29:34,071 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:29:34,071 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:29:34,077 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:29:34,078 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:29:34" (1/1) ... [2023-11-12 02:29:34,080 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12abccae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:34, skipping insertion in model container [2023-11-12 02:29:34,080 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:29:34" (1/1) ... [2023-11-12 02:29:34,102 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:29:34,287 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:29:34,295 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:29:34,317 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:29:34,335 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:29:34,336 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:34 WrapperNode [2023-11-12 02:29:34,336 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:29:34,338 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:29:34,339 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:29:34,339 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:29:34,349 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:34" (1/1) ... [2023-11-12 02:29:34,355 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:34" (1/1) ... [2023-11-12 02:29:34,376 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2023-11-12 02:29:34,376 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:29:34,377 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:29:34,378 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:29:34,378 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:29:34,390 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:34" (1/1) ... [2023-11-12 02:29:34,391 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:34" (1/1) ... [2023-11-12 02:29:34,392 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:34" (1/1) ... [2023-11-12 02:29:34,392 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:34" (1/1) ... [2023-11-12 02:29:34,394 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:34" (1/1) ... [2023-11-12 02:29:34,399 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:34" (1/1) ... [2023-11-12 02:29:34,400 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:34" (1/1) ... [2023-11-12 02:29:34,402 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:34" (1/1) ... [2023-11-12 02:29:34,403 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:29:34,404 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:29:34,405 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:29:34,405 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:29:34,406 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:34" (1/1) ... [2023-11-12 02:29:34,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:29:34,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01c3560a-aa45-4f2f-bbaf-5cf3c41344a9/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:29:34,439 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01c3560a-aa45-4f2f-bbaf-5cf3c41344a9/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:29:34,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01c3560a-aa45-4f2f-bbaf-5cf3c41344a9/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-12 02:29:34,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:29:34,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:29:34,592 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:29:34,595 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:29:34,733 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:29:34,750 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:29:34,752 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:29:34,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:29:34 BoogieIcfgContainer [2023-11-12 02:29:34,755 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:29:34,758 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-12 02:29:34,758 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-12 02:29:34,764 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-12 02:29:34,765 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-12 02:29:34,766 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 12.11 02:29:34" (1/3) ... [2023-11-12 02:29:34,767 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1c97d027 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.11 02:29:34, skipping insertion in model container [2023-11-12 02:29:34,768 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-12 02:29:34,768 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:34" (2/3) ... [2023-11-12 02:29:34,771 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1c97d027 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.11 02:29:34, skipping insertion in model container [2023-11-12 02:29:34,771 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-12 02:29:34,772 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:29:34" (3/3) ... [2023-11-12 02:29:34,780 INFO L332 chiAutomizerObserver]: Analyzing ICFG TwoFloatInterv.c [2023-11-12 02:29:34,873 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-12 02:29:34,874 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-12 02:29:34,874 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-12 02:29:34,874 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-12 02:29:34,875 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-12 02:29:34,875 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-12 02:29:34,877 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-12 02:29:34,878 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-12 02:29:34,883 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) [2023-11-12 02:29:34,910 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-12 02:29:34,911 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-12 02:29:34,911 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-12 02:29:34,919 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-12 02:29:34,919 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-12 02:29:34,920 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-12 02:29:34,920 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) [2023-11-12 02:29:34,923 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-12 02:29:34,924 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-12 02:29:34,924 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-12 02:29:34,925 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-12 02:29:34,925 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-12 02:29:34,937 INFO L748 eck$LassoCheckResult]: Stem: 8#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 10#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 3#L16-1true [2023-11-12 02:29:34,938 INFO L750 eck$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 [2023-11-12 02:29:34,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:34,950 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-12 02:29:34,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:34,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680467275] [2023-11-12 02:29:34,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:34,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:29:35,076 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:29:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:29:35,098 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:29:35,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:35,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1267244, now seen corresponding path program 1 times [2023-11-12 02:29:35,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:35,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229724500] [2023-11-12 02:29:35,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:35,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:29:35,141 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:29:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:29:35,171 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:29:35,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:35,174 INFO L85 PathProgramCache]: Analyzing trace with hash 889694446, now seen corresponding path program 1 times [2023-11-12 02:29:35,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:35,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876728500] [2023-11-12 02:29:35,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:35,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:35,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:29:35,195 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:29:35,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:29:35,217 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:29:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:29:35,452 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:29:35,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:29:35,478 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.11 02:29:35 BoogieIcfgContainer [2023-11-12 02:29:35,479 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-12 02:29:35,480 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:29:35,480 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:29:35,480 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:29:35,482 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:29:34" (3/4) ... [2023-11-12 02:29:35,484 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-12 02:29:35,546 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01c3560a-aa45-4f2f-bbaf-5cf3c41344a9/bin/uautomizer-verify-uTZkv6EMXl/witness.graphml [2023-11-12 02:29:35,549 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:29:35,551 INFO L158 Benchmark]: Toolchain (without parser) took 1481.93ms. Allocated memory is still 157.3MB. Free memory was 119.1MB in the beginning and 121.6MB in the end (delta: -2.5MB). Peak memory consumption was 281.5kB. Max. memory is 16.1GB. [2023-11-12 02:29:35,552 INFO L158 Benchmark]: CDTParser took 0.55ms. Allocated memory is still 100.7MB. Free memory is still 48.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:29:35,552 INFO L158 Benchmark]: CACSL2BoogieTranslator took 266.06ms. Allocated memory is still 157.3MB. Free memory was 119.1MB in the beginning and 110.1MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-12 02:29:35,557 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.16ms. Allocated memory is still 157.3MB. Free memory was 109.6MB in the beginning and 108.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:29:35,558 INFO L158 Benchmark]: Boogie Preprocessor took 26.20ms. Allocated memory is still 157.3MB. Free memory was 108.4MB in the beginning and 107.5MB in the end (delta: 854.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:29:35,560 INFO L158 Benchmark]: RCFGBuilder took 351.59ms. Allocated memory is still 157.3MB. Free memory was 107.5MB in the beginning and 99.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-12 02:29:35,561 INFO L158 Benchmark]: BuchiAutomizer took 720.64ms. Allocated memory is still 157.3MB. Free memory was 99.2MB in the beginning and 123.7MB in the end (delta: -24.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:29:35,562 INFO L158 Benchmark]: Witness Printer took 69.59ms. Allocated memory is still 157.3MB. Free memory was 123.7MB in the beginning and 121.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:29:35,566 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55ms. Allocated memory is still 100.7MB. Free memory is still 48.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 266.06ms. Allocated memory is still 157.3MB. Free memory was 119.1MB in the beginning and 110.1MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.16ms. Allocated memory is still 157.3MB. Free memory was 109.6MB in the beginning and 108.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.20ms. Allocated memory is still 157.3MB. Free memory was 108.4MB in the beginning and 107.5MB in the end (delta: 854.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 351.59ms. Allocated memory is still 157.3MB. Free memory was 107.5MB in the beginning and 99.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 720.64ms. Allocated memory is still 157.3MB. Free memory was 99.2MB in the beginning and 123.7MB in the end (delta: -24.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 69.59ms. Allocated memory is still 157.3MB. Free memory was 123.7MB in the beginning and 121.6MB in the end (delta: 2.1MB). 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 0.6s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.5s. 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! [2023-11-12 02:29:35,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01c3560a-aa45-4f2f-bbaf-5cf3c41344a9/bin/uautomizer-verify-uTZkv6EMXl/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)