./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/NonTerminationSimple7.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 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_71cde352-1ebc-4293-baf7-35f259d54bce/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cde352-1ebc-4293-baf7-35f259d54bce/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_71cde352-1ebc-4293-baf7-35f259d54bce/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cde352-1ebc-4293-baf7-35f259d54bce/bin/uautomizer-verify-bycVGegfSx/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/NonTerminationSimple7.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cde352-1ebc-4293-baf7-35f259d54bce/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_71cde352-1ebc-4293-baf7-35f259d54bce/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 95f92d67113368ce9163571f81d85414539d558535b51b4568b3b416ae740375 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:07:01,036 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:07:01,112 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cde352-1ebc-4293-baf7-35f259d54bce/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-21 22:07:01,117 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:07:01,118 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:07:01,145 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:07:01,146 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:07:01,147 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:07:01,148 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:07:01,148 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:07:01,149 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:07:01,150 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:07:01,151 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:07:01,151 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-21 22:07:01,152 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-21 22:07:01,152 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-21 22:07:01,153 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-21 22:07:01,153 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-21 22:07:01,154 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-21 22:07:01,155 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:07:01,155 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-21 22:07:01,159 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:07:01,160 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:07:01,160 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-21 22:07:01,160 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-21 22:07:01,161 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-21 22:07:01,161 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:07:01,162 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:07:01,162 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-21 22:07:01,163 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:07:01,164 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:07:01,165 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:07:01,165 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:07:01,165 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:07:01,166 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-21 22:07:01,166 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_71cde352-1ebc-4293-baf7-35f259d54bce/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cde352-1ebc-4293-baf7-35f259d54bce/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95f92d67113368ce9163571f81d85414539d558535b51b4568b3b416ae740375 [2023-11-21 22:07:01,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:07:01,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:07:01,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:07:01,465 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:07:01,465 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:07:01,467 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cde352-1ebc-4293-baf7-35f259d54bce/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/termination-crafted/NonTerminationSimple7.c [2023-11-21 22:07:04,747 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:07:04,982 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:07:04,983 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cde352-1ebc-4293-baf7-35f259d54bce/sv-benchmarks/c/termination-crafted/NonTerminationSimple7.c [2023-11-21 22:07:04,991 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cde352-1ebc-4293-baf7-35f259d54bce/bin/uautomizer-verify-bycVGegfSx/data/52b02ed0b/f65702c8b93c4f16bf8b9e2d4927a707/FLAGa73e6219e [2023-11-21 22:07:05,007 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cde352-1ebc-4293-baf7-35f259d54bce/bin/uautomizer-verify-bycVGegfSx/data/52b02ed0b/f65702c8b93c4f16bf8b9e2d4927a707 [2023-11-21 22:07:05,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:07:05,012 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:07:05,013 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:07:05,014 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:07:05,026 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:07:05,027 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:07:05" (1/1) ... [2023-11-21 22:07:05,028 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64421831 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:05, skipping insertion in model container [2023-11-21 22:07:05,028 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:07:05" (1/1) ... [2023-11-21 22:07:05,055 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:07:05,278 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:07:05,285 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:07:05,304 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:07:05,323 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:07:05,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:05 WrapperNode [2023-11-21 22:07:05,325 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:07:05,327 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:07:05,327 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:07:05,328 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:07:05,337 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:05" (1/1) ... [2023-11-21 22:07:05,342 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:05" (1/1) ... [2023-11-21 22:07:05,364 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2023-11-21 22:07:05,365 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:07:05,365 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:07:05,366 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:07:05,366 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:07:05,379 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:05" (1/1) ... [2023-11-21 22:07:05,379 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:05" (1/1) ... [2023-11-21 22:07:05,380 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:05" (1/1) ... [2023-11-21 22:07:05,388 INFO L187 HeapSplitter]: Split 0 memory accesses to 0 slices as follows [] [2023-11-21 22:07:05,388 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:05" (1/1) ... [2023-11-21 22:07:05,389 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:05" (1/1) ... [2023-11-21 22:07:05,391 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:05" (1/1) ... [2023-11-21 22:07:05,395 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:05" (1/1) ... [2023-11-21 22:07:05,396 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:05" (1/1) ... [2023-11-21 22:07:05,397 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:05" (1/1) ... [2023-11-21 22:07:05,399 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:07:05,400 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:07:05,401 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:07:05,401 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:07:05,402 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:05" (1/1) ... [2023-11-21 22:07:05,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:07:05,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cde352-1ebc-4293-baf7-35f259d54bce/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:07:05,447 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cde352-1ebc-4293-baf7-35f259d54bce/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:07:05,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cde352-1ebc-4293-baf7-35f259d54bce/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-21 22:07:05,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:07:05,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:07:05,606 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:07:05,609 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:07:05,676 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:07:05,686 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:07:05,687 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 22:07:05,689 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:07:05 BoogieIcfgContainer [2023-11-21 22:07:05,689 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:07:05,690 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-21 22:07:05,691 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-21 22:07:05,695 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-21 22:07:05,696 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-21 22:07:05,697 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.11 10:07:05" (1/3) ... [2023-11-21 22:07:05,698 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@665556f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 10:07:05, skipping insertion in model container [2023-11-21 22:07:05,698 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-21 22:07:05,699 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:05" (2/3) ... [2023-11-21 22:07:05,699 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@665556f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 10:07:05, skipping insertion in model container [2023-11-21 22:07:05,699 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-21 22:07:05,700 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:07:05" (3/3) ... [2023-11-21 22:07:05,701 INFO L332 chiAutomizerObserver]: Analyzing ICFG NonTerminationSimple7.c [2023-11-21 22:07:05,760 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-21 22:07:05,760 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-21 22:07:05,760 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-21 22:07:05,761 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-21 22:07:05,761 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-21 22:07:05,761 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-21 22:07:05,761 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-21 22:07:05,762 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-21 22:07:05,766 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) [2023-11-21 22:07:05,783 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-21 22:07:05,784 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 22:07:05,784 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 22:07:05,790 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-21 22:07:05,790 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-11-21 22:07:05,791 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-21 22:07:05,791 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) [2023-11-21 22:07:05,792 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-21 22:07:05,793 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 22:07:05,793 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 22:07:05,793 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-21 22:07:05,793 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-11-21 22:07:05,802 INFO L748 eck$LassoCheckResult]: Stem: 4#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~x~0#1;havoc main_~c~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~c~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 5#L15true assume 0 == main_~c~0#1; 6#L16-2true [2023-11-21 22:07:05,803 INFO L750 eck$LassoCheckResult]: Loop: 6#L16-2true assume !!(main_~x~0#1 >= 0);main_~x~0#1 := main_~x~0#1 + main_~c~0#1; 6#L16-2true [2023-11-21 22:07:05,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:07:05,810 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2023-11-21 22:07:05,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:07:05,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760054690] [2023-11-21 22:07:05,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:07:05,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:07:05,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:07:05,897 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:07:05,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:07:05,916 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:07:05,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:07:05,920 INFO L85 PathProgramCache]: Analyzing trace with hash 45, now seen corresponding path program 1 times [2023-11-21 22:07:05,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:07:05,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643489683] [2023-11-21 22:07:05,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:07:05,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:07:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:07:05,932 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:07:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:07:05,938 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:07:05,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:07:05,939 INFO L85 PathProgramCache]: Analyzing trace with hash 925612, now seen corresponding path program 1 times [2023-11-21 22:07:05,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:07:05,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349434336] [2023-11-21 22:07:05,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:07:05,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:07:05,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:07:05,949 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:07:05,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:07:05,956 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:07:06,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:07:06,049 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:07:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:07:06,077 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.11 10:07:06 BoogieIcfgContainer [2023-11-21 22:07:06,077 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-21 22:07:06,078 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:07:06,078 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:07:06,079 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:07:06,079 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:07:05" (3/4) ... [2023-11-21 22:07:06,093 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-21 22:07:06,148 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cde352-1ebc-4293-baf7-35f259d54bce/bin/uautomizer-verify-bycVGegfSx/witness.graphml [2023-11-21 22:07:06,148 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:07:06,150 INFO L158 Benchmark]: Toolchain (without parser) took 1137.92ms. Allocated memory is still 161.5MB. Free memory was 119.9MB in the beginning and 80.9MB in the end (delta: 39.1MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2023-11-21 22:07:06,151 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 117.4MB. Free memory is still 68.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:07:06,151 INFO L158 Benchmark]: CACSL2BoogieTranslator took 311.96ms. Allocated memory is still 161.5MB. Free memory was 119.5MB in the beginning and 110.7MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-21 22:07:06,153 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.93ms. Allocated memory is still 161.5MB. Free memory was 110.7MB in the beginning and 109.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:07:06,154 INFO L158 Benchmark]: Boogie Preprocessor took 33.56ms. Allocated memory is still 161.5MB. Free memory was 109.3MB in the beginning and 107.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:07:06,158 INFO L158 Benchmark]: RCFGBuilder took 288.95ms. Allocated memory is still 161.5MB. Free memory was 107.7MB in the beginning and 99.7MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-21 22:07:06,159 INFO L158 Benchmark]: BuchiAutomizer took 387.07ms. Allocated memory is still 161.5MB. Free memory was 99.7MB in the beginning and 82.5MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-21 22:07:06,162 INFO L158 Benchmark]: Witness Printer took 70.34ms. Allocated memory is still 161.5MB. Free memory was 82.5MB in the beginning and 80.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:07:06,167 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 117.4MB. Free memory is still 68.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 311.96ms. Allocated memory is still 161.5MB. Free memory was 119.5MB in the beginning and 110.7MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.93ms. Allocated memory is still 161.5MB. Free memory was 110.7MB in the beginning and 109.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.56ms. Allocated memory is still 161.5MB. Free memory was 109.3MB in the beginning and 107.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 288.95ms. Allocated memory is still 161.5MB. Free memory was 107.7MB in the beginning and 99.7MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 387.07ms. Allocated memory is still 161.5MB. Free memory was 99.7MB in the beginning and 82.5MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 70.34ms. Allocated memory is still 161.5MB. Free memory was 82.5MB in the beginning and 80.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.3s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 16]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L12] int c, x; [L13] x = __VERIFIER_nondet_int() [L14] c = __VERIFIER_nondet_int() [L15] COND TRUE c == 0 VAL [c=0] Loop: [L16] COND TRUE x >= 0 [L17] x = x + c End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 16]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L12] int c, x; [L13] x = __VERIFIER_nondet_int() [L14] c = __VERIFIER_nondet_int() [L15] COND TRUE c == 0 VAL [c=0] Loop: [L16] COND TRUE x >= 0 [L17] x = x + c End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-21 22:07:06,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cde352-1ebc-4293-baf7-35f259d54bce/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)