./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-lit/hh2012-ex2b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0e0057cc 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_af98625a-3212-4973-9fec-9d32a14cce99/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af98625a-3212-4973-9fec-9d32a14cce99/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af98625a-3212-4973-9fec-9d32a14cce99/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af98625a-3212-4973-9fec-9d32a14cce99/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-lit/hh2012-ex2b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af98625a-3212-4973-9fec-9d32a14cce99/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af98625a-3212-4973-9fec-9d32a14cce99/bin/uautomizer-verify-BQ2R08f2Ya --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 32bit --witnessprinter.graph.data.programhash 33d07b945bedf27c99ae2e0c2f8250a85a01f89cb7fb82b15572e4678e4d0d97 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:03:03,125 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:03:03,191 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af98625a-3212-4973-9fec-9d32a14cce99/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-29 06:03:03,196 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:03:03,196 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:03:03,222 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:03:03,222 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:03:03,223 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:03:03,224 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:03:03,224 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:03:03,225 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:03:03,225 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:03:03,226 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:03:03,226 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-29 06:03:03,227 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-29 06:03:03,227 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-29 06:03:03,228 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-29 06:03:03,228 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-29 06:03:03,229 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-29 06:03:03,229 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:03:03,230 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-29 06:03:03,232 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:03:03,232 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:03:03,232 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:03:03,233 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:03:03,233 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-29 06:03:03,234 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-29 06:03:03,234 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-29 06:03:03,234 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 06:03:03,235 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:03:03,235 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:03:03,235 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-29 06:03:03,236 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:03:03,236 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:03:03,236 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:03:03,236 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:03:03,237 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:03:03,237 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-29 06:03:03,237 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_af98625a-3212-4973-9fec-9d32a14cce99/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af98625a-3212-4973-9fec-9d32a14cce99/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33d07b945bedf27c99ae2e0c2f8250a85a01f89cb7fb82b15572e4678e4d0d97 [2023-11-29 06:03:03,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:03:03,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:03:03,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:03:03,488 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:03:03,488 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:03:03,489 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af98625a-3212-4973-9fec-9d32a14cce99/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/loop-lit/hh2012-ex2b.i [2023-11-29 06:03:06,216 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:03:06,384 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:03:06,384 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af98625a-3212-4973-9fec-9d32a14cce99/sv-benchmarks/c/loop-lit/hh2012-ex2b.i [2023-11-29 06:03:06,392 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af98625a-3212-4973-9fec-9d32a14cce99/bin/uautomizer-verify-BQ2R08f2Ya/data/da0ed3398/dee7058178b74a49994147668129163c/FLAGe5e2ab1bd [2023-11-29 06:03:06,407 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af98625a-3212-4973-9fec-9d32a14cce99/bin/uautomizer-verify-BQ2R08f2Ya/data/da0ed3398/dee7058178b74a49994147668129163c [2023-11-29 06:03:06,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:03:06,412 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:03:06,414 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:03:06,414 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:03:06,419 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:03:06,420 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:03:06" (1/1) ... [2023-11-29 06:03:06,421 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dc7568e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:06, skipping insertion in model container [2023-11-29 06:03:06,421 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:03:06" (1/1) ... [2023-11-29 06:03:06,443 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:03:06,605 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:03:06,617 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:03:06,632 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:03:06,648 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:03:06,648 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:06 WrapperNode [2023-11-29 06:03:06,648 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:03:06,650 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:03:06,650 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:03:06,650 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:03:06,658 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:06" (1/1) ... [2023-11-29 06:03:06,665 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:06" (1/1) ... [2023-11-29 06:03:06,683 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 42 [2023-11-29 06:03:06,683 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:03:06,684 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:03:06,684 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:03:06,684 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:03:06,695 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:06" (1/1) ... [2023-11-29 06:03:06,696 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:06" (1/1) ... [2023-11-29 06:03:06,697 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:06" (1/1) ... [2023-11-29 06:03:06,708 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 06:03:06,708 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:06" (1/1) ... [2023-11-29 06:03:06,709 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:06" (1/1) ... [2023-11-29 06:03:06,712 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:06" (1/1) ... [2023-11-29 06:03:06,715 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:06" (1/1) ... [2023-11-29 06:03:06,716 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:06" (1/1) ... [2023-11-29 06:03:06,717 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:06" (1/1) ... [2023-11-29 06:03:06,719 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:03:06,720 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:03:06,720 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:03:06,720 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:03:06,721 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:06" (1/1) ... [2023-11-29 06:03:06,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:03:06,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af98625a-3212-4973-9fec-9d32a14cce99/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:03:06,753 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af98625a-3212-4973-9fec-9d32a14cce99/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:03:06,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af98625a-3212-4973-9fec-9d32a14cce99/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-29 06:03:06,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:03:06,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:03:06,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:03:06,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:03:06,858 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:03:06,860 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:03:06,958 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:03:06,968 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:03:06,968 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 06:03:06,970 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:03:06 BoogieIcfgContainer [2023-11-29 06:03:06,970 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:03:06,971 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-29 06:03:06,971 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-29 06:03:06,975 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-29 06:03:06,976 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 06:03:06,976 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 06:03:06" (1/3) ... [2023-11-29 06:03:06,977 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2150a3d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 06:03:06, skipping insertion in model container [2023-11-29 06:03:06,978 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 06:03:06,978 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:06" (2/3) ... [2023-11-29 06:03:06,978 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2150a3d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 06:03:06, skipping insertion in model container [2023-11-29 06:03:06,979 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 06:03:06,979 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:03:06" (3/3) ... [2023-11-29 06:03:06,980 INFO L332 chiAutomizerObserver]: Analyzing ICFG hh2012-ex2b.i [2023-11-29 06:03:07,032 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-29 06:03:07,033 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-29 06:03:07,033 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-29 06:03:07,033 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-29 06:03:07,033 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-29 06:03:07,033 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-29 06:03:07,033 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-29 06:03:07,034 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-29 06:03:07,037 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 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) [2023-11-29 06:03:07,052 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2023-11-29 06:03:07,052 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 06:03:07,053 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 06:03:07,058 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-29 06:03:07,058 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-29 06:03:07,058 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-29 06:03:07,058 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 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) [2023-11-29 06:03:07,060 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2023-11-29 06:03:07,060 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 06:03:07,060 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 06:03:07,061 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-29 06:03:07,061 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-29 06:03:07,067 INFO L748 eck$LassoCheckResult]: Stem: 14#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(10, 2); 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~post2#1, main_~n~0#1;main_~n~0#1 := 0; 5#L19-1true [2023-11-29 06:03:07,067 INFO L750 eck$LassoCheckResult]: Loop: 5#L19-1true assume !false;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~n~0#1 <= 60 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 12#L13true assume !(0 == __VERIFIER_assert_~cond#1); 6#L13-3true havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;havoc main_#t~nondet1#1; 15#L19true assume !(0 != main_#t~nondet1#1 % 256);havoc main_#t~nondet1#1; 5#L19-1true [2023-11-29 06:03:07,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:03:07,072 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-29 06:03:07,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:03:07,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134207032] [2023-11-29 06:03:07,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:07,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:03:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:03:07,150 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:03:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:03:07,170 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 06:03:07,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:03:07,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1276138, now seen corresponding path program 1 times [2023-11-29 06:03:07,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:03:07,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255680149] [2023-11-29 06:03:07,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:07,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:03:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:03:07,186 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:03:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:03:07,195 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 06:03:07,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:03:07,196 INFO L85 PathProgramCache]: Analyzing trace with hash 889703340, now seen corresponding path program 1 times [2023-11-29 06:03:07,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:03:07,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030508006] [2023-11-29 06:03:07,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:07,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:03:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:03:07,212 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:03:07,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:03:07,224 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 06:03:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:03:07,418 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:03:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:03:07,442 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 06:03:07 BoogieIcfgContainer [2023-11-29 06:03:07,442 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-29 06:03:07,443 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 06:03:07,443 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 06:03:07,443 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 06:03:07,444 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:03:06" (3/4) ... [2023-11-29 06:03:07,445 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-29 06:03:07,481 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af98625a-3212-4973-9fec-9d32a14cce99/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 06:03:07,482 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 06:03:07,483 INFO L158 Benchmark]: Toolchain (without parser) took 1070.76ms. Allocated memory is still 155.2MB. Free memory was 118.4MB in the beginning and 67.8MB in the end (delta: 50.5MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2023-11-29 06:03:07,484 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 102.8MB. Free memory was 71.7MB in the beginning and 71.7MB in the end (delta: 29.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 06:03:07,484 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.33ms. Allocated memory is still 155.2MB. Free memory was 117.7MB in the beginning and 107.7MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 06:03:07,485 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.83ms. Allocated memory is still 155.2MB. Free memory was 107.7MB in the beginning and 106.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 06:03:07,486 INFO L158 Benchmark]: Boogie Preprocessor took 34.91ms. Allocated memory is still 155.2MB. Free memory was 106.4MB in the beginning and 105.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 06:03:07,486 INFO L158 Benchmark]: RCFGBuilder took 250.36ms. Allocated memory is still 155.2MB. Free memory was 104.4MB in the beginning and 95.3MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 06:03:07,487 INFO L158 Benchmark]: BuchiAutomizer took 471.11ms. Allocated memory is still 155.2MB. Free memory was 95.3MB in the beginning and 69.4MB in the end (delta: 25.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-29 06:03:07,487 INFO L158 Benchmark]: Witness Printer took 38.88ms. Allocated memory is still 155.2MB. Free memory was 69.4MB in the beginning and 67.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 06:03:07,490 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 102.8MB. Free memory was 71.7MB in the beginning and 71.7MB in the end (delta: 29.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 235.33ms. Allocated memory is still 155.2MB. Free memory was 117.7MB in the beginning and 107.7MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.83ms. Allocated memory is still 155.2MB. Free memory was 107.7MB in the beginning and 106.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.91ms. Allocated memory is still 155.2MB. Free memory was 106.4MB in the beginning and 105.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 250.36ms. Allocated memory is still 155.2MB. Free memory was 104.4MB in the beginning and 95.3MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 471.11ms. Allocated memory is still 155.2MB. Free memory was 95.3MB in the beginning and 69.4MB in the end (delta: 25.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 38.88ms. Allocated memory is still 155.2MB. Free memory was 69.4MB in the beginning and 67.8MB 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 0.4s 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: 1]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L16] int n = 0; VAL [n=0] Loop: [L17] COND TRUE 1 [L18] CALL __VERIFIER_assert(n <= 60) [L13] COND FALSE !(!(cond)) [L18] RET __VERIFIER_assert(n <= 60) [L19] COND FALSE !(__VERIFIER_nondet_bool()) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L16] int n = 0; VAL [n=0] Loop: [L17] COND TRUE 1 [L18] CALL __VERIFIER_assert(n <= 60) [L13] COND FALSE !(!(cond)) [L18] RET __VERIFIER_assert(n <= 60) [L19] COND FALSE !(__VERIFIER_nondet_bool()) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-29 06:03:07,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af98625a-3212-4973-9fec-9d32a14cce99/bin/uautomizer-verify-BQ2R08f2Ya/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)