./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-acceleration/phases_2-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0e0057cc 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_e23c5420-f12e-4d47-9ad8-73675afe0dcf/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c5420-f12e-4d47-9ad8-73675afe0dcf/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_e23c5420-f12e-4d47-9ad8-73675afe0dcf/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c5420-f12e-4d47-9ad8-73675afe0dcf/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-acceleration/phases_2-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c5420-f12e-4d47-9ad8-73675afe0dcf/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_e23c5420-f12e-4d47-9ad8-73675afe0dcf/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 c973e7f310a848892a18e3f534717b85b3f4d9e6c87fd06bd7bcf01c28300fa4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:48:04,401 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:48:04,469 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c5420-f12e-4d47-9ad8-73675afe0dcf/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-29 04:48:04,473 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:48:04,474 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:48:04,498 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:48:04,499 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:48:04,500 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:48:04,500 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:48:04,501 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:48:04,502 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:48:04,502 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:48:04,503 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:48:04,503 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-29 04:48:04,504 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-29 04:48:04,504 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-29 04:48:04,505 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-29 04:48:04,505 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-29 04:48:04,506 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-29 04:48:04,506 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:48:04,507 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-29 04:48:04,507 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:48:04,508 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:48:04,508 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:48:04,509 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:48:04,509 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-29 04:48:04,510 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-29 04:48:04,510 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-29 04:48:04,511 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:48:04,511 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:48:04,511 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:48:04,512 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-29 04:48:04,512 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:48:04,512 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:48:04,513 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:48:04,513 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:48:04,513 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:48:04,514 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-29 04:48:04,514 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_e23c5420-f12e-4d47-9ad8-73675afe0dcf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c5420-f12e-4d47-9ad8-73675afe0dcf/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c973e7f310a848892a18e3f534717b85b3f4d9e6c87fd06bd7bcf01c28300fa4 [2023-11-29 04:48:04,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:48:04,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:48:04,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:48:04,752 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:48:04,752 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:48:04,754 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c5420-f12e-4d47-9ad8-73675afe0dcf/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/loop-acceleration/phases_2-2.c [2023-11-29 04:48:07,565 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:48:07,735 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:48:07,736 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c5420-f12e-4d47-9ad8-73675afe0dcf/sv-benchmarks/c/loop-acceleration/phases_2-2.c [2023-11-29 04:48:07,743 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c5420-f12e-4d47-9ad8-73675afe0dcf/bin/uautomizer-verify-BQ2R08f2Ya/data/65058a95b/bab9d510b19048dd97a3dc8575ed1490/FLAG1b55fbf3c [2023-11-29 04:48:07,759 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c5420-f12e-4d47-9ad8-73675afe0dcf/bin/uautomizer-verify-BQ2R08f2Ya/data/65058a95b/bab9d510b19048dd97a3dc8575ed1490 [2023-11-29 04:48:07,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:48:07,764 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:48:07,766 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:48:07,766 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:48:07,772 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:48:07,773 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:48:07" (1/1) ... [2023-11-29 04:48:07,774 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@733a1ce0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:07, skipping insertion in model container [2023-11-29 04:48:07,774 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:48:07" (1/1) ... [2023-11-29 04:48:07,798 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:48:07,969 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:48:07,982 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:48:07,999 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:48:08,016 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:48:08,016 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:08 WrapperNode [2023-11-29 04:48:08,016 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:48:08,018 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:48:08,018 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:48:08,018 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:48:08,026 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:08" (1/1) ... [2023-11-29 04:48:08,034 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:08" (1/1) ... [2023-11-29 04:48:08,054 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 33 [2023-11-29 04:48:08,054 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:48:08,055 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:48:08,055 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:48:08,055 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:48:08,068 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:08" (1/1) ... [2023-11-29 04:48:08,068 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:08" (1/1) ... [2023-11-29 04:48:08,069 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:08" (1/1) ... [2023-11-29 04:48:08,082 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 04:48:08,082 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:08" (1/1) ... [2023-11-29 04:48:08,082 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:08" (1/1) ... [2023-11-29 04:48:08,085 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:08" (1/1) ... [2023-11-29 04:48:08,089 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:08" (1/1) ... [2023-11-29 04:48:08,090 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:08" (1/1) ... [2023-11-29 04:48:08,091 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:08" (1/1) ... [2023-11-29 04:48:08,092 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:48:08,093 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:48:08,093 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:48:08,093 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:48:08,094 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:08" (1/1) ... [2023-11-29 04:48:08,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:48:08,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c5420-f12e-4d47-9ad8-73675afe0dcf/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:08,124 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c5420-f12e-4d47-9ad8-73675afe0dcf/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 04:48:08,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c5420-f12e-4d47-9ad8-73675afe0dcf/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-29 04:48:08,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:48:08,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:48:08,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:48:08,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:48:08,238 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:48:08,240 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:48:08,348 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:48:08,357 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:48:08,357 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 04:48:08,359 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:48:08 BoogieIcfgContainer [2023-11-29 04:48:08,359 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:48:08,360 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-29 04:48:08,361 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-29 04:48:08,365 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-29 04:48:08,366 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 04:48:08,366 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 04:48:07" (1/3) ... [2023-11-29 04:48:08,367 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5bb5f2f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 04:48:08, skipping insertion in model container [2023-11-29 04:48:08,367 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 04:48:08,367 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:08" (2/3) ... [2023-11-29 04:48:08,368 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5bb5f2f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 04:48:08, skipping insertion in model container [2023-11-29 04:48:08,368 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 04:48:08,368 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:48:08" (3/3) ... [2023-11-29 04:48:08,370 INFO L332 chiAutomizerObserver]: Analyzing ICFG phases_2-2.c [2023-11-29 04:48:08,428 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-29 04:48:08,428 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-29 04:48:08,428 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-29 04:48:08,428 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-29 04:48:08,428 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-29 04:48:08,428 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-29 04:48:08,429 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-29 04:48:08,429 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-29 04:48:08,433 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 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 04:48:08,450 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-29 04:48:08,451 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 04:48:08,451 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 04:48:08,456 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-29 04:48:08,456 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-29 04:48:08,456 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-29 04:48:08,457 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 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 04:48:08,458 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-29 04:48:08,458 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 04:48:08,459 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 04:48:08,459 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-29 04:48:08,459 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-29 04:48:08,467 INFO L748 eck$LassoCheckResult]: Stem: 10#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(13, 2);call #Ultimate.allocInit(12, 3); 4#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~post5#1, main_~x~0#1, main_~y~0#1;main_~x~0#1 := 1;havoc main_#t~nondet4#1;main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 9#L21true assume !!(main_~y~0#1 % 4294967296 > 0); 3#L24-2true [2023-11-29 04:48:08,467 INFO L750 eck$LassoCheckResult]: Loop: 3#L24-2true assume !!(main_~x~0#1 % 4294967296 < main_~y~0#1 % 4294967296); 11#L24true assume main_~x~0#1 % 4294967296 < main_~y~0#1 % 4294967296 / (main_~x~0#1 % 4294967296) % 4294967296;main_~x~0#1 := main_~x~0#1 * main_~x~0#1; 3#L24-2true [2023-11-29 04:48:08,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:08,473 INFO L85 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2023-11-29 04:48:08,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:08,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621239286] [2023-11-29 04:48:08,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:08,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:48:08,576 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 04:48:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:48:08,602 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 04:48:08,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:08,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1476, now seen corresponding path program 1 times [2023-11-29 04:48:08,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:08,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632184644] [2023-11-29 04:48:08,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:08,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:08,616 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:48:08,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [737861787] [2023-11-29 04:48:08,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:08,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:08,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c5420-f12e-4d47-9ad8-73675afe0dcf/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:08,623 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c5420-f12e-4d47-9ad8-73675afe0dcf/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:08,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c5420-f12e-4d47-9ad8-73675afe0dcf/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:48:08,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:48:08,660 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 04:48:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:48:08,671 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 04:48:08,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:08,673 INFO L85 PathProgramCache]: Analyzing trace with hash 28695975, now seen corresponding path program 1 times [2023-11-29 04:48:08,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:08,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271505676] [2023-11-29 04:48:08,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:08,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:08,688 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:48:08,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1982916809] [2023-11-29 04:48:08,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:08,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:08,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c5420-f12e-4d47-9ad8-73675afe0dcf/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:08,719 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c5420-f12e-4d47-9ad8-73675afe0dcf/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:08,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c5420-f12e-4d47-9ad8-73675afe0dcf/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:48:08,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:48:08,766 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 04:48:08,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:48:08,781 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 04:48:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:48:09,019 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 04:48:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:48:09,044 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 04:48:09 BoogieIcfgContainer [2023-11-29 04:48:09,044 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-29 04:48:09,044 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 04:48:09,044 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 04:48:09,045 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 04:48:09,045 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:48:08" (3/4) ... [2023-11-29 04:48:09,046 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-29 04:48:09,076 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c5420-f12e-4d47-9ad8-73675afe0dcf/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 04:48:09,077 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 04:48:09,078 INFO L158 Benchmark]: Toolchain (without parser) took 1313.30ms. Allocated memory is still 161.5MB. Free memory was 123.3MB in the beginning and 118.5MB in the end (delta: 4.7MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. [2023-11-29 04:48:09,078 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 104.9MB. Free memory is still 55.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:48:09,079 INFO L158 Benchmark]: CACSL2BoogieTranslator took 250.86ms. Allocated memory is still 161.5MB. Free memory was 123.3MB in the beginning and 112.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 04:48:09,079 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.61ms. Allocated memory is still 161.5MB. Free memory was 112.8MB in the beginning and 111.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 04:48:09,080 INFO L158 Benchmark]: Boogie Preprocessor took 37.33ms. Allocated memory is still 161.5MB. Free memory was 111.3MB in the beginning and 109.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:48:09,081 INFO L158 Benchmark]: RCFGBuilder took 266.35ms. Allocated memory is still 161.5MB. Free memory was 109.7MB in the beginning and 100.2MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 04:48:09,081 INFO L158 Benchmark]: BuchiAutomizer took 683.42ms. Allocated memory is still 161.5MB. Free memory was 100.2MB in the beginning and 120.6MB in the end (delta: -20.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:48:09,082 INFO L158 Benchmark]: Witness Printer took 32.41ms. Allocated memory is still 161.5MB. Free memory was 120.6MB in the beginning and 118.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 04:48:09,085 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 104.9MB. Free memory is still 55.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 250.86ms. Allocated memory is still 161.5MB. Free memory was 123.3MB in the beginning and 112.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.61ms. Allocated memory is still 161.5MB. Free memory was 112.8MB in the beginning and 111.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.33ms. Allocated memory is still 161.5MB. Free memory was 111.3MB in the beginning and 109.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 266.35ms. Allocated memory is still 161.5MB. Free memory was 109.7MB in the beginning and 100.2MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 683.42ms. Allocated memory is still 161.5MB. Free memory was 100.2MB in the beginning and 120.6MB in the end (delta: -20.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 32.41ms. Allocated memory is still 161.5MB. Free memory was 120.6MB in the beginning and 118.5MB 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: 23]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L18] unsigned int x = 1; [L19] unsigned int y = __VERIFIER_nondet_uint(); [L21] COND FALSE !(!(y > 0)) VAL [x=1, y=4294967295] Loop: [L23] COND TRUE x < y [L24] COND TRUE x < y / x [L25] x *= x End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 23]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L18] unsigned int x = 1; [L19] unsigned int y = __VERIFIER_nondet_uint(); [L21] COND FALSE !(!(y > 0)) VAL [x=1, y=4294967295] Loop: [L23] COND TRUE x < y [L24] COND TRUE x < y / x [L25] x *= x End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-29 04:48:09,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c5420-f12e-4d47-9ad8-73675afe0dcf/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 04:48:09,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c5420-f12e-4d47-9ad8-73675afe0dcf/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-29 04:48:09,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23c5420-f12e-4d47-9ad8-73675afe0dcf/bin/uautomizer-verify-BQ2R08f2Ya/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)