./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loops/while_infinite_loop_2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_1f244798-9bda-45c6-8988-5b9b31622332/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f244798-9bda-45c6-8988-5b9b31622332/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_1f244798-9bda-45c6-8988-5b9b31622332/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f244798-9bda-45c6-8988-5b9b31622332/bin/uautomizer-verify-bycVGegfSx/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loops/while_infinite_loop_2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f244798-9bda-45c6-8988-5b9b31622332/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f244798-9bda-45c6-8988-5b9b31622332/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 32bit --witnessprinter.graph.data.programhash 2285a0532f76c71ed3da856eea9f62f11be9df4ff1d205bf57c17e8ec94f6df8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:05:08,632 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:05:08,726 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f244798-9bda-45c6-8988-5b9b31622332/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-21 22:05:08,732 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:05:08,733 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:05:08,765 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:05:08,766 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:05:08,766 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:05:08,767 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:05:08,768 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:05:08,769 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:05:08,770 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:05:08,770 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:05:08,771 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-21 22:05:08,772 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-21 22:05:08,772 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-21 22:05:08,773 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-21 22:05:08,774 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-21 22:05:08,774 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-21 22:05:08,775 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:05:08,775 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-21 22:05:08,776 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:05:08,777 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:05:08,777 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:05:08,778 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:05:08,778 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-21 22:05:08,779 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-21 22:05:08,779 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-21 22:05:08,780 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:05:08,780 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:05:08,781 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:05:08,781 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-21 22:05:08,782 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:05:08,782 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:05:08,783 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:05:08,783 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:05:08,784 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:05:08,784 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-21 22:05:08,785 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_1f244798-9bda-45c6-8988-5b9b31622332/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f244798-9bda-45c6-8988-5b9b31622332/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2285a0532f76c71ed3da856eea9f62f11be9df4ff1d205bf57c17e8ec94f6df8 [2023-11-21 22:05:09,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:05:09,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:05:09,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:05:09,084 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:05:09,085 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:05:09,086 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f244798-9bda-45c6-8988-5b9b31622332/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/loops/while_infinite_loop_2.c [2023-11-21 22:05:12,375 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:05:12,632 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:05:12,632 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f244798-9bda-45c6-8988-5b9b31622332/sv-benchmarks/c/loops/while_infinite_loop_2.c [2023-11-21 22:05:12,641 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f244798-9bda-45c6-8988-5b9b31622332/bin/uautomizer-verify-bycVGegfSx/data/dc280de09/aebfacfd1dfe475c823a97da9ff47080/FLAG30fa973b2 [2023-11-21 22:05:12,663 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f244798-9bda-45c6-8988-5b9b31622332/bin/uautomizer-verify-bycVGegfSx/data/dc280de09/aebfacfd1dfe475c823a97da9ff47080 [2023-11-21 22:05:12,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:05:12,667 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:05:12,669 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:05:12,669 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:05:12,675 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:05:12,676 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:05:12" (1/1) ... [2023-11-21 22:05:12,677 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c91c4ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:12, skipping insertion in model container [2023-11-21 22:05:12,678 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:05:12" (1/1) ... [2023-11-21 22:05:12,699 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:05:12,907 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:05:12,922 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:05:12,938 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:05:12,955 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:05:12,955 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:12 WrapperNode [2023-11-21 22:05:12,955 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:05:12,957 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:05:12,957 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:05:12,957 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:05:12,965 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:12" (1/1) ... [2023-11-21 22:05:12,973 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:12" (1/1) ... [2023-11-21 22:05:12,994 INFO L138 Inliner]: procedures = 12, calls = 10, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 30 [2023-11-21 22:05:12,994 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:05:12,995 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:05:12,996 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:05:12,996 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:05:13,009 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:12" (1/1) ... [2023-11-21 22:05:13,010 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:12" (1/1) ... [2023-11-21 22:05:13,011 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:12" (1/1) ... [2023-11-21 22:05:13,021 INFO L187 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-21 22:05:13,022 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:12" (1/1) ... [2023-11-21 22:05:13,022 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:12" (1/1) ... [2023-11-21 22:05:13,025 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:12" (1/1) ... [2023-11-21 22:05:13,031 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:12" (1/1) ... [2023-11-21 22:05:13,032 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:12" (1/1) ... [2023-11-21 22:05:13,034 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:12" (1/1) ... [2023-11-21 22:05:13,036 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:05:13,037 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:05:13,037 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:05:13,054 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:05:13,056 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:12" (1/1) ... [2023-11-21 22:05:13,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:05:13,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f244798-9bda-45c6-8988-5b9b31622332/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:13,099 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f244798-9bda-45c6-8988-5b9b31622332/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:05:13,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f244798-9bda-45c6-8988-5b9b31622332/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-21 22:05:13,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:05:13,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:05:13,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:05:13,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:05:13,239 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:05:13,242 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:05:13,388 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:05:13,399 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:05:13,407 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 22:05:13,410 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:05:13 BoogieIcfgContainer [2023-11-21 22:05:13,410 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:05:13,412 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-21 22:05:13,412 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-21 22:05:13,418 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-21 22:05:13,419 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-21 22:05:13,419 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.11 10:05:12" (1/3) ... [2023-11-21 22:05:13,421 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6aa75d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 10:05:13, skipping insertion in model container [2023-11-21 22:05:13,421 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-21 22:05:13,423 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:12" (2/3) ... [2023-11-21 22:05:13,427 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6aa75d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 10:05:13, skipping insertion in model container [2023-11-21 22:05:13,428 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-21 22:05:13,428 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:05:13" (3/3) ... [2023-11-21 22:05:13,434 INFO L332 chiAutomizerObserver]: Analyzing ICFG while_infinite_loop_2.c [2023-11-21 22:05:13,551 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-21 22:05:13,552 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-21 22:05:13,552 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-21 22:05:13,553 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-21 22:05:13,553 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-21 22:05:13,554 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-21 22:05:13,554 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-21 22:05:13,554 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-21 22:05:13,561 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 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 22:05:13,585 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-21 22:05:13,585 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 22:05:13,585 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 22:05:13,593 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 22:05:13,593 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-21 22:05:13,593 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-21 22:05:13,594 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 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 22:05:13,597 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-21 22:05:13,597 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 22:05:13,598 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 22:05:13,598 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 22:05:13,598 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-21 22:05:13,610 INFO L748 eck$LassoCheckResult]: Stem: 12#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(24, 2);call #Ultimate.allocInit(12, 3); 4#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~x~0#1;main_~x~0#1 := 0; 15#L14-2true [2023-11-21 22:05:13,610 INFO L750 eck$LassoCheckResult]: Loop: 15#L14-2true assume !false;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 0 == main_~x~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 10#L6true assume !(0 == __VERIFIER_assert_~cond#1); 3#L6-2true havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true; 15#L14-2true [2023-11-21 22:05:13,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:13,619 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-21 22:05:13,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:13,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976638259] [2023-11-21 22:05:13,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:13,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:05:13,758 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:05:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:05:13,800 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:05:13,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:13,804 INFO L85 PathProgramCache]: Analyzing trace with hash 41005, now seen corresponding path program 1 times [2023-11-21 22:05:13,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:13,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871832831] [2023-11-21 22:05:13,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:13,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:05:13,827 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:05:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:05:13,841 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:05:13,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:13,853 INFO L85 PathProgramCache]: Analyzing trace with hash 28699947, now seen corresponding path program 1 times [2023-11-21 22:05:13,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:13,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27877281] [2023-11-21 22:05:13,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:13,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:05:13,875 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:05:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:05:13,904 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:05:14,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:05:14,295 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:05:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:05:14,323 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.11 10:05:14 BoogieIcfgContainer [2023-11-21 22:05:14,323 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-21 22:05:14,324 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:05:14,324 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:05:14,324 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:05:14,325 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:05:13" (3/4) ... [2023-11-21 22:05:14,327 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-21 22:05:14,386 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f244798-9bda-45c6-8988-5b9b31622332/bin/uautomizer-verify-bycVGegfSx/witness.graphml [2023-11-21 22:05:14,386 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:05:14,392 INFO L158 Benchmark]: Toolchain (without parser) took 1719.72ms. Allocated memory was 117.4MB in the beginning and 146.8MB in the end (delta: 29.4MB). Free memory was 73.5MB in the beginning and 86.3MB in the end (delta: -12.8MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. [2023-11-21 22:05:14,393 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory is still 71.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:05:14,393 INFO L158 Benchmark]: CACSL2BoogieTranslator took 286.97ms. Allocated memory is still 117.4MB. Free memory was 73.3MB in the beginning and 63.6MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-21 22:05:14,394 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.99ms. Allocated memory is still 117.4MB. Free memory was 63.4MB in the beginning and 62.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:05:14,396 INFO L158 Benchmark]: Boogie Preprocessor took 40.44ms. Allocated memory is still 117.4MB. Free memory was 62.0MB in the beginning and 60.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:05:14,399 INFO L158 Benchmark]: RCFGBuilder took 373.27ms. Allocated memory was 117.4MB in the beginning and 146.8MB in the end (delta: 29.4MB). Free memory was 60.5MB in the beginning and 114.8MB in the end (delta: -54.3MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2023-11-21 22:05:14,399 INFO L158 Benchmark]: BuchiAutomizer took 911.29ms. Allocated memory is still 146.8MB. Free memory was 114.8MB in the beginning and 88.4MB in the end (delta: 26.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-21 22:05:14,400 INFO L158 Benchmark]: Witness Printer took 62.06ms. Allocated memory is still 146.8MB. Free memory was 88.4MB in the beginning and 86.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:05:14,407 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory is still 71.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 286.97ms. Allocated memory is still 117.4MB. Free memory was 73.3MB in the beginning and 63.6MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.99ms. Allocated memory is still 117.4MB. Free memory was 63.4MB in the beginning and 62.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.44ms. Allocated memory is still 117.4MB. Free memory was 62.0MB in the beginning and 60.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 373.27ms. Allocated memory was 117.4MB in the beginning and 146.8MB in the end (delta: 29.4MB). Free memory was 60.5MB in the beginning and 114.8MB in the end (delta: -54.3MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. * BuchiAutomizer took 911.29ms. Allocated memory is still 146.8MB. Free memory was 114.8MB in the beginning and 88.4MB in the end (delta: 26.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 62.06ms. Allocated memory is still 146.8MB. Free memory was 88.4MB in the beginning and 86.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.7s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. 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: [L12] int x=0; VAL [x=0] Loop: [L14] COND TRUE 1 [L16] CALL __VERIFIER_assert(x==0) [L6] COND FALSE !(!(cond)) [L16] RET __VERIFIER_assert(x==0) 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: [L12] int x=0; VAL [x=0] Loop: [L14] COND TRUE 1 [L16] CALL __VERIFIER_assert(x==0) [L6] COND FALSE !(!(cond)) [L16] RET __VERIFIER_assert(x==0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-21 22:05:14,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f244798-9bda-45c6-8988-5b9b31622332/bin/uautomizer-verify-bycVGegfSx/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)