./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 527bcce2 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_986fea01-0b40-460e-9891-6820aaaf83f1/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986fea01-0b40-460e-9891-6820aaaf83f1/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_986fea01-0b40-460e-9891-6820aaaf83f1/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986fea01-0b40-460e-9891-6820aaaf83f1/bin/uautomizer-verify-bycVGegfSx/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986fea01-0b40-460e-9891-6820aaaf83f1/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_986fea01-0b40-460e-9891-6820aaaf83f1/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 0ad27fb086e75bf8f5b08286d8e766d07abfe44ff39234568924cf55ade7a6d5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:26:07,054 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:26:07,176 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986fea01-0b40-460e-9891-6820aaaf83f1/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-21 22:26:07,183 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:26:07,183 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:26:07,209 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:26:07,210 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:26:07,211 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:26:07,212 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:26:07,212 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:26:07,213 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:26:07,214 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:26:07,214 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:26:07,215 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-21 22:26:07,216 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-21 22:26:07,216 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-21 22:26:07,217 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-21 22:26:07,217 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-21 22:26:07,218 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-21 22:26:07,219 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:26:07,219 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-21 22:26:07,220 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:26:07,221 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:26:07,221 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:26:07,222 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:26:07,222 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-21 22:26:07,223 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-21 22:26:07,223 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-21 22:26:07,224 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:26:07,224 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:26:07,225 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:26:07,225 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-21 22:26:07,226 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:26:07,227 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:26:07,227 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:26:07,228 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:26:07,228 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:26:07,229 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-21 22:26:07,229 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_986fea01-0b40-460e-9891-6820aaaf83f1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986fea01-0b40-460e-9891-6820aaaf83f1/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ad27fb086e75bf8f5b08286d8e766d07abfe44ff39234568924cf55ade7a6d5 [2023-11-21 22:26:07,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:26:07,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:26:07,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:26:07,592 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:26:07,593 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:26:07,595 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986fea01-0b40-460e-9891-6820aaaf83f1/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i [2023-11-21 22:26:10,710 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:26:10,941 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:26:10,941 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986fea01-0b40-460e-9891-6820aaaf83f1/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i [2023-11-21 22:26:10,949 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986fea01-0b40-460e-9891-6820aaaf83f1/bin/uautomizer-verify-bycVGegfSx/data/ec6425c23/70043c2fd3384b0589ba201d2edbca32/FLAG798213d06 [2023-11-21 22:26:10,963 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986fea01-0b40-460e-9891-6820aaaf83f1/bin/uautomizer-verify-bycVGegfSx/data/ec6425c23/70043c2fd3384b0589ba201d2edbca32 [2023-11-21 22:26:10,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:26:10,967 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:26:10,969 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:26:10,969 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:26:10,974 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:26:10,975 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:26:10" (1/1) ... [2023-11-21 22:26:10,976 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d79b7e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:10, skipping insertion in model container [2023-11-21 22:26:10,977 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:26:10" (1/1) ... [2023-11-21 22:26:11,000 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:26:11,217 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:26:11,227 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:26:11,248 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:26:11,263 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:26:11,263 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:11 WrapperNode [2023-11-21 22:26:11,263 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:26:11,264 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:26:11,264 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:26:11,265 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:26:11,273 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:11" (1/1) ... [2023-11-21 22:26:11,280 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:11" (1/1) ... [2023-11-21 22:26:11,306 INFO L138 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 19, calls inlined = 34, statements flattened = 222 [2023-11-21 22:26:11,307 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:26:11,308 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:26:11,308 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:26:11,308 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:26:11,320 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:11" (1/1) ... [2023-11-21 22:26:11,320 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:11" (1/1) ... [2023-11-21 22:26:11,323 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:11" (1/1) ... [2023-11-21 22:26:11,334 INFO L187 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-21 22:26:11,335 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:11" (1/1) ... [2023-11-21 22:26:11,335 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:11" (1/1) ... [2023-11-21 22:26:11,342 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:11" (1/1) ... [2023-11-21 22:26:11,347 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:11" (1/1) ... [2023-11-21 22:26:11,349 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:11" (1/1) ... [2023-11-21 22:26:11,351 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:11" (1/1) ... [2023-11-21 22:26:11,355 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:26:11,356 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:26:11,356 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:26:11,357 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:26:11,358 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:11" (1/1) ... [2023-11-21 22:26:11,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:11,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986fea01-0b40-460e-9891-6820aaaf83f1/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:11,398 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986fea01-0b40-460e-9891-6820aaaf83f1/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:11,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986fea01-0b40-460e-9891-6820aaaf83f1/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-21 22:26:11,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:26:11,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:26:11,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:26:11,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:26:11,505 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:26:11,507 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:26:11,761 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:26:11,779 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:26:11,780 INFO L308 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-21 22:26:11,781 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:26:11 BoogieIcfgContainer [2023-11-21 22:26:11,781 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:26:11,782 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-21 22:26:11,782 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-21 22:26:11,785 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-21 22:26:11,786 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-21 22:26:11,786 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.11 10:26:10" (1/3) ... [2023-11-21 22:26:11,787 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4be539c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 10:26:11, skipping insertion in model container [2023-11-21 22:26:11,787 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-21 22:26:11,787 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:11" (2/3) ... [2023-11-21 22:26:11,788 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4be539c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 10:26:11, skipping insertion in model container [2023-11-21 22:26:11,788 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-21 22:26:11,788 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:26:11" (3/3) ... [2023-11-21 22:26:11,789 INFO L332 chiAutomizerObserver]: Analyzing ICFG SpamAssassin-loop.i [2023-11-21 22:26:11,849 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-21 22:26:11,850 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-21 22:26:11,850 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-21 22:26:11,850 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-21 22:26:11,850 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-21 22:26:11,850 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-21 22:26:11,850 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-21 22:26:11,851 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-21 22:26:11,855 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 92 states, 91 states have (on average 1.4285714285714286) internal successors, (130), 91 states have internal predecessors, (130), 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 22:26:11,879 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 85 [2023-11-21 22:26:11,880 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 22:26:11,880 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 22:26:11,885 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-21 22:26:11,885 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-21 22:26:11,886 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-21 22:26:11,886 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 92 states, 91 states have (on average 1.4285714285714286) internal successors, (130), 91 states have internal predecessors, (130), 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 22:26:11,893 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 85 [2023-11-21 22:26:11,893 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 22:26:11,893 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 22:26:11,894 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-21 22:26:11,894 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-21 22:26:11,902 INFO L748 eck$LassoCheckResult]: Stem: 46#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 58#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post4#1, main_#t~post5#1, main_#t~post6#1, main_#t~post7#1, main_#t~post8#1, main_#t~post9#1, main_#t~post10#1, main_~len~0#1, main_~i~0#1, main_~j~0#1, main_~bufsize~0#1, main_~limit~0#1;havoc main_~len~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~bufsize~0#1;havoc main_#t~nondet1#1;main_~bufsize~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 10#L31true assume !(main_~bufsize~0#1 < 0);havoc main_#t~nondet2#1;main_~len~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~limit~0#1 := main_~bufsize~0#1 - 4;main_~i~0#1 := 0; 59#L34-2true [2023-11-21 22:26:11,902 INFO L750 eck$LassoCheckResult]: Loop: 59#L34-2true assume !!(main_~i~0#1 < main_~len~0#1);main_~j~0#1 := 0; 23#L35-2true assume !(main_~i~0#1 < main_~len~0#1 && main_~j~0#1 < main_~limit~0#1); 59#L34-2true [2023-11-21 22:26:11,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:11,908 INFO L85 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2023-11-21 22:26:11,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:11,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038386184] [2023-11-21 22:26:11,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:11,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:26:12,016 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:26:12,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:26:12,050 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:26:12,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:12,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1447, now seen corresponding path program 1 times [2023-11-21 22:26:12,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:12,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131321437] [2023-11-21 22:26:12,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:12,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:26:12,062 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:26:12,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:26:12,068 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:26:12,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:12,070 INFO L85 PathProgramCache]: Analyzing trace with hash 28695946, now seen corresponding path program 1 times [2023-11-21 22:26:12,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:12,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606790395] [2023-11-21 22:26:12,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:12,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:12,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:26:12,084 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:26:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:26:12,097 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:26:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:26:12,414 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:26:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:26:12,448 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.11 10:26:12 BoogieIcfgContainer [2023-11-21 22:26:12,448 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-21 22:26:12,449 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:26:12,449 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:26:12,450 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:26:12,450 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:26:11" (3/4) ... [2023-11-21 22:26:12,452 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-21 22:26:12,495 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986fea01-0b40-460e-9891-6820aaaf83f1/bin/uautomizer-verify-bycVGegfSx/witness.graphml [2023-11-21 22:26:12,495 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:26:12,497 INFO L158 Benchmark]: Toolchain (without parser) took 1529.08ms. Allocated memory is still 180.4MB. Free memory was 144.5MB in the beginning and 93.8MB in the end (delta: 50.7MB). Peak memory consumption was 48.6MB. Max. memory is 16.1GB. [2023-11-21 22:26:12,498 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 119.5MB. Free memory is still 87.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:26:12,498 INFO L158 Benchmark]: CACSL2BoogieTranslator took 294.89ms. Allocated memory is still 180.4MB. Free memory was 144.5MB in the beginning and 142.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:26:12,499 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.71ms. Allocated memory is still 180.4MB. Free memory was 142.8MB in the beginning and 141.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:26:12,499 INFO L158 Benchmark]: Boogie Preprocessor took 47.68ms. Allocated memory is still 180.4MB. Free memory was 140.8MB in the beginning and 138.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:26:12,500 INFO L158 Benchmark]: RCFGBuilder took 425.41ms. Allocated memory is still 180.4MB. Free memory was 138.6MB in the beginning and 123.2MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-21 22:26:12,501 INFO L158 Benchmark]: BuchiAutomizer took 666.23ms. Allocated memory is still 180.4MB. Free memory was 123.2MB in the beginning and 95.5MB in the end (delta: 27.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-21 22:26:12,501 INFO L158 Benchmark]: Witness Printer took 46.16ms. Allocated memory is still 180.4MB. Free memory was 95.5MB in the beginning and 93.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:26:12,504 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 119.5MB. Free memory is still 87.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 294.89ms. Allocated memory is still 180.4MB. Free memory was 144.5MB in the beginning and 142.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.71ms. Allocated memory is still 180.4MB. Free memory was 142.8MB in the beginning and 141.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.68ms. Allocated memory is still 180.4MB. Free memory was 140.8MB in the beginning and 138.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 425.41ms. Allocated memory is still 180.4MB. Free memory was 138.6MB in the beginning and 123.2MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * BuchiAutomizer took 666.23ms. Allocated memory is still 180.4MB. Free memory was 123.2MB in the beginning and 95.5MB in the end (delta: 27.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 46.16ms. Allocated memory is still 180.4MB. Free memory was 95.5MB in the beginning and 93.8MB in the end (delta: 1.7MB). 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 0.5s 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: 34]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L26] int len; [L27] int i; [L28] int j; [L29] int bufsize; [L30] bufsize = __VERIFIER_nondet_int() [L31] COND FALSE !(bufsize < 0) [L32] len = __VERIFIER_nondet_int() [L33] int limit = bufsize - 4; [L34] i = 0 VAL [bufsize=0, i=0, limit=-4] Loop: [L34] COND TRUE i < len [L35] j = 0 [L35] COND FALSE !(i < len && j < limit) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 34]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L26] int len; [L27] int i; [L28] int j; [L29] int bufsize; [L30] bufsize = __VERIFIER_nondet_int() [L31] COND FALSE !(bufsize < 0) [L32] len = __VERIFIER_nondet_int() [L33] int limit = bufsize - 4; [L34] i = 0 VAL [bufsize=0, i=0, limit=-4] Loop: [L34] COND TRUE i < len [L35] j = 0 [L35] COND FALSE !(i < len && j < limit) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-21 22:26:12,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986fea01-0b40-460e-9891-6820aaaf83f1/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)