./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-nla/knuth-nosqrt-both-t.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0f1cf8-2ead-47f2-8fa7-9057adda9b43/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0f1cf8-2ead-47f2-8fa7-9057adda9b43/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0f1cf8-2ead-47f2-8fa7-9057adda9b43/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0f1cf8-2ead-47f2-8fa7-9057adda9b43/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-nla/knuth-nosqrt-both-t.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0f1cf8-2ead-47f2-8fa7-9057adda9b43/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0f1cf8-2ead-47f2-8fa7-9057adda9b43/bin/uautomizer-verify-aQ6SnzHsRB --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 32de40082bb50994df68fc070d8f806f486ffbb15d97e7d38cb4212d727a4ac4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:12:26,379 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:12:26,465 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0f1cf8-2ead-47f2-8fa7-9057adda9b43/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-11-27 20:12:26,470 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:12:26,471 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:12:26,516 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:12:26,517 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:12:26,518 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:12:26,518 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:12:26,518 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:12:26,519 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:12:26,520 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:12:26,520 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:12:26,520 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-27 20:12:26,520 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-27 20:12:26,520 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-27 20:12:26,520 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-27 20:12:26,522 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-27 20:12:26,522 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-27 20:12:26,522 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:12:26,522 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-27 20:12:26,522 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:12:26,522 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:12:26,523 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:12:26,523 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:12:26,523 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-27 20:12:26,523 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-27 20:12:26,523 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-27 20:12:26,523 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 20:12:26,523 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:12:26,523 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:12:26,523 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-27 20:12:26,524 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:12:26,524 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:12:26,524 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:12:26,524 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:12:26,524 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:12:26,524 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL_NO_AM [2024-11-27 20:12:26,524 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-27 20:12:26,524 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_4b0f1cf8-2ead-47f2-8fa7-9057adda9b43/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 32de40082bb50994df68fc070d8f806f486ffbb15d97e7d38cb4212d727a4ac4 [2024-11-27 20:12:26,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:12:26,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:12:26,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:12:26,891 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:12:26,891 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:12:26,892 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0f1cf8-2ead-47f2-8fa7-9057adda9b43/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/termination-nla/knuth-nosqrt-both-t.i [2024-11-27 20:12:29,828 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0f1cf8-2ead-47f2-8fa7-9057adda9b43/bin/uautomizer-verify-aQ6SnzHsRB/data/a7846a37e/132963e6e74a4fcf9a5e1492669e58b9/FLAG14ce6f2e8 [2024-11-27 20:12:30,171 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:12:30,172 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0f1cf8-2ead-47f2-8fa7-9057adda9b43/sv-benchmarks/c/termination-nla/knuth-nosqrt-both-t.i [2024-11-27 20:12:30,187 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0f1cf8-2ead-47f2-8fa7-9057adda9b43/bin/uautomizer-verify-aQ6SnzHsRB/data/a7846a37e/132963e6e74a4fcf9a5e1492669e58b9/FLAG14ce6f2e8 [2024-11-27 20:12:30,211 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0f1cf8-2ead-47f2-8fa7-9057adda9b43/bin/uautomizer-verify-aQ6SnzHsRB/data/a7846a37e/132963e6e74a4fcf9a5e1492669e58b9 [2024-11-27 20:12:30,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:12:30,215 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:12:30,217 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:12:30,217 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:12:30,222 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:12:30,223 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:12:30" (1/1) ... [2024-11-27 20:12:30,223 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a28b34d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:12:30, skipping insertion in model container [2024-11-27 20:12:30,224 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:12:30" (1/1) ... [2024-11-27 20:12:30,239 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:12:30,425 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:12:30,431 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:12:30,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:12:30,474 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:12:30,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:12:30 WrapperNode [2024-11-27 20:12:30,475 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:12:30,476 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:12:30,476 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:12:30,476 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:12:30,485 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:12:30" (1/1) ... [2024-11-27 20:12:30,493 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:12:30" (1/1) ... [2024-11-27 20:12:30,514 INFO L138 Inliner]: procedures = 5, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 57 [2024-11-27 20:12:30,515 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:12:30,515 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:12:30,515 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:12:30,515 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:12:30,527 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:12:30" (1/1) ... [2024-11-27 20:12:30,528 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:12:30" (1/1) ... [2024-11-27 20:12:30,533 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:12:30" (1/1) ... [2024-11-27 20:12:30,542 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-27 20:12:30,542 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:12:30" (1/1) ... [2024-11-27 20:12:30,542 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:12:30" (1/1) ... [2024-11-27 20:12:30,547 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:12:30" (1/1) ... [2024-11-27 20:12:30,548 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:12:30" (1/1) ... [2024-11-27 20:12:30,555 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:12:30" (1/1) ... [2024-11-27 20:12:30,556 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:12:30" (1/1) ... [2024-11-27 20:12:30,557 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:12:30" (1/1) ... [2024-11-27 20:12:30,558 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:12:30,561 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:12:30,561 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:12:30,561 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:12:30,564 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:12:30" (1/1) ... [2024-11-27 20:12:30,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 20:12:30,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0f1cf8-2ead-47f2-8fa7-9057adda9b43/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:12:30,618 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0f1cf8-2ead-47f2-8fa7-9057adda9b43/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-27 20:12:30,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0f1cf8-2ead-47f2-8fa7-9057adda9b43/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-27 20:12:30,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:12:30,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:12:30,705 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:12:30,707 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:12:30,943 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-27 20:12:30,943 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:12:30,952 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:12:30,952 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 20:12:30,952 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:12:30 BoogieIcfgContainer [2024-11-27 20:12:30,953 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:12:30,953 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-27 20:12:30,953 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-27 20:12:30,960 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-27 20:12:30,960 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-27 20:12:30,961 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.11 08:12:30" (1/3) ... [2024-11-27 20:12:30,962 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4dafcd18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.11 08:12:30, skipping insertion in model container [2024-11-27 20:12:30,962 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-27 20:12:30,962 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:12:30" (2/3) ... [2024-11-27 20:12:30,965 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4dafcd18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.11 08:12:30, skipping insertion in model container [2024-11-27 20:12:30,966 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-27 20:12:30,966 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:12:30" (3/3) ... [2024-11-27 20:12:30,967 INFO L363 chiAutomizerObserver]: Analyzing ICFG knuth-nosqrt-both-t.i [2024-11-27 20:12:31,042 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-27 20:12:31,044 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-27 20:12:31,044 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-27 20:12:31,044 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-27 20:12:31,045 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-27 20:12:31,045 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-27 20:12:31,045 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-27 20:12:31,045 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-27 20:12:31,053 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 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) [2024-11-27 20:12:31,073 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-11-27 20:12:31,075 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-27 20:12:31,075 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-27 20:12:31,083 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-11-27 20:12:31,083 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-27 20:12:31,084 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-27 20:12:31,085 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 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) [2024-11-27 20:12:31,087 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-11-27 20:12:31,087 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-27 20:12:31,087 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-27 20:12:31,088 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-11-27 20:12:31,088 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-27 20:12:31,096 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_~s~0#1, main_~a~0#1, main_~r~0#1, main_~k~0#1, main_~q~0#1, main_~d~0#1, main_~n~0#1, main_~t~0#1;havoc main_~s~0#1;havoc main_~a~0#1;havoc main_~r~0#1;havoc main_~k~0#1;havoc main_~q~0#1;havoc main_~d~0#1;havoc main_~n~0#1;havoc main_~t~0#1;havoc main_#t~nondet1#1;main_~s~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;main_~a~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;" "assume !(main_~s~0#1 % 4294967296 >= 8192);" "assume !(main_~a~0#1 % 4294967296 <= 2);main_~n~0#1 := main_~s~0#1 * main_~s~0#1;main_~d~0#1 := main_~a~0#1;main_~r~0#1 := main_~n~0#1 % 4294967296 % (main_~d~0#1 % 4294967296);main_~t~0#1 := 0;main_~k~0#1 := main_~n~0#1 % 4294967296 % ((main_~d~0#1 - 2) % 4294967296);main_~q~0#1 := 4 * (main_~n~0#1 % 4294967296 / ((main_~d~0#1 - 2) % 4294967296) - main_~n~0#1 % 4294967296 / (main_~d~0#1 % 4294967296));" [2024-11-27 20:12:31,096 INFO L749 eck$LassoCheckResult]: Loop: "assume !!((main_~s~0#1 + main_~d~0#1 * main_~k~0#1 - main_~d~0#1 * main_~t~0#1 - main_~a~0#1 * main_~k~0#1 + main_~a~0#1 * main_~t~0#1) % 4294967296 >= main_~d~0#1 % 4294967296 && 0 != main_~r~0#1 % 4294967296);" "assume (2 * main_~r~0#1 + main_~q~0#1) % 4294967296 < main_~k~0#1 % 4294967296;main_~t~0#1 := main_~r~0#1;main_~r~0#1 := 2 + (2 * main_~r~0#1 - main_~k~0#1 + main_~q~0#1 + main_~d~0#1);main_~k~0#1 := main_~t~0#1;main_~q~0#1 := 4 + main_~q~0#1;main_~d~0#1 := 2 + main_~d~0#1;" [2024-11-27 20:12:31,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:12:31,102 INFO L85 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2024-11-27 20:12:31,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 20:12:31,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607561657] [2024-11-27 20:12:31,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:12:31,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:12:31,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 20:12:31,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1536059779] [2024-11-27 20:12:31,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:12:31,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:12:31,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0f1cf8-2ead-47f2-8fa7-9057adda9b43/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:12:31,290 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0f1cf8-2ead-47f2-8fa7-9057adda9b43/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:12:31,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0f1cf8-2ead-47f2-8fa7-9057adda9b43/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:12:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:12:31,350 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 20:12:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:12:31,373 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 20:12:31,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:12:31,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1764, now seen corresponding path program 1 times [2024-11-27 20:12:31,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 20:12:31,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534679841] [2024-11-27 20:12:31,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:12:31,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:12:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 20:12:31,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1657042836] [2024-11-27 20:12:31,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:12:31,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:12:31,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0f1cf8-2ead-47f2-8fa7-9057adda9b43/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:12:31,399 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0f1cf8-2ead-47f2-8fa7-9057adda9b43/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:12:31,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0f1cf8-2ead-47f2-8fa7-9057adda9b43/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:12:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:12:31,436 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 20:12:31,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:12:31,454 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 20:12:31,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:12:31,455 INFO L85 PathProgramCache]: Analyzing trace with hash 889571595, now seen corresponding path program 1 times [2024-11-27 20:12:31,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 20:12:31,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592096875] [2024-11-27 20:12:31,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:12:31,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:12:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 20:12:31,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [155495516] [2024-11-27 20:12:31,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:12:31,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:12:31,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0f1cf8-2ead-47f2-8fa7-9057adda9b43/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:12:31,572 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0f1cf8-2ead-47f2-8fa7-9057adda9b43/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:12:31,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0f1cf8-2ead-47f2-8fa7-9057adda9b43/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process