./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/GCD-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_94298610-cd98-48f0-8318-51ea43d78966/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94298610-cd98-48f0-8318-51ea43d78966/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_94298610-cd98-48f0-8318-51ea43d78966/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94298610-cd98-48f0-8318-51ea43d78966/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/GCD-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94298610-cd98-48f0-8318-51ea43d78966/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94298610-cd98-48f0-8318-51ea43d78966/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 64bit --witnessprinter.graph.data.programhash 5f52b905489768d11946f99b46b2e235c97efbb56a51bc32b8b274637f7dd5d8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:22:26,146 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:22:26,217 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94298610-cd98-48f0-8318-51ea43d78966/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-28 03:22:26,224 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:22:26,224 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:22:26,256 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:22:26,256 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:22:26,256 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:22:26,257 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:22:26,257 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:22:26,257 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:22:26,257 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:22:26,257 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:22:26,257 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-28 03:22:26,258 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-28 03:22:26,258 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-28 03:22:26,258 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-28 03:22:26,258 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-28 03:22:26,258 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-28 03:22:26,258 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:22:26,258 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-28 03:22:26,258 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:22:26,258 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:22:26,258 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-28 03:22:26,259 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-28 03:22:26,259 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-28 03:22:26,259 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:22:26,259 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:22:26,259 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-28 03:22:26,259 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:22:26,259 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:22:26,259 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:22:26,259 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:22:26,259 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:22:26,260 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL_NO_AM [2024-11-28 03:22:26,260 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-28 03:22:26,260 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_94298610-cd98-48f0-8318-51ea43d78966/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5f52b905489768d11946f99b46b2e235c97efbb56a51bc32b8b274637f7dd5d8 [2024-11-28 03:22:26,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:22:26,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:22:26,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:22:26,597 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:22:26,597 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:22:26,598 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94298610-cd98-48f0-8318-51ea43d78966/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/termination-restricted-15/GCD-1.c [2024-11-28 03:22:29,656 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94298610-cd98-48f0-8318-51ea43d78966/bin/uautomizer-verify-aQ6SnzHsRB/data/91f98f5b8/94d3d65923a3486d8043f6681481dfe2/FLAG8d9610da2 [2024-11-28 03:22:29,907 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:22:29,910 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94298610-cd98-48f0-8318-51ea43d78966/sv-benchmarks/c/termination-restricted-15/GCD-1.c [2024-11-28 03:22:29,918 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94298610-cd98-48f0-8318-51ea43d78966/bin/uautomizer-verify-aQ6SnzHsRB/data/91f98f5b8/94d3d65923a3486d8043f6681481dfe2/FLAG8d9610da2 [2024-11-28 03:22:29,943 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94298610-cd98-48f0-8318-51ea43d78966/bin/uautomizer-verify-aQ6SnzHsRB/data/91f98f5b8/94d3d65923a3486d8043f6681481dfe2 [2024-11-28 03:22:29,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:22:29,946 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:22:29,948 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:22:29,948 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:22:29,954 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:22:29,955 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:22:29" (1/1) ... [2024-11-28 03:22:29,958 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ca14a0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:22:29, skipping insertion in model container [2024-11-28 03:22:29,958 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:22:29" (1/1) ... [2024-11-28 03:22:29,974 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:22:30,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:22:30,157 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:22:30,172 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:22:30,184 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:22:30,185 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:22:30 WrapperNode [2024-11-28 03:22:30,185 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:22:30,186 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:22:30,187 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:22:30,187 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:22:30,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:22:30" (1/1) ... [2024-11-28 03:22:30,196 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:22:30" (1/1) ... [2024-11-28 03:22:30,211 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2024-11-28 03:22:30,212 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:22:30,213 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:22:30,213 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:22:30,214 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:22:30,222 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:22:30" (1/1) ... [2024-11-28 03:22:30,222 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:22:30" (1/1) ... [2024-11-28 03:22:30,223 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:22:30" (1/1) ... [2024-11-28 03:22:30,230 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-28 03:22:30,231 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:22:30" (1/1) ... [2024-11-28 03:22:30,231 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:22:30" (1/1) ... [2024-11-28 03:22:30,233 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:22:30" (1/1) ... [2024-11-28 03:22:30,233 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:22:30" (1/1) ... [2024-11-28 03:22:30,239 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:22:30" (1/1) ... [2024-11-28 03:22:30,240 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:22:30" (1/1) ... [2024-11-28 03:22:30,241 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:22:30" (1/1) ... [2024-11-28 03:22:30,241 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:22:30,244 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:22:30,245 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:22:30,245 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:22:30,246 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:22:30" (1/1) ... [2024-11-28 03:22:30,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 03:22:30,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94298610-cd98-48f0-8318-51ea43d78966/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:22:30,283 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94298610-cd98-48f0-8318-51ea43d78966/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 03:22:30,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94298610-cd98-48f0-8318-51ea43d78966/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-28 03:22:30,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:22:30,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:22:30,380 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:22:30,381 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:22:30,457 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-28 03:22:30,458 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:22:30,471 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:22:30,472 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 03:22:30,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:22:30 BoogieIcfgContainer [2024-11-28 03:22:30,472 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:22:30,473 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-28 03:22:30,473 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-28 03:22:30,479 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-28 03:22:30,480 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-28 03:22:30,480 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:22:29" (1/3) ... [2024-11-28 03:22:30,481 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@a0f9161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:22:30, skipping insertion in model container [2024-11-28 03:22:30,482 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-28 03:22:30,482 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:22:30" (2/3) ... [2024-11-28 03:22:30,482 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@a0f9161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:22:30, skipping insertion in model container [2024-11-28 03:22:30,483 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-28 03:22:30,483 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:22:30" (3/3) ... [2024-11-28 03:22:30,484 INFO L363 chiAutomizerObserver]: Analyzing ICFG GCD-1.c [2024-11-28 03:22:30,553 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-28 03:22:30,553 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-28 03:22:30,553 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-28 03:22:30,553 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-28 03:22:30,554 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-28 03:22:30,554 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-28 03:22:30,554 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-28 03:22:30,555 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-28 03:22:30,559 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 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) [2024-11-28 03:22:30,575 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2024-11-28 03:22:30,576 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 03:22:30,576 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 03:22:30,582 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-28 03:22:30,583 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-28 03:22:30,583 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-28 03:22:30,584 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 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) [2024-11-28 03:22:30,585 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2024-11-28 03:22:30,585 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 03:22:30,586 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 03:22:30,586 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-28 03:22:30,587 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-28 03:22:30,594 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1, main_~tmp~0#1, main_~xtmp~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~tmp~0#1;havoc main_~xtmp~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" [2024-11-28 03:22:30,594 INFO L749 eck$LassoCheckResult]: Loop: "assume 0 != main_~y~0#1;" "main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1;" "assume main_~x~0#1 <= 0 || main_~y~0#1 <= 0;main_~y~0#1 := 0;" "main_~y~0#1 := main_~xtmp~0#1;main_~x~0#1 := main_~tmp~0#1;" [2024-11-28 03:22:30,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:22:30,603 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-11-28 03:22:30,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 03:22:30,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276198170] [2024-11-28 03:22:30,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:22:30,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:22:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:22:30,689 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:22:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:22:30,709 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 03:22:30,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:22:30,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1173882, now seen corresponding path program 1 times [2024-11-28 03:22:30,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 03:22:30,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927031510] [2024-11-28 03:22:30,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:22:30,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:22:30,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:22:30,734 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:22:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:22:30,747 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 03:22:30,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:22:30,750 INFO L85 PathProgramCache]: Analyzing trace with hash 889601084, now seen corresponding path program 1 times [2024-11-28 03:22:30,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 03:22:30,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231087419] [2024-11-28 03:22:30,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:22:30,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:22:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:22:30,766 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:22:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:22:30,776 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 03:22:30,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:22:30,967 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:22:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:22:30,990 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:22:30 BoogieIcfgContainer [2024-11-28 03:22:30,990 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-28 03:22:30,991 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 03:22:30,991 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 03:22:30,991 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 03:22:30,992 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:22:30" (3/4) ... [2024-11-28 03:22:30,994 INFO L143 WitnessPrinter]: Generating witness for non-termination counterexample [2024-11-28 03:22:31,028 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94298610-cd98-48f0-8318-51ea43d78966/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 03:22:31,028 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 03:22:31,032 INFO L158 Benchmark]: Toolchain (without parser) took 1083.01ms. Allocated memory is still 117.4MB. Free memory was 93.0MB in the beginning and 52.6MB in the end (delta: 40.4MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2024-11-28 03:22:31,035 INFO L158 Benchmark]: CDTParser took 1.36ms. Allocated memory is still 117.4MB. Free memory was 72.9MB in the beginning and 72.8MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:22:31,035 INFO L158 Benchmark]: CACSL2BoogieTranslator took 237.89ms. Allocated memory is still 117.4MB. Free memory was 93.0MB in the beginning and 83.0MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:22:31,035 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.13ms. Allocated memory is still 117.4MB. Free memory was 83.0MB in the beginning and 82.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:22:31,036 INFO L158 Benchmark]: Boogie Preprocessor took 28.96ms. Allocated memory is still 117.4MB. Free memory was 82.0MB in the beginning and 81.1MB in the end (delta: 839.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:22:31,036 INFO L158 Benchmark]: RCFGBuilder took 228.05ms. Allocated memory is still 117.4MB. Free memory was 81.1MB in the beginning and 72.3MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:22:31,036 INFO L158 Benchmark]: BuchiAutomizer took 517.43ms. Allocated memory is still 117.4MB. Free memory was 72.3MB in the beginning and 54.3MB in the end (delta: 18.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-28 03:22:31,039 INFO L158 Benchmark]: Witness Printer took 37.23ms. Allocated memory is still 117.4MB. Free memory was 54.1MB in the beginning and 52.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:22:31,041 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.36ms. Allocated memory is still 117.4MB. Free memory was 72.9MB in the beginning and 72.8MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 237.89ms. Allocated memory is still 117.4MB. Free memory was 93.0MB in the beginning and 83.0MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.13ms. Allocated memory is still 117.4MB. Free memory was 83.0MB in the beginning and 82.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.96ms. Allocated memory is still 117.4MB. Free memory was 82.0MB in the beginning and 81.1MB in the end (delta: 839.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 228.05ms. Allocated memory is still 117.4MB. Free memory was 81.1MB in the beginning and 72.3MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 517.43ms. Allocated memory is still 117.4MB. Free memory was 72.3MB in the beginning and 54.3MB in the end (delta: 18.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 37.23ms. Allocated memory is still 117.4MB. Free memory was 54.1MB in the beginning and 52.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.4s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 13]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L6] int x; [L7] int y; [L8] int tmp; [L9] int xtmp; [L10] x = __VERIFIER_nondet_int() [L11] y = __VERIFIER_nondet_int() Loop: [L13] COND TRUE y != 0 [L14] tmp = y [L15] xtmp = x [L17] COND TRUE x <= 0 || y <= 0 [L18] y = 0 [L29] y = xtmp [L30] x = tmp End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 13]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int x; [L7] int y; [L8] int tmp; [L9] int xtmp; [L10] x = __VERIFIER_nondet_int() [L11] y = __VERIFIER_nondet_int() Loop: [L13] COND TRUE y != 0 [L14] tmp = y [L15] xtmp = x [L17] COND TRUE x <= 0 || y <= 0 [L18] y = 0 [L29] y = xtmp [L30] x = tmp End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2024-11-28 03:22:31,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94298610-cd98-48f0-8318-51ea43d78966/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)