./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/Flip.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_60b34531-589e-4983-bf7a-468fbf2ca585/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b34531-589e-4983-bf7a-468fbf2ca585/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_60b34531-589e-4983-bf7a-468fbf2ca585/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b34531-589e-4983-bf7a-468fbf2ca585/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Flip.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b34531-589e-4983-bf7a-468fbf2ca585/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_60b34531-589e-4983-bf7a-468fbf2ca585/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 d9e2051c5b6571a6a73804cb724a9fb9a88e5e404b5e850e3a8c166e2eba4aad --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:47:58,007 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:47:58,086 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b34531-589e-4983-bf7a-468fbf2ca585/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-28 04:47:58,091 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:47:58,091 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:47:58,129 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:47:58,130 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:47:58,130 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:47:58,132 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:47:58,132 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:47:58,133 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:47:58,133 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:47:58,133 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:47:58,133 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-28 04:47:58,133 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-28 04:47:58,133 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-28 04:47:58,133 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-28 04:47:58,135 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-28 04:47:58,135 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-28 04:47:58,135 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:47:58,135 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-28 04:47:58,136 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:47:58,136 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:47:58,136 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-28 04:47:58,136 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-28 04:47:58,136 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-28 04:47:58,136 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:47:58,136 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:47:58,136 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-28 04:47:58,136 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:47:58,136 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:47:58,136 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:47:58,136 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:47:58,137 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:47:58,137 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL_NO_AM [2024-11-28 04:47:58,137 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-28 04:47:58,137 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_60b34531-589e-4983-bf7a-468fbf2ca585/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 -> d9e2051c5b6571a6a73804cb724a9fb9a88e5e404b5e850e3a8c166e2eba4aad [2024-11-28 04:47:58,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:47:58,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:47:58,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:47:58,457 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:47:58,457 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:47:58,458 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b34531-589e-4983-bf7a-468fbf2ca585/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/termination-restricted-15/Flip.c [2024-11-28 04:48:01,527 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b34531-589e-4983-bf7a-468fbf2ca585/bin/uautomizer-verify-aQ6SnzHsRB/data/8f5dac348/9ace8d5053bf4ee6a9fdf83e6d9136a4/FLAGbe9f2063d [2024-11-28 04:48:01,762 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:48:01,763 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b34531-589e-4983-bf7a-468fbf2ca585/sv-benchmarks/c/termination-restricted-15/Flip.c [2024-11-28 04:48:01,771 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b34531-589e-4983-bf7a-468fbf2ca585/bin/uautomizer-verify-aQ6SnzHsRB/data/8f5dac348/9ace8d5053bf4ee6a9fdf83e6d9136a4/FLAGbe9f2063d [2024-11-28 04:48:01,791 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b34531-589e-4983-bf7a-468fbf2ca585/bin/uautomizer-verify-aQ6SnzHsRB/data/8f5dac348/9ace8d5053bf4ee6a9fdf83e6d9136a4 [2024-11-28 04:48:01,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:48:01,795 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:48:01,797 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:48:01,797 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:48:01,802 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:48:01,803 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:48:01" (1/1) ... [2024-11-28 04:48:01,805 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44ea381e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:01, skipping insertion in model container [2024-11-28 04:48:01,806 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:48:01" (1/1) ... [2024-11-28 04:48:01,823 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:48:02,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:48:02,011 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:48:02,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:48:02,041 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:48:02,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:02 WrapperNode [2024-11-28 04:48:02,042 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:48:02,043 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:48:02,043 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:48:02,043 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:48:02,058 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:02" (1/1) ... [2024-11-28 04:48:02,062 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:02" (1/1) ... [2024-11-28 04:48:02,084 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2024-11-28 04:48:02,085 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:48:02,085 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:48:02,085 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:48:02,085 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:48:02,096 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:02" (1/1) ... [2024-11-28 04:48:02,096 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:02" (1/1) ... [2024-11-28 04:48:02,098 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:02" (1/1) ... [2024-11-28 04:48:02,104 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-28 04:48:02,105 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:02" (1/1) ... [2024-11-28 04:48:02,105 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:02" (1/1) ... [2024-11-28 04:48:02,107 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:02" (1/1) ... [2024-11-28 04:48:02,108 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:02" (1/1) ... [2024-11-28 04:48:02,116 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:02" (1/1) ... [2024-11-28 04:48:02,117 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:02" (1/1) ... [2024-11-28 04:48:02,117 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:02" (1/1) ... [2024-11-28 04:48:02,118 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:48:02,121 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:48:02,122 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:48:02,122 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:48:02,124 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:02" (1/1) ... [2024-11-28 04:48:02,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 04:48:02,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b34531-589e-4983-bf7a-468fbf2ca585/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:48:02,167 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b34531-589e-4983-bf7a-468fbf2ca585/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 04:48:02,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b34531-589e-4983-bf7a-468fbf2ca585/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-28 04:48:02,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:48:02,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:48:02,280 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:48:02,283 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:48:02,342 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-28 04:48:02,343 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:48:02,355 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:48:02,357 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 04:48:02,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:48:02 BoogieIcfgContainer [2024-11-28 04:48:02,358 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:48:02,359 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-28 04:48:02,360 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-28 04:48:02,367 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-28 04:48:02,368 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-28 04:48:02,368 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 04:48:01" (1/3) ... [2024-11-28 04:48:02,370 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@519b161c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 04:48:02, skipping insertion in model container [2024-11-28 04:48:02,370 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-28 04:48:02,370 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:02" (2/3) ... [2024-11-28 04:48:02,371 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@519b161c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 04:48:02, skipping insertion in model container [2024-11-28 04:48:02,372 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-28 04:48:02,373 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:48:02" (3/3) ... [2024-11-28 04:48:02,374 INFO L363 chiAutomizerObserver]: Analyzing ICFG Flip.c [2024-11-28 04:48:02,447 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-28 04:48:02,447 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-28 04:48:02,447 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-28 04:48:02,447 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-28 04:48:02,447 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-28 04:48:02,447 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-28 04:48:02,448 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-28 04:48:02,448 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-28 04:48:02,452 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 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 04:48:02,471 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-28 04:48:02,472 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 04:48:02,472 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 04:48:02,477 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-28 04:48:02,477 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-28 04:48:02,478 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-28 04:48:02,478 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 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 04:48:02,480 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-28 04:48:02,480 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 04:48:02,480 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 04:48:02,481 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-28 04:48:02,481 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-28 04:48:02,488 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0;" [2024-11-28 04:48:02,488 INFO L749 eck$LassoCheckResult]: Loop: "assume 0 != main_~i~0#1 && 0 != main_~j~0#1;" "main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1;" [2024-11-28 04:48:02,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:48:02,495 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-11-28 04:48:02,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 04:48:02,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094665124] [2024-11-28 04:48:02,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:02,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:48:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:48:02,589 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:48:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:48:02,616 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 04:48:02,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:48:02,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1221, now seen corresponding path program 1 times [2024-11-28 04:48:02,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 04:48:02,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201175587] [2024-11-28 04:48:02,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:02,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:48:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:48:02,643 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:48:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:48:02,654 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 04:48:02,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:48:02,657 INFO L85 PathProgramCache]: Analyzing trace with hash 925703, now seen corresponding path program 1 times [2024-11-28 04:48:02,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 04:48:02,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669575488] [2024-11-28 04:48:02,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:02,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:48:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:48:02,677 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:48:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:48:02,687 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 04:48:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:48:02,825 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:48:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:48:02,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 04:48:02 BoogieIcfgContainer [2024-11-28 04:48:02,857 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-28 04:48:02,859 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 04:48:02,859 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 04:48:02,859 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 04:48:02,861 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:48:02" (3/4) ... [2024-11-28 04:48:02,863 INFO L143 WitnessPrinter]: Generating witness for non-termination counterexample [2024-11-28 04:48:02,905 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b34531-589e-4983-bf7a-468fbf2ca585/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 04:48:02,905 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 04:48:02,907 INFO L158 Benchmark]: Toolchain (without parser) took 1111.68ms. Allocated memory is still 117.4MB. Free memory was 93.1MB in the beginning and 55.2MB in the end (delta: 37.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-28 04:48:02,909 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 117.4MB. Free memory was 73.1MB in the beginning and 73.0MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:48:02,909 INFO L158 Benchmark]: CACSL2BoogieTranslator took 245.46ms. Allocated memory is still 117.4MB. Free memory was 92.8MB in the beginning and 83.0MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:48:02,910 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.86ms. Allocated memory is still 117.4MB. Free memory was 83.0MB in the beginning and 82.1MB in the end (delta: 861.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:48:02,911 INFO L158 Benchmark]: Boogie Preprocessor took 33.28ms. Allocated memory is still 117.4MB. Free memory was 82.1MB in the beginning and 81.2MB in the end (delta: 915.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:48:02,912 INFO L158 Benchmark]: RCFGBuilder took 237.49ms. Allocated memory is still 117.4MB. Free memory was 81.2MB in the beginning and 73.2MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:48:02,913 INFO L158 Benchmark]: BuchiAutomizer took 498.19ms. Allocated memory is still 117.4MB. Free memory was 72.9MB in the beginning and 57.1MB in the end (delta: 15.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:48:02,913 INFO L158 Benchmark]: Witness Printer took 46.70ms. Allocated memory is still 117.4MB. Free memory was 56.9MB in the beginning and 55.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:48:02,916 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 117.4MB. Free memory was 73.1MB in the beginning and 73.0MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 245.46ms. Allocated memory is still 117.4MB. Free memory was 92.8MB in the beginning and 83.0MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.86ms. Allocated memory is still 117.4MB. Free memory was 83.0MB in the beginning and 82.1MB in the end (delta: 861.1kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 33.28ms. Allocated memory is still 117.4MB. Free memory was 82.1MB in the beginning and 81.2MB in the end (delta: 915.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 237.49ms. Allocated memory is still 117.4MB. Free memory was 81.2MB in the beginning and 73.2MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 498.19ms. Allocated memory is still 117.4MB. Free memory was 72.9MB in the beginning and 57.1MB in the end (delta: 15.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Witness Printer took 46.70ms. Allocated memory is still 117.4MB. Free memory was 56.9MB in the beginning and 55.2MB in the end (delta: 1.7MB). 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 i; [L7] int j; [L8] int t; [L9] i = __VERIFIER_nondet_int() [L10] j = __VERIFIER_nondet_int() [L11] t = 0 Loop: [L13] COND TRUE i != 0 && j != 0 [L14] t = i [L15] i = j [L16] j = t 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 i; [L7] int j; [L8] int t; [L9] i = __VERIFIER_nondet_int() [L10] j = __VERIFIER_nondet_int() [L11] t = 0 Loop: [L13] COND TRUE i != 0 && j != 0 [L14] t = i [L15] i = j [L16] j = t End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2024-11-28 04:48:02,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b34531-589e-4983-bf7a-468fbf2ca585/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)