./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loops/while_infinite_loop_2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4fdb89-364a-4809-b098-e4c99d1589d6/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4fdb89-364a-4809-b098-e4c99d1589d6/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_7b4fdb89-364a-4809-b098-e4c99d1589d6/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4fdb89-364a-4809-b098-e4c99d1589d6/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loops/while_infinite_loop_2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4fdb89-364a-4809-b098-e4c99d1589d6/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_7b4fdb89-364a-4809-b098-e4c99d1589d6/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 2285a0532f76c71ed3da856eea9f62f11be9df4ff1d205bf57c17e8ec94f6df8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:37:45,404 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:37:45,490 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4fdb89-364a-4809-b098-e4c99d1589d6/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-11-28 03:37:45,498 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:37:45,501 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:37:45,537 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:37:45,538 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:37:45,538 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:37:45,539 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:37:45,539 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:37:45,543 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:37:45,543 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:37:45,543 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:37:45,543 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-28 03:37:45,543 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-28 03:37:45,543 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-28 03:37:45,544 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-28 03:37:45,544 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-28 03:37:45,544 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-28 03:37:45,544 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:37:45,544 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-28 03:37:45,544 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:37:45,544 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:37:45,544 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:37:45,544 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:37:45,544 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-28 03:37:45,544 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-28 03:37:45,544 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-28 03:37:45,544 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:37:45,545 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:37:45,545 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:37:45,545 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-28 03:37:45,545 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:37:45,545 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:37:45,545 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:37:45,545 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:37:45,545 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:37:45,545 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL_NO_AM [2024-11-28 03:37:45,545 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-28 03:37:45,545 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_7b4fdb89-364a-4809-b098-e4c99d1589d6/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 -> 2285a0532f76c71ed3da856eea9f62f11be9df4ff1d205bf57c17e8ec94f6df8 [2024-11-28 03:37:45,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:37:45,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:37:45,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:37:45,834 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:37:45,834 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:37:45,835 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4fdb89-364a-4809-b098-e4c99d1589d6/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/loops/while_infinite_loop_2.c [2024-11-28 03:37:48,859 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4fdb89-364a-4809-b098-e4c99d1589d6/bin/uautomizer-verify-aQ6SnzHsRB/data/acd5a0303/1b681deba77b402d82e40f232148b3b9/FLAG724b761b0 [2024-11-28 03:37:49,116 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:37:49,116 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4fdb89-364a-4809-b098-e4c99d1589d6/sv-benchmarks/c/loops/while_infinite_loop_2.c [2024-11-28 03:37:49,125 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4fdb89-364a-4809-b098-e4c99d1589d6/bin/uautomizer-verify-aQ6SnzHsRB/data/acd5a0303/1b681deba77b402d82e40f232148b3b9/FLAG724b761b0 [2024-11-28 03:37:49,433 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4fdb89-364a-4809-b098-e4c99d1589d6/bin/uautomizer-verify-aQ6SnzHsRB/data/acd5a0303/1b681deba77b402d82e40f232148b3b9 [2024-11-28 03:37:49,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:37:49,440 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:37:49,441 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:37:49,441 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:37:49,446 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:37:49,447 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:37:49" (1/1) ... [2024-11-28 03:37:49,448 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fa5d9ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:49, skipping insertion in model container [2024-11-28 03:37:49,448 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:37:49" (1/1) ... [2024-11-28 03:37:49,462 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:37:49,631 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:37:49,642 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:37:49,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:37:49,667 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:37:49,668 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:49 WrapperNode [2024-11-28 03:37:49,668 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:37:49,669 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:37:49,670 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:37:49,670 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:37:49,676 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:49" (1/1) ... [2024-11-28 03:37:49,682 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:49" (1/1) ... [2024-11-28 03:37:49,697 INFO L138 Inliner]: procedures = 12, calls = 10, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 29 [2024-11-28 03:37:49,699 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:37:49,699 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:37:49,699 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:37:49,700 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:37:49,708 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:49" (1/1) ... [2024-11-28 03:37:49,709 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:49" (1/1) ... [2024-11-28 03:37:49,710 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:49" (1/1) ... [2024-11-28 03:37:49,722 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 03:37:49,723 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:49" (1/1) ... [2024-11-28 03:37:49,724 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:49" (1/1) ... [2024-11-28 03:37:49,726 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:49" (1/1) ... [2024-11-28 03:37:49,728 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:49" (1/1) ... [2024-11-28 03:37:49,731 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:49" (1/1) ... [2024-11-28 03:37:49,735 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:49" (1/1) ... [2024-11-28 03:37:49,738 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:49" (1/1) ... [2024-11-28 03:37:49,740 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:37:49,740 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:37:49,741 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:37:49,741 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:37:49,742 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:49" (1/1) ... [2024-11-28 03:37:49,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 03:37:49,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4fdb89-364a-4809-b098-e4c99d1589d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:37:49,788 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4fdb89-364a-4809-b098-e4c99d1589d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 03:37:49,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4fdb89-364a-4809-b098-e4c99d1589d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-28 03:37:49,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:37:49,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:37:49,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:37:49,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:37:49,876 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:37:49,878 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:37:49,958 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-28 03:37:49,959 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:37:49,973 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:37:49,974 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 03:37:49,974 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:37:49 BoogieIcfgContainer [2024-11-28 03:37:49,975 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:37:49,976 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-28 03:37:49,976 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-28 03:37:49,984 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-28 03:37:49,985 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-28 03:37:49,985 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:37:49" (1/3) ... [2024-11-28 03:37:49,986 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@368341bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:37:49, skipping insertion in model container [2024-11-28 03:37:49,987 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-28 03:37:49,987 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:49" (2/3) ... [2024-11-28 03:37:49,988 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@368341bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:37:49, skipping insertion in model container [2024-11-28 03:37:49,988 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-28 03:37:49,989 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:37:49" (3/3) ... [2024-11-28 03:37:49,990 INFO L363 chiAutomizerObserver]: Analyzing ICFG while_infinite_loop_2.c [2024-11-28 03:37:50,059 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-28 03:37:50,060 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-28 03:37:50,060 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-28 03:37:50,060 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-28 03:37:50,060 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-28 03:37:50,061 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-28 03:37:50,062 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-28 03:37:50,062 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-28 03:37:50,070 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:50,088 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-28 03:37:50,088 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 03:37:50,088 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 03:37:50,094 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-28 03:37:50,094 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-28 03:37:50,095 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-28 03:37:50,095 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:50,096 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-28 03:37:50,100 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 03:37:50,100 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 03:37:50,100 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-28 03:37:50,101 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-28 03:37:50,108 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(24, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~x~0#1;main_~x~0#1 := 0;" [2024-11-28 03:37:50,109 INFO L749 eck$LassoCheckResult]: Loop: "assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 0 == main_~x~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1;" "assume !(0 == __VERIFIER_assert_~cond#1);" "havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;" [2024-11-28 03:37:50,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:50,118 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-11-28 03:37:50,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 03:37:50,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499435447] [2024-11-28 03:37:50,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:37:50,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:50,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:37:50,208 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:37:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:37:50,232 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 03:37:50,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:50,238 INFO L85 PathProgramCache]: Analyzing trace with hash 41005, now seen corresponding path program 1 times [2024-11-28 03:37:50,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 03:37:50,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115227223] [2024-11-28 03:37:50,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:37:50,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:37:50,257 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:37:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:37:50,268 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 03:37:50,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:50,273 INFO L85 PathProgramCache]: Analyzing trace with hash 28699947, now seen corresponding path program 1 times [2024-11-28 03:37:50,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 03:37:50,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718859020] [2024-11-28 03:37:50,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:37:50,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:37:50,298 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:37:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:37:50,317 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 03:37:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:37:50,644 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:37:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:37:50,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:37:50 BoogieIcfgContainer [2024-11-28 03:37:50,678 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-28 03:37:50,679 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 03:37:50,679 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 03:37:50,679 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 03:37:50,680 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:37:49" (3/4) ... [2024-11-28 03:37:50,682 INFO L143 WitnessPrinter]: Generating witness for non-termination counterexample [2024-11-28 03:37:50,713 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4fdb89-364a-4809-b098-e4c99d1589d6/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 03:37:50,714 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 03:37:50,715 INFO L158 Benchmark]: Toolchain (without parser) took 1277.74ms. Allocated memory is still 117.4MB. Free memory was 92.8MB in the beginning and 47.0MB in the end (delta: 45.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-28 03:37:50,716 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory is still 73.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:37:50,716 INFO L158 Benchmark]: CACSL2BoogieTranslator took 227.56ms. Allocated memory is still 117.4MB. Free memory was 92.7MB in the beginning and 82.4MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:37:50,716 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.38ms. Allocated memory is still 117.4MB. Free memory was 82.4MB in the beginning and 81.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:37:50,717 INFO L158 Benchmark]: Boogie Preprocessor took 40.55ms. Allocated memory is still 117.4MB. Free memory was 81.3MB in the beginning and 80.3MB in the end (delta: 965.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:37:50,717 INFO L158 Benchmark]: RCFGBuilder took 234.28ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 71.7MB in the end (delta: 8.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:37:50,717 INFO L158 Benchmark]: BuchiAutomizer took 702.56ms. Allocated memory is still 117.4MB. Free memory was 71.5MB in the beginning and 48.9MB in the end (delta: 22.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-28 03:37:50,718 INFO L158 Benchmark]: Witness Printer took 34.95ms. Allocated memory is still 117.4MB. Free memory was 48.8MB in the beginning and 47.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:37:50,720 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory is still 73.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 227.56ms. Allocated memory is still 117.4MB. Free memory was 92.7MB in the beginning and 82.4MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.38ms. Allocated memory is still 117.4MB. Free memory was 82.4MB in the beginning and 81.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.55ms. Allocated memory is still 117.4MB. Free memory was 81.3MB in the beginning and 80.3MB in the end (delta: 965.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 234.28ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 71.7MB in the end (delta: 8.4MB). There was no memory consumed. Max. memory is 16.1GB. * BuchiAutomizer took 702.56ms. Allocated memory is still 117.4MB. Free memory was 71.5MB in the beginning and 48.9MB in the end (delta: 22.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 34.95ms. Allocated memory is still 117.4MB. Free memory was 48.8MB in the beginning and 47.2MB 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 0.6s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 1]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L12] int x=0; VAL [x=0] Loop: [L16] CALL __VERIFIER_assert(x==0) [L6] COND FALSE !(!(cond)) [L16] RET __VERIFIER_assert(x==0) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L12] int x=0; VAL [x=0] Loop: [L16] CALL __VERIFIER_assert(x==0) [L6] COND FALSE !(!(cond)) [L16] RET __VERIFIER_assert(x==0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2024-11-28 03:37:50,742 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4fdb89-364a-4809-b098-e4c99d1589d6/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)