./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-bwb/not-02-false.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_7eb64e45-ada3-4a37-a440-591118ee2081/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb64e45-ada3-4a37-a440-591118ee2081/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_7eb64e45-ada3-4a37-a440-591118ee2081/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb64e45-ada3-4a37-a440-591118ee2081/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-bwb/not-02-false.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb64e45-ada3-4a37-a440-591118ee2081/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_7eb64e45-ada3-4a37-a440-591118ee2081/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 1cb1212705dcb2359e149f714cdee98eb86abe4233b8489d951797aa1809a1f3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:07:51,702 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:07:51,805 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb64e45-ada3-4a37-a440-591118ee2081/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-27 20:07:51,812 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:07:51,812 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:07:51,844 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:07:51,849 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:07:51,849 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:07:51,850 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:07:51,850 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:07:51,851 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:07:51,851 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:07:51,851 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:07:51,852 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-27 20:07:51,852 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-27 20:07:51,853 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-27 20:07:51,855 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-27 20:07:51,855 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-27 20:07:51,855 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-27 20:07:51,855 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:07:51,856 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-27 20:07:51,856 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:07:51,856 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:07:51,856 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-27 20:07:51,856 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-27 20:07:51,856 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-27 20:07:51,856 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 20:07:51,857 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:07:51,857 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-27 20:07:51,857 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:07:51,857 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:07:51,857 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:07:51,857 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:07:51,857 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:07:51,857 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL_NO_AM [2024-11-27 20:07:51,858 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-27 20:07:51,858 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_7eb64e45-ada3-4a37-a440-591118ee2081/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 -> 1cb1212705dcb2359e149f714cdee98eb86abe4233b8489d951797aa1809a1f3 [2024-11-27 20:07:52,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:07:52,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:07:52,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:07:52,242 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:07:52,242 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:07:52,244 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb64e45-ada3-4a37-a440-591118ee2081/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/termination-bwb/not-02-false.c [2024-11-27 20:07:55,899 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb64e45-ada3-4a37-a440-591118ee2081/bin/uautomizer-verify-aQ6SnzHsRB/data/feec0db00/27b8ad469c894f55aac76ec47702943d/FLAGc94463a92 [2024-11-27 20:07:56,266 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:07:56,267 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb64e45-ada3-4a37-a440-591118ee2081/sv-benchmarks/c/termination-bwb/not-02-false.c [2024-11-27 20:07:56,276 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb64e45-ada3-4a37-a440-591118ee2081/bin/uautomizer-verify-aQ6SnzHsRB/data/feec0db00/27b8ad469c894f55aac76ec47702943d/FLAGc94463a92 [2024-11-27 20:07:56,297 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb64e45-ada3-4a37-a440-591118ee2081/bin/uautomizer-verify-aQ6SnzHsRB/data/feec0db00/27b8ad469c894f55aac76ec47702943d [2024-11-27 20:07:56,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:07:56,302 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:07:56,306 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:07:56,307 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:07:56,313 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:07:56,314 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:07:56" (1/1) ... [2024-11-27 20:07:56,316 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c4d8bb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:07:56, skipping insertion in model container [2024-11-27 20:07:56,316 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:07:56" (1/1) ... [2024-11-27 20:07:56,342 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:07:56,541 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:07:56,550 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:07:56,565 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:07:56,581 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:07:56,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:07:56 WrapperNode [2024-11-27 20:07:56,584 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:07:56,585 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:07:56,586 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:07:56,586 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:07:56,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:07:56" (1/1) ... [2024-11-27 20:07:56,603 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:07:56" (1/1) ... [2024-11-27 20:07:56,620 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 17 [2024-11-27 20:07:56,621 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:07:56,623 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:07:56,623 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:07:56,623 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:07:56,634 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:07:56" (1/1) ... [2024-11-27 20:07:56,634 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:07:56" (1/1) ... [2024-11-27 20:07:56,635 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:07:56" (1/1) ... [2024-11-27 20:07:56,642 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-27 20:07:56,642 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:07:56" (1/1) ... [2024-11-27 20:07:56,643 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:07:56" (1/1) ... [2024-11-27 20:07:56,645 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:07:56" (1/1) ... [2024-11-27 20:07:56,646 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:07:56" (1/1) ... [2024-11-27 20:07:56,652 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:07:56" (1/1) ... [2024-11-27 20:07:56,653 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:07:56" (1/1) ... [2024-11-27 20:07:56,653 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:07:56" (1/1) ... [2024-11-27 20:07:56,654 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:07:56,655 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:07:56,656 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:07:56,656 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:07:56,657 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:07:56" (1/1) ... [2024-11-27 20:07:56,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 20:07:56,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb64e45-ada3-4a37-a440-591118ee2081/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:07:56,701 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb64e45-ada3-4a37-a440-591118ee2081/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-27 20:07:56,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb64e45-ada3-4a37-a440-591118ee2081/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-27 20:07:56,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:07:56,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:07:56,804 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:07:56,809 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:07:56,901 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-11-27 20:07:56,901 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:07:56,920 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:07:56,920 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-27 20:07:56,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:07:56 BoogieIcfgContainer [2024-11-27 20:07:56,921 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:07:56,923 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-27 20:07:56,923 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-27 20:07:56,931 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-27 20:07:56,932 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-27 20:07:56,932 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.11 08:07:56" (1/3) ... [2024-11-27 20:07:56,936 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1d70f9b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.11 08:07:56, skipping insertion in model container [2024-11-27 20:07:56,936 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-27 20:07:56,937 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:07:56" (2/3) ... [2024-11-27 20:07:56,937 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1d70f9b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.11 08:07:56, skipping insertion in model container [2024-11-27 20:07:56,937 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-27 20:07:56,937 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:07:56" (3/3) ... [2024-11-27 20:07:56,938 INFO L363 chiAutomizerObserver]: Analyzing ICFG not-02-false.c [2024-11-27 20:07:57,021 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-27 20:07:57,022 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-27 20:07:57,022 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-27 20:07:57,023 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-27 20:07:57,023 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-27 20:07:57,023 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-27 20:07:57,023 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-27 20:07:57,024 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-27 20:07:57,030 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:07:57,049 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-27 20:07:57,050 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-27 20:07:57,050 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-27 20:07:57,056 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-27 20:07:57,056 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-27 20:07:57,056 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-27 20:07:57,056 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:07:57,057 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-27 20:07:57,057 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-27 20:07:57,057 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-27 20:07:57,058 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-27 20:07:57,058 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-27 20:07:57,068 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~a~0#1, main_~x~0#1, main_~y~0#1;havoc main_~a~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~a~0#1 := 1;" [2024-11-27 20:07:57,069 INFO L749 eck$LassoCheckResult]: Loop: "assume main_~x~0#1 < 0;" "main_~y~0#1 := -1 - main_~a~0#1;main_~x~0#1 := main_~y~0#1;" [2024-11-27 20:07:57,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:07:57,075 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-11-27 20:07:57,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 20:07:57,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064687401] [2024-11-27 20:07:57,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:07:57,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:07:57,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:07:57,187 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 20:07:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:07:57,212 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 20:07:57,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:07:57,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1221, now seen corresponding path program 1 times [2024-11-27 20:07:57,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 20:07:57,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159634393] [2024-11-27 20:07:57,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:07:57,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:07:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:07:57,239 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 20:07:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:07:57,254 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 20:07:57,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:07:57,256 INFO L85 PathProgramCache]: Analyzing trace with hash 925703, now seen corresponding path program 1 times [2024-11-27 20:07:57,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 20:07:57,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436558142] [2024-11-27 20:07:57,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:07:57,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:07:57,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:07:57,275 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 20:07:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:07:57,282 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 20:07:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:07:57,467 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 20:07:57,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:07:57,507 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.11 08:07:57 BoogieIcfgContainer [2024-11-27 20:07:57,508 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-27 20:07:57,509 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 20:07:57,510 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 20:07:57,510 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 20:07:57,511 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:07:56" (3/4) ... [2024-11-27 20:07:57,515 INFO L143 WitnessPrinter]: Generating witness for non-termination counterexample [2024-11-27 20:07:57,565 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb64e45-ada3-4a37-a440-591118ee2081/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-27 20:07:57,567 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 20:07:57,570 INFO L158 Benchmark]: Toolchain (without parser) took 1266.69ms. Allocated memory is still 117.4MB. Free memory was 93.1MB in the beginning and 56.9MB in the end (delta: 36.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-27 20:07:57,571 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 117.4MB. Free memory was 74.6MB in the beginning and 74.5MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:07:57,571 INFO L158 Benchmark]: CACSL2BoogieTranslator took 278.07ms. Allocated memory is still 117.4MB. Free memory was 93.1MB in the beginning and 83.0MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 20:07:57,573 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.64ms. Allocated memory is still 117.4MB. Free memory was 83.0MB in the beginning and 82.2MB in the end (delta: 775.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:07:57,573 INFO L158 Benchmark]: Boogie Preprocessor took 31.86ms. Allocated memory is still 117.4MB. Free memory was 82.2MB in the beginning and 81.2MB in the end (delta: 976.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:07:57,574 INFO L158 Benchmark]: RCFGBuilder took 265.40ms. 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. [2024-11-27 20:07:57,575 INFO L158 Benchmark]: BuchiAutomizer took 585.84ms. Allocated memory is still 117.4MB. Free memory was 73.2MB in the beginning and 58.6MB in the end (delta: 14.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 20:07:57,576 INFO L158 Benchmark]: Witness Printer took 57.92ms. Allocated memory is still 117.4MB. Free memory was 58.6MB in the beginning and 56.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:07:57,579 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49ms. Allocated memory is still 117.4MB. Free memory was 74.6MB in the beginning and 74.5MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 278.07ms. Allocated memory is still 117.4MB. Free memory was 93.1MB 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 36.64ms. Allocated memory is still 117.4MB. Free memory was 83.0MB in the beginning and 82.2MB in the end (delta: 775.6kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.86ms. Allocated memory is still 117.4MB. Free memory was 82.2MB in the beginning and 81.2MB in the end (delta: 976.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 265.40ms. 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 585.84ms. Allocated memory is still 117.4MB. Free memory was 73.2MB in the beginning and 58.6MB in the end (delta: 14.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 57.92ms. Allocated memory is still 117.4MB. Free memory was 58.6MB in the beginning and 56.9MB 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 0.4s. 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: 17]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L13] int a, x, y; [L14] x = __VERIFIER_nondet_int() [L15] y = __VERIFIER_nondet_int() [L16] a = 1 VAL [a=1] Loop: [L17] COND TRUE x<0 [L18] y = ~a [L19] x = y End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 17]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L13] int a, x, y; [L14] x = __VERIFIER_nondet_int() [L15] y = __VERIFIER_nondet_int() [L16] a = 1 VAL [a=1] Loop: [L17] COND TRUE x<0 [L18] y = ~a [L19] x = y End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2024-11-27 20:07:57,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb64e45-ada3-4a37-a440-591118ee2081/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)