./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loops/while_infinite_loop_3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff74d08-6710-4fbc-8d88-d4cae5401712/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff74d08-6710-4fbc-8d88-d4cae5401712/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff74d08-6710-4fbc-8d88-d4cae5401712/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff74d08-6710-4fbc-8d88-d4cae5401712/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loops/while_infinite_loop_3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff74d08-6710-4fbc-8d88-d4cae5401712/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff74d08-6710-4fbc-8d88-d4cae5401712/bin/uautomizer-verify-VRDe98Ueme --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 92296dc205042e203e49a0f508dfdcdcae7c81ca61407e6509b5b78fafc04385 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:43:00,089 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:43:00,226 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff74d08-6710-4fbc-8d88-d4cae5401712/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-26 10:43:00,235 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:43:00,236 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:43:00,283 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:43:00,284 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:43:00,285 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:43:00,286 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:43:00,292 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:43:00,294 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:43:00,294 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:43:00,295 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:43:00,298 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-26 10:43:00,298 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-26 10:43:00,299 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-26 10:43:00,299 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-26 10:43:00,301 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-26 10:43:00,302 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-26 10:43:00,303 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:43:00,303 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-26 10:43:00,304 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:43:00,305 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:43:00,305 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:43:00,306 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:43:00,306 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-26 10:43:00,307 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-26 10:43:00,307 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-26 10:43:00,308 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:43:00,308 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:43:00,310 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:43:00,310 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-26 10:43:00,311 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:43:00,311 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:43:00,312 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:43:00,312 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:43:00,313 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:43:00,313 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-26 10:43:00,314 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff74d08-6710-4fbc-8d88-d4cae5401712/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff74d08-6710-4fbc-8d88-d4cae5401712/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92296dc205042e203e49a0f508dfdcdcae7c81ca61407e6509b5b78fafc04385 [2023-11-26 10:43:00,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:43:00,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:43:00,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:43:00,731 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:43:00,732 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:43:00,734 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff74d08-6710-4fbc-8d88-d4cae5401712/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/loops/while_infinite_loop_3.c [2023-11-26 10:43:04,181 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:43:04,416 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:43:04,416 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff74d08-6710-4fbc-8d88-d4cae5401712/sv-benchmarks/c/loops/while_infinite_loop_3.c [2023-11-26 10:43:04,424 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff74d08-6710-4fbc-8d88-d4cae5401712/bin/uautomizer-verify-VRDe98Ueme/data/d6fad2bb0/81d7846066404efa9f66910d64635c54/FLAG586112a04 [2023-11-26 10:43:04,453 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff74d08-6710-4fbc-8d88-d4cae5401712/bin/uautomizer-verify-VRDe98Ueme/data/d6fad2bb0/81d7846066404efa9f66910d64635c54 [2023-11-26 10:43:04,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:43:04,463 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:43:04,467 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:43:04,467 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:43:04,473 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:43:04,474 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:43:04" (1/1) ... [2023-11-26 10:43:04,475 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bccb82a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:04, skipping insertion in model container [2023-11-26 10:43:04,476 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:43:04" (1/1) ... [2023-11-26 10:43:04,501 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:43:04,672 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:43:04,686 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:43:04,700 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:43:04,715 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:43:04,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:04 WrapperNode [2023-11-26 10:43:04,716 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:43:04,717 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:43:04,717 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:43:04,717 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:43:04,725 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:04" (1/1) ... [2023-11-26 10:43:04,731 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:04" (1/1) ... [2023-11-26 10:43:04,750 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 40 [2023-11-26 10:43:04,751 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:43:04,751 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:43:04,752 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:43:04,752 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:43:04,763 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:04" (1/1) ... [2023-11-26 10:43:04,764 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:04" (1/1) ... [2023-11-26 10:43:04,765 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:04" (1/1) ... [2023-11-26 10:43:04,776 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]. [2023-11-26 10:43:04,776 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:04" (1/1) ... [2023-11-26 10:43:04,777 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:04" (1/1) ... [2023-11-26 10:43:04,779 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:04" (1/1) ... [2023-11-26 10:43:04,783 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:04" (1/1) ... [2023-11-26 10:43:04,784 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:04" (1/1) ... [2023-11-26 10:43:04,785 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:04" (1/1) ... [2023-11-26 10:43:04,786 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:43:04,788 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:43:04,788 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:43:04,788 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:43:04,789 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:04" (1/1) ... [2023-11-26 10:43:04,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:04,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff74d08-6710-4fbc-8d88-d4cae5401712/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:04,829 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff74d08-6710-4fbc-8d88-d4cae5401712/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:04,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff74d08-6710-4fbc-8d88-d4cae5401712/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-26 10:43:04,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:43:04,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:43:04,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:43:04,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:43:04,936 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:43:04,938 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:43:05,041 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:43:05,050 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:43:05,051 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-26 10:43:05,053 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:05 BoogieIcfgContainer [2023-11-26 10:43:05,053 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:43:05,054 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-26 10:43:05,054 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-26 10:43:05,058 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-26 10:43:05,059 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 10:43:05,059 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.11 10:43:04" (1/3) ... [2023-11-26 10:43:05,060 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2b98a3fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.11 10:43:05, skipping insertion in model container [2023-11-26 10:43:05,060 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 10:43:05,060 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:04" (2/3) ... [2023-11-26 10:43:05,061 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2b98a3fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.11 10:43:05, skipping insertion in model container [2023-11-26 10:43:05,061 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 10:43:05,061 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:05" (3/3) ... [2023-11-26 10:43:05,062 INFO L332 chiAutomizerObserver]: Analyzing ICFG while_infinite_loop_3.c [2023-11-26 10:43:05,153 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-26 10:43:05,153 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-26 10:43:05,154 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-26 10:43:05,154 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-26 10:43:05,154 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-26 10:43:05,154 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-26 10:43:05,154 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-26 10:43:05,155 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-26 10:43:05,159 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 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) [2023-11-26 10:43:05,175 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2023-11-26 10:43:05,175 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:43:05,176 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:43:05,181 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-26 10:43:05,181 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2023-11-26 10:43:05,181 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-26 10:43:05,182 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 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) [2023-11-26 10:43:05,184 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2023-11-26 10:43:05,184 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:43:05,184 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:43:05,184 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-26 10:43:05,184 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2023-11-26 10:43:05,191 INFO L748 eck$LassoCheckResult]: Stem: 13#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(24, 2);call #Ultimate.allocInit(12, 3);~x~0 := 0; 4#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1; 12#L26-2true [2023-11-26 10:43:05,192 INFO L750 eck$LassoCheckResult]: Loop: 12#L26-2true assume !false;assume { :begin_inline_eval } true; 16#$Ultimate##11true assume false; 14#L16-2true assume { :end_inline_eval } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 0 == ~x~0 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 10#L6true assume !(0 == __VERIFIER_assert_~cond#1); 3#L6-2true havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true; 12#L26-2true [2023-11-26 10:43:05,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:05,198 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-26 10:43:05,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:05,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556902312] [2023-11-26 10:43:05,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:05,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:05,340 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:43:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:05,389 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:43:05,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:05,393 INFO L85 PathProgramCache]: Analyzing trace with hash 39349236, now seen corresponding path program 1 times [2023-11-26 10:43:05,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:05,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021266275] [2023-11-26 10:43:05,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:05,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:05,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:05,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:05,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021266275] [2023-11-26 10:43:05,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021266275] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:05,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:05,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:43:05,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573222500] [2023-11-26 10:43:05,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:05,461 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-26 10:43:05,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:05,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:43:05,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:43:05,509 INFO L87 Difference]: Start difference. First operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 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) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-26 10:43:05,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:05,518 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2023-11-26 10:43:05,519 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 8 transitions. [2023-11-26 10:43:05,521 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-26 10:43:05,526 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 7 states and 7 transitions. [2023-11-26 10:43:05,527 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2023-11-26 10:43:05,528 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2023-11-26 10:43:05,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 7 transitions. [2023-11-26 10:43:05,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:05,529 INFO L218 hiAutomatonCegarLoop]: Abstraction has 7 states and 7 transitions. [2023-11-26 10:43:05,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 7 transitions. [2023-11-26 10:43:05,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2023-11-26 10:43:05,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.0) internal successors, (7), 6 states have internal predecessors, (7), 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) [2023-11-26 10:43:05,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2023-11-26 10:43:05,565 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 7 transitions. [2023-11-26 10:43:05,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:43:05,573 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 7 transitions. [2023-11-26 10:43:05,574 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-26 10:43:05,574 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 7 transitions. [2023-11-26 10:43:05,575 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-26 10:43:05,576 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:43:05,576 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:43:05,576 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-26 10:43:05,577 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2023-11-26 10:43:05,577 INFO L748 eck$LassoCheckResult]: Stem: 37#$Ultimate##0 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);~x~0 := 0; 38#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1; 34#L26-2 [2023-11-26 10:43:05,577 INFO L750 eck$LassoCheckResult]: Loop: 34#L26-2 assume !false;assume { :begin_inline_eval } true; 36#$Ultimate##11 assume !false;~x~0 := 0; 39#L16-2 assume { :end_inline_eval } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 0 == ~x~0 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 35#L6 assume !(0 == __VERIFIER_assert_~cond#1); 33#L6-2 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true; 34#L26-2 [2023-11-26 10:43:05,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:05,578 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2023-11-26 10:43:05,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:05,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877847207] [2023-11-26 10:43:05,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:05,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:05,599 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:43:05,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:05,618 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:43:05,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:05,619 INFO L85 PathProgramCache]: Analyzing trace with hash 39408818, now seen corresponding path program 1 times [2023-11-26 10:43:05,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:05,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369456710] [2023-11-26 10:43:05,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:05,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:05,637 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:43:05,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:05,642 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:43:05,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:05,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1810848304, now seen corresponding path program 1 times [2023-11-26 10:43:05,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:05,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178564515] [2023-11-26 10:43:05,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:05,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:05,657 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:43:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:05,667 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:43:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:05,908 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:43:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:05,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.11 10:43:05 BoogieIcfgContainer [2023-11-26 10:43:05,944 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-26 10:43:05,944 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 10:43:05,944 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 10:43:05,945 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 10:43:05,945 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:05" (3/4) ... [2023-11-26 10:43:05,947 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-26 10:43:05,986 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff74d08-6710-4fbc-8d88-d4cae5401712/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 10:43:05,987 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 10:43:05,988 INFO L158 Benchmark]: Toolchain (without parser) took 1524.44ms. Allocated memory was 144.7MB in the beginning and 201.3MB in the end (delta: 56.6MB). Free memory was 98.0MB in the beginning and 141.4MB in the end (delta: -43.4MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. [2023-11-26 10:43:05,988 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 144.7MB. Free memory is still 87.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:43:05,989 INFO L158 Benchmark]: CACSL2BoogieTranslator took 249.10ms. Allocated memory is still 144.7MB. Free memory was 97.7MB in the beginning and 87.9MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-26 10:43:05,990 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.07ms. Allocated memory is still 144.7MB. Free memory was 87.9MB in the beginning and 86.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:43:05,990 INFO L158 Benchmark]: Boogie Preprocessor took 35.15ms. Allocated memory is still 144.7MB. Free memory was 86.3MB in the beginning and 84.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:43:05,991 INFO L158 Benchmark]: RCFGBuilder took 265.42ms. Allocated memory is still 144.7MB. Free memory was 84.6MB in the beginning and 76.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-26 10:43:05,992 INFO L158 Benchmark]: BuchiAutomizer took 889.59ms. Allocated memory was 144.7MB in the beginning and 201.3MB in the end (delta: 56.6MB). Free memory was 75.9MB in the beginning and 142.7MB in the end (delta: -66.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:43:05,992 INFO L158 Benchmark]: Witness Printer took 42.34ms. Allocated memory is still 201.3MB. Free memory was 142.7MB in the beginning and 141.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:43:05,996 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 144.7MB. Free memory is still 87.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 249.10ms. Allocated memory is still 144.7MB. Free memory was 97.7MB in the beginning and 87.9MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.07ms. Allocated memory is still 144.7MB. Free memory was 87.9MB in the beginning and 86.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.15ms. Allocated memory is still 144.7MB. Free memory was 86.3MB in the beginning and 84.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 265.42ms. Allocated memory is still 144.7MB. Free memory was 84.6MB in the beginning and 76.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 889.59ms. Allocated memory was 144.7MB in the beginning and 201.3MB in the end (delta: 56.6MB). Free memory was 75.9MB in the beginning and 142.7MB in the end (delta: -66.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 42.34ms. Allocated memory is still 201.3MB. Free memory was 142.7MB in the beginning and 141.4MB in the end (delta: 1.2MB). 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 Your program was decomposed into 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.1 modules have a trivial ranking function, the largest among these consists of 2 locations. The remainder module has 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.8s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. 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: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 8 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI1 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: 26]: 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: [L26] COND TRUE 1 [L28] CALL eval() [L16] COND TRUE 1 [L17] x=0 [L28] RET eval() [L29] CALL __VERIFIER_assert(x==0) [L6] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(x==0) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 26]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L12] int x=0; VAL [x=0] Loop: [L26] COND TRUE 1 [L28] CALL eval() [L16] COND TRUE 1 [L17] x=0 [L28] RET eval() [L29] CALL __VERIFIER_assert(x==0) [L6] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(x==0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-26 10:43:06,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff74d08-6710-4fbc-8d88-d4cae5401712/bin/uautomizer-verify-VRDe98Ueme/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)