./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/ldv-regression/stateful_check.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_07816e04-1908-488d-94fc-69e7cf6d71a2/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07816e04-1908-488d-94fc-69e7cf6d71a2/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_07816e04-1908-488d-94fc-69e7cf6d71a2/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07816e04-1908-488d-94fc-69e7cf6d71a2/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/ldv-regression/stateful_check.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07816e04-1908-488d-94fc-69e7cf6d71a2/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_07816e04-1908-488d-94fc-69e7cf6d71a2/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 86e7865b5c88aae342720e4dde014f366638a0b48b0e0f6e55acb2c675bcac3e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:49:38,850 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:49:38,931 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07816e04-1908-488d-94fc-69e7cf6d71a2/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-26 11:49:38,936 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:49:38,937 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:49:38,968 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:49:38,969 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:49:38,969 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:49:38,970 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:49:38,971 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:49:38,972 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:49:38,972 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:49:38,973 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:49:38,974 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-26 11:49:38,974 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-26 11:49:38,975 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-26 11:49:38,975 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-26 11:49:38,976 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-26 11:49:38,977 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-26 11:49:38,977 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:49:38,978 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-26 11:49:38,979 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:49:38,979 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:49:38,980 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:49:38,981 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:49:38,981 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-26 11:49:38,982 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-26 11:49:38,982 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-26 11:49:38,987 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:49:38,988 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:49:38,989 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:49:38,990 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-26 11:49:38,990 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:49:38,990 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:49:38,991 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:49:38,991 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:49:38,991 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:49:38,992 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-26 11:49:38,992 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_07816e04-1908-488d-94fc-69e7cf6d71a2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07816e04-1908-488d-94fc-69e7cf6d71a2/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 86e7865b5c88aae342720e4dde014f366638a0b48b0e0f6e55acb2c675bcac3e [2023-11-26 11:49:39,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:49:39,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:49:39,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:49:39,296 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:49:39,296 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:49:39,298 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07816e04-1908-488d-94fc-69e7cf6d71a2/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/ldv-regression/stateful_check.c [2023-11-26 11:49:42,573 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:49:42,767 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:49:42,768 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07816e04-1908-488d-94fc-69e7cf6d71a2/sv-benchmarks/c/ldv-regression/stateful_check.c [2023-11-26 11:49:42,776 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07816e04-1908-488d-94fc-69e7cf6d71a2/bin/uautomizer-verify-VRDe98Ueme/data/f1efe38eb/2237c63f1df647bca31cf2f20cea932f/FLAG4d691de6d [2023-11-26 11:49:42,791 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07816e04-1908-488d-94fc-69e7cf6d71a2/bin/uautomizer-verify-VRDe98Ueme/data/f1efe38eb/2237c63f1df647bca31cf2f20cea932f [2023-11-26 11:49:42,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:49:42,795 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:49:42,797 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:49:42,797 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:49:42,803 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:49:42,803 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:49:42" (1/1) ... [2023-11-26 11:49:42,805 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47ded918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:42, skipping insertion in model container [2023-11-26 11:49:42,805 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:49:42" (1/1) ... [2023-11-26 11:49:42,830 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:49:43,004 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:49:43,017 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:49:43,038 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:49:43,054 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:49:43,055 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:43 WrapperNode [2023-11-26 11:49:43,055 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:49:43,057 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:49:43,057 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:49:43,057 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:49:43,065 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:43" (1/1) ... [2023-11-26 11:49:43,071 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:43" (1/1) ... [2023-11-26 11:49:43,095 INFO L138 Inliner]: procedures = 21, calls = 21, calls flagged for inlining = 16, calls inlined = 22, statements flattened = 123 [2023-11-26 11:49:43,095 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:49:43,096 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:49:43,097 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:49:43,097 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:49:43,106 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:43" (1/1) ... [2023-11-26 11:49:43,106 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:43" (1/1) ... [2023-11-26 11:49:43,108 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:43" (1/1) ... [2023-11-26 11:49:43,119 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 11:49:43,119 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:43" (1/1) ... [2023-11-26 11:49:43,120 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:43" (1/1) ... [2023-11-26 11:49:43,124 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:43" (1/1) ... [2023-11-26 11:49:43,128 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:43" (1/1) ... [2023-11-26 11:49:43,130 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:43" (1/1) ... [2023-11-26 11:49:43,131 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:43" (1/1) ... [2023-11-26 11:49:43,133 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:49:43,135 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:49:43,135 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:49:43,135 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:49:43,136 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:43" (1/1) ... [2023-11-26 11:49:43,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:49:43,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07816e04-1908-488d-94fc-69e7cf6d71a2/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:43,173 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07816e04-1908-488d-94fc-69e7cf6d71a2/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:49:43,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07816e04-1908-488d-94fc-69e7cf6d71a2/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-26 11:49:43,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:49:43,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:49:43,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:49:43,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:49:43,277 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:49:43,279 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:49:43,499 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:49:43,514 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:49:43,514 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:49:43,515 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:49:43 BoogieIcfgContainer [2023-11-26 11:49:43,516 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:49:43,517 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-26 11:49:43,517 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-26 11:49:43,521 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-26 11:49:43,522 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 11:49:43,523 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.11 11:49:42" (1/3) ... [2023-11-26 11:49:43,524 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6cf2e4b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.11 11:49:43, skipping insertion in model container [2023-11-26 11:49:43,524 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 11:49:43,524 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:43" (2/3) ... [2023-11-26 11:49:43,525 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6cf2e4b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.11 11:49:43, skipping insertion in model container [2023-11-26 11:49:43,525 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 11:49:43,525 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:49:43" (3/3) ... [2023-11-26 11:49:43,527 INFO L332 chiAutomizerObserver]: Analyzing ICFG stateful_check.c [2023-11-26 11:49:43,584 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-26 11:49:43,584 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-26 11:49:43,584 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-26 11:49:43,585 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-26 11:49:43,585 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-26 11:49:43,585 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-26 11:49:43,585 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-26 11:49:43,585 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-26 11:49:43,590 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 55 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 54 states have internal predecessors, (72), 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 11:49:43,612 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2023-11-26 11:49:43,613 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 11:49:43,613 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 11:49:43,621 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-26 11:49:43,621 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2023-11-26 11:49:43,621 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-26 11:49:43,622 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 55 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 54 states have internal predecessors, (72), 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 11:49:43,626 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2023-11-26 11:49:43,626 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 11:49:43,627 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 11:49:43,627 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-26 11:49:43,627 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2023-11-26 11:49:43,636 INFO L748 eck$LassoCheckResult]: Stem: 27#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3);~ldv_mutex~0 := 1;~open_called~0 := 0; 33#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret5#1, main_#t~nondet7#1, main_#t~switch8#1, main_#t~ret9#1, main_#t~post10#1, main_#t~ret11#1, main_#t~post12#1, main_#t~ret13#1, main_#t~post14#1, main_#t~ret15#1, main_#t~nondet6#1, main_~ldv_s_misc_fops_file_operations~0#1;main_~ldv_s_misc_fops_file_operations~0#1 := 0;assume { :begin_inline_my_init } true;havoc my_init_#res#1;~open_called~0 := 0;my_init_#res#1 := 0; 4#my_init_returnLabel#1true main_#t~ret5#1 := my_init_#res#1;assume { :end_inline_my_init } true;havoc main_#t~ret5#1; 8#L78-3true [2023-11-26 11:49:43,636 INFO L750 eck$LassoCheckResult]: Loop: 8#L78-3true havoc main_#t~nondet6#1; 19#L78-1true assume !!(0 != main_#t~nondet6#1);havoc main_#t~nondet6#1;havoc main_#t~nondet7#1;main_#t~switch8#1 := 0 == main_#t~nondet7#1; 20#L82true assume main_#t~switch8#1; 14#L82-1true assume !(0 == main_~ldv_s_misc_fops_file_operations~0#1); 13#L80true havoc main_#t~nondet7#1;havoc main_#t~switch8#1; 8#L78-3true [2023-11-26 11:49:43,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:43,643 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2023-11-26 11:49:43,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:43,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198241704] [2023-11-26 11:49:43,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:43,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:43,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:49:43,791 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:49:43,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:49:43,874 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:49:43,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:43,878 INFO L85 PathProgramCache]: Analyzing trace with hash 37375295, now seen corresponding path program 1 times [2023-11-26 11:49:43,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:43,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888434395] [2023-11-26 11:49:43,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:43,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:49:43,899 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:49:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:49:43,916 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:49:43,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:43,939 INFO L85 PathProgramCache]: Analyzing trace with hash 90815647, now seen corresponding path program 1 times [2023-11-26 11:49:43,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:43,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104278776] [2023-11-26 11:49:43,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:43,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:44,025 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 11:49:44,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:44,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104278776] [2023-11-26 11:49:44,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104278776] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:44,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:44,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:49:44,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589621850] [2023-11-26 11:49:44,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:44,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:44,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:44,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:44,134 INFO L87 Difference]: Start difference. First operand has 55 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 54 states have internal predecessors, (72), 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 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2023-11-26 11:49:44,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:44,185 INFO L93 Difference]: Finished difference Result 62 states and 79 transitions. [2023-11-26 11:49:44,186 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 79 transitions. [2023-11-26 11:49:44,190 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2023-11-26 11:49:44,194 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 46 states and 62 transitions. [2023-11-26 11:49:44,195 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2023-11-26 11:49:44,196 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2023-11-26 11:49:44,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 62 transitions. [2023-11-26 11:49:44,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:44,198 INFO L218 hiAutomatonCegarLoop]: Abstraction has 46 states and 62 transitions. [2023-11-26 11:49:44,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states and 62 transitions. [2023-11-26 11:49:44,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2023-11-26 11:49:44,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 45 states have internal predecessors, (62), 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 11:49:44,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 62 transitions. [2023-11-26 11:49:44,228 INFO L240 hiAutomatonCegarLoop]: Abstraction has 46 states and 62 transitions. [2023-11-26 11:49:44,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:44,234 INFO L428 stractBuchiCegarLoop]: Abstraction has 46 states and 62 transitions. [2023-11-26 11:49:44,234 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-26 11:49:44,234 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 46 states and 62 transitions. [2023-11-26 11:49:44,236 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2023-11-26 11:49:44,236 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 11:49:44,236 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 11:49:44,236 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-26 11:49:44,237 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2023-11-26 11:49:44,237 INFO L748 eck$LassoCheckResult]: Stem: 167#$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(17, 2);call #Ultimate.allocInit(12, 3);~ldv_mutex~0 := 1;~open_called~0 := 0; 144#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret5#1, main_#t~nondet7#1, main_#t~switch8#1, main_#t~ret9#1, main_#t~post10#1, main_#t~ret11#1, main_#t~post12#1, main_#t~ret13#1, main_#t~post14#1, main_#t~ret15#1, main_#t~nondet6#1, main_~ldv_s_misc_fops_file_operations~0#1;main_~ldv_s_misc_fops_file_operations~0#1 := 0;assume { :begin_inline_my_init } true;havoc my_init_#res#1;~open_called~0 := 0;my_init_#res#1 := 0; 132#my_init_returnLabel#1 main_#t~ret5#1 := my_init_#res#1;assume { :end_inline_my_init } true;havoc main_#t~ret5#1; 133#L78-3 [2023-11-26 11:49:44,237 INFO L750 eck$LassoCheckResult]: Loop: 133#L78-3 havoc main_#t~nondet6#1; 141#L78-1 assume !!(0 != main_#t~nondet6#1);havoc main_#t~nondet6#1;havoc main_#t~nondet7#1;main_#t~switch8#1 := 0 == main_#t~nondet7#1; 172#L82 assume !main_#t~switch8#1;main_#t~switch8#1 := main_#t~switch8#1 || 1 == main_#t~nondet7#1; 169#L90 assume main_#t~switch8#1; 164#L90-1 assume !(1 == main_~ldv_s_misc_fops_file_operations~0#1); 147#L80 havoc main_#t~nondet7#1;havoc main_#t~switch8#1; 133#L78-3 [2023-11-26 11:49:44,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:44,238 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 2 times [2023-11-26 11:49:44,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:44,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476798837] [2023-11-26 11:49:44,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:44,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:49:44,247 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:49:44,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:49:44,256 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:49:44,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:44,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1159083728, now seen corresponding path program 1 times [2023-11-26 11:49:44,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:44,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160436567] [2023-11-26 11:49:44,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:44,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:49:44,263 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:49:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:49:44,269 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:49:44,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:44,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1479232656, now seen corresponding path program 1 times [2023-11-26 11:49:44,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:44,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029637460] [2023-11-26 11:49:44,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:44,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:44,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:49:44,282 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:49:44,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:49:44,293 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:49:44,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:49:44,523 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:49:44,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:49:44,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.11 11:49:44 BoogieIcfgContainer [2023-11-26 11:49:44,563 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-26 11:49:44,563 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:49:44,564 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:49:44,564 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:49:44,565 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:49:43" (3/4) ... [2023-11-26 11:49:44,567 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-26 11:49:44,602 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07816e04-1908-488d-94fc-69e7cf6d71a2/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 11:49:44,602 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:49:44,603 INFO L158 Benchmark]: Toolchain (without parser) took 1807.60ms. Allocated memory is still 157.3MB. Free memory was 112.4MB in the beginning and 92.4MB in the end (delta: 20.0MB). Peak memory consumption was 23.2MB. Max. memory is 16.1GB. [2023-11-26 11:49:44,603 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 109.1MB. Free memory is still 61.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:49:44,604 INFO L158 Benchmark]: CACSL2BoogieTranslator took 258.86ms. Allocated memory is still 157.3MB. Free memory was 112.4MB in the beginning and 101.5MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-26 11:49:44,605 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.15ms. Allocated memory is still 157.3MB. Free memory was 101.5MB in the beginning and 99.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:49:44,605 INFO L158 Benchmark]: Boogie Preprocessor took 37.40ms. Allocated memory is still 157.3MB. Free memory was 99.8MB in the beginning and 97.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:49:44,606 INFO L158 Benchmark]: RCFGBuilder took 380.91ms. Allocated memory is still 157.3MB. Free memory was 97.7MB in the beginning and 86.0MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-26 11:49:44,606 INFO L158 Benchmark]: BuchiAutomizer took 1046.06ms. Allocated memory is still 157.3MB. Free memory was 85.6MB in the beginning and 94.5MB in the end (delta: -8.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:49:44,607 INFO L158 Benchmark]: Witness Printer took 38.75ms. Allocated memory is still 157.3MB. Free memory was 94.5MB in the beginning and 92.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:49:44,619 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 109.1MB. Free memory is still 61.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 258.86ms. Allocated memory is still 157.3MB. Free memory was 112.4MB in the beginning and 101.5MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.15ms. Allocated memory is still 157.3MB. Free memory was 101.5MB in the beginning and 99.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.40ms. Allocated memory is still 157.3MB. Free memory was 99.8MB in the beginning and 97.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 380.91ms. Allocated memory is still 157.3MB. Free memory was 97.7MB in the beginning and 86.0MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * BuchiAutomizer took 1046.06ms. Allocated memory is still 157.3MB. Free memory was 85.6MB in the beginning and 94.5MB in the end (delta: -8.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 38.75ms. Allocated memory is still 157.3MB. Free memory was 94.5MB in the beginning and 92.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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 3 locations. The remainder module has 46 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.9s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. 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, 21 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 90 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16 IncrementalHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 51 mSDtfsCounter, 16 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 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: 78]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L11] int ldv_mutex = 1; [L13] int open_called = 0; VAL [ldv_mutex=1, open_called=0] [L76] int ldv_s_misc_fops_file_operations = 0; [L77] CALL my_init() [L71] open_called = 0 [L72] return 0; VAL [\result=0, ldv_mutex=1, open_called=0] [L77] RET my_init() Loop: [L78] COND TRUE __VERIFIER_nondet_int() [L82] case 0: [L90] case 1: End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 78]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L11] int ldv_mutex = 1; [L13] int open_called = 0; VAL [ldv_mutex=1, open_called=0] [L76] int ldv_s_misc_fops_file_operations = 0; [L77] CALL my_init() [L71] open_called = 0 [L72] return 0; VAL [\result=0, ldv_mutex=1, open_called=0] [L77] RET my_init() Loop: [L78] COND TRUE __VERIFIER_nondet_int() [L82] case 0: [L90] case 1: End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-26 11:49:44,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07816e04-1908-488d-94fc-69e7cf6d71a2/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)