./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-lit/mine2017-ex4.8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0ea80da-2793-450c-aee5-84dcd53cd3a5/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0ea80da-2793-450c-aee5-84dcd53cd3a5/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_c0ea80da-2793-450c-aee5-84dcd53cd3a5/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0ea80da-2793-450c-aee5-84dcd53cd3a5/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-lit/mine2017-ex4.8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0ea80da-2793-450c-aee5-84dcd53cd3a5/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_c0ea80da-2793-450c-aee5-84dcd53cd3a5/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 ee63462f1ec886f4aa9c5663162640144e173530e57636655ca95f3d6ab0ae72 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:42:36,399 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:42:36,475 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0ea80da-2793-450c-aee5-84dcd53cd3a5/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-26 10:42:36,482 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:42:36,483 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:42:36,513 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:42:36,514 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:42:36,515 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:42:36,516 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:42:36,517 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:42:36,518 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:42:36,518 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:42:36,519 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:42:36,520 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-26 10:42:36,521 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-26 10:42:36,521 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-26 10:42:36,522 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-26 10:42:36,523 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-26 10:42:36,523 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-26 10:42:36,524 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:42:36,525 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-26 10:42:36,526 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:42:36,526 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:42:36,527 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:42:36,527 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:42:36,528 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-26 10:42:36,529 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-26 10:42:36,529 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-26 10:42:36,530 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:42:36,530 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:42:36,531 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:42:36,531 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-26 10:42:36,532 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:42:36,532 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:42:36,533 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:42:36,533 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:42:36,534 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:42:36,535 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-26 10:42:36,535 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_c0ea80da-2793-450c-aee5-84dcd53cd3a5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0ea80da-2793-450c-aee5-84dcd53cd3a5/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee63462f1ec886f4aa9c5663162640144e173530e57636655ca95f3d6ab0ae72 [2023-11-26 10:42:36,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:42:36,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:42:36,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:42:36,813 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:42:36,814 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:42:36,815 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0ea80da-2793-450c-aee5-84dcd53cd3a5/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/loop-lit/mine2017-ex4.8.i [2023-11-26 10:42:40,107 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:42:40,371 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:42:40,371 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0ea80da-2793-450c-aee5-84dcd53cd3a5/sv-benchmarks/c/loop-lit/mine2017-ex4.8.i [2023-11-26 10:42:40,380 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0ea80da-2793-450c-aee5-84dcd53cd3a5/bin/uautomizer-verify-VRDe98Ueme/data/78b9c1652/7133158b4e2c48a9848dd5ffe623aa1d/FLAG585f466a6 [2023-11-26 10:42:40,403 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0ea80da-2793-450c-aee5-84dcd53cd3a5/bin/uautomizer-verify-VRDe98Ueme/data/78b9c1652/7133158b4e2c48a9848dd5ffe623aa1d [2023-11-26 10:42:40,409 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:42:40,413 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:42:40,417 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:42:40,417 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:42:40,423 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:42:40,426 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:42:40" (1/1) ... [2023-11-26 10:42:40,427 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a824ead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:40, skipping insertion in model container [2023-11-26 10:42:40,427 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:42:40" (1/1) ... [2023-11-26 10:42:40,452 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:42:40,676 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:42:40,689 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:42:40,709 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:42:40,729 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:42:40,730 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:40 WrapperNode [2023-11-26 10:42:40,730 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:42:40,731 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:42:40,732 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:42:40,732 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:42:40,741 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:40" (1/1) ... [2023-11-26 10:42:40,753 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:40" (1/1) ... [2023-11-26 10:42:40,778 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 38 [2023-11-26 10:42:40,778 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:42:40,779 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:42:40,779 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:42:40,779 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:42:40,792 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:40" (1/1) ... [2023-11-26 10:42:40,793 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:40" (1/1) ... [2023-11-26 10:42:40,794 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:40" (1/1) ... [2023-11-26 10:42:40,809 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 10:42:40,810 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:40" (1/1) ... [2023-11-26 10:42:40,810 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:40" (1/1) ... [2023-11-26 10:42:40,812 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:40" (1/1) ... [2023-11-26 10:42:40,816 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:40" (1/1) ... [2023-11-26 10:42:40,817 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:40" (1/1) ... [2023-11-26 10:42:40,818 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:40" (1/1) ... [2023-11-26 10:42:40,820 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:42:40,821 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:42:40,821 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:42:40,821 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:42:40,829 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:40" (1/1) ... [2023-11-26 10:42:40,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:42:40,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0ea80da-2793-450c-aee5-84dcd53cd3a5/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:42:40,868 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0ea80da-2793-450c-aee5-84dcd53cd3a5/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:42:40,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0ea80da-2793-450c-aee5-84dcd53cd3a5/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-26 10:42:40,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:42:40,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:42:40,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:42:40,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:42:41,009 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:42:41,011 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:42:41,209 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:42:41,218 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:42:41,225 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 10:42:41,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:42:41 BoogieIcfgContainer [2023-11-26 10:42:41,227 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:42:41,229 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-26 10:42:41,229 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-26 10:42:41,233 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-26 10:42:41,235 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 10:42:41,236 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.11 10:42:40" (1/3) ... [2023-11-26 10:42:41,237 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@71c78d64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.11 10:42:41, skipping insertion in model container [2023-11-26 10:42:41,237 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 10:42:41,239 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:40" (2/3) ... [2023-11-26 10:42:41,239 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@71c78d64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.11 10:42:41, skipping insertion in model container [2023-11-26 10:42:41,240 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 10:42:41,240 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:42:41" (3/3) ... [2023-11-26 10:42:41,242 INFO L332 chiAutomizerObserver]: Analyzing ICFG mine2017-ex4.8.i [2023-11-26 10:42:41,317 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-26 10:42:41,318 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-26 10:42:41,318 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-26 10:42:41,318 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-26 10:42:41,318 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-26 10:42:41,319 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-26 10:42:41,319 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-26 10:42:41,319 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-26 10:42:41,324 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 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 10:42:41,346 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2023-11-26 10:42:41,346 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:42:41,347 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:42:41,352 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-26 10:42:41,352 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:41,352 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-26 10:42:41,353 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 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 10:42:41,355 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2023-11-26 10:42:41,355 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:42:41,355 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:42:41,356 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-26 10:42:41,356 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:41,365 INFO L748 eck$LassoCheckResult]: Stem: 14#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(22, 2); 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_~v~0#1;main_~v~0#1 := 0; 13#L20-2true [2023-11-26 10:42:41,365 INFO L750 eck$LassoCheckResult]: Loop: 13#L20-2true havoc main_#t~nondet1#1; 15#L17-1true assume !!(0 == (if main_#t~nondet1#1 % 256 % 4294967296 <= 2147483647 then main_#t~nondet1#1 % 256 % 4294967296 else main_#t~nondet1#1 % 256 % 4294967296 - 4294967296));havoc main_#t~nondet1#1;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 0 <= main_~v~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 11#L13true assume !(0 == __VERIFIER_assert_~cond#1); 5#L13-3true havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~v~0#1 <= 1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 16#L13-4true assume !(0 == __VERIFIER_assert_~cond#1); 9#L13-7true havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true; 17#L20true assume !(0 == main_~v~0#1); 13#L20-2true [2023-11-26 10:42:41,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:41,372 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-26 10:42:41,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:41,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346798210] [2023-11-26 10:42:41,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:41,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:42:41,491 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:42:41,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:42:41,517 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:42:41,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:41,520 INFO L85 PathProgramCache]: Analyzing trace with hash -266161209, now seen corresponding path program 1 times [2023-11-26 10:42:41,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:41,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315815100] [2023-11-26 10:42:41,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:41,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:42:41,545 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:42:41,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:42:41,557 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:42:41,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:41,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1280135621, now seen corresponding path program 1 times [2023-11-26 10:42:41,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:41,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919723519] [2023-11-26 10:42:41,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:41,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:41,668 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 10:42:41,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:41,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919723519] [2023-11-26 10:42:41,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919723519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:41,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:41,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:42:41,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189603709] [2023-11-26 10:42:41,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:41,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:41,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:42:41,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:42:41,874 INFO L87 Difference]: Start difference. First operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 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, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:41,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:41,903 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2023-11-26 10:42:41,905 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 32 transitions. [2023-11-26 10:42:41,907 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2023-11-26 10:42:41,911 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 16 states and 17 transitions. [2023-11-26 10:42:41,912 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2023-11-26 10:42:41,912 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2023-11-26 10:42:41,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 17 transitions. [2023-11-26 10:42:41,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:42:41,914 INFO L218 hiAutomatonCegarLoop]: Abstraction has 16 states and 17 transitions. [2023-11-26 10:42:41,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 17 transitions. [2023-11-26 10:42:41,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-11-26 10:42:41,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.0625) internal successors, (17), 15 states have internal predecessors, (17), 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 10:42:41,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2023-11-26 10:42:41,941 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 17 transitions. [2023-11-26 10:42:41,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:42:41,946 INFO L428 stractBuchiCegarLoop]: Abstraction has 16 states and 17 transitions. [2023-11-26 10:42:41,946 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-26 10:42:41,946 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 17 transitions. [2023-11-26 10:42:41,947 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2023-11-26 10:42:41,947 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:42:41,947 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:42:41,948 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:41,948 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:41,949 INFO L748 eck$LassoCheckResult]: Stem: 67#$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(22, 2); 68#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_~v~0#1;main_~v~0#1 := 0; 69#L20-2 havoc main_#t~nondet1#1; 75#L17-1 assume !!(0 == (if main_#t~nondet1#1 % 256 % 4294967296 <= 2147483647 then main_#t~nondet1#1 % 256 % 4294967296 else main_#t~nondet1#1 % 256 % 4294967296 - 4294967296));havoc main_#t~nondet1#1;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 0 <= main_~v~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 74#L13 assume !(0 == __VERIFIER_assert_~cond#1); 73#L13-3 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~v~0#1 <= 1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 72#L13-4 assume !(0 == __VERIFIER_assert_~cond#1); 71#L13-7 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true; 70#L20 assume 0 == main_~v~0#1;main_~v~0#1 := 1; 64#L20-2 [2023-11-26 10:42:41,949 INFO L750 eck$LassoCheckResult]: Loop: 64#L20-2 havoc main_#t~nondet1#1; 65#L17-1 assume !!(0 == (if main_#t~nondet1#1 % 256 % 4294967296 <= 2147483647 then main_#t~nondet1#1 % 256 % 4294967296 else main_#t~nondet1#1 % 256 % 4294967296 - 4294967296));havoc main_#t~nondet1#1;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 0 <= main_~v~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 62#L13 assume !(0 == __VERIFIER_assert_~cond#1); 63#L13-3 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~v~0#1 <= 1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 66#L13-4 assume !(0 == __VERIFIER_assert_~cond#1); 60#L13-7 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true; 61#L20 assume !(0 == main_~v~0#1); 64#L20-2 [2023-11-26 10:42:41,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:41,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1280135619, now seen corresponding path program 1 times [2023-11-26 10:42:41,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:41,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304436108] [2023-11-26 10:42:41,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:41,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:41,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:42:41,965 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:42:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:42:41,978 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:42:41,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:41,979 INFO L85 PathProgramCache]: Analyzing trace with hash -266161209, now seen corresponding path program 2 times [2023-11-26 10:42:41,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:41,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100270633] [2023-11-26 10:42:41,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:41,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:41,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:42:41,990 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:42:41,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:42:41,999 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:42:42,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:42,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1693695035, now seen corresponding path program 1 times [2023-11-26 10:42:42,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:42,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122605774] [2023-11-26 10:42:42,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:42,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:42,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:42:42,018 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:42:42,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:42:42,035 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:42:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:42:42,355 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:42:42,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:42:42,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.11 10:42:42 BoogieIcfgContainer [2023-11-26 10:42:42,412 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-26 10:42:42,413 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 10:42:42,413 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 10:42:42,414 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 10:42:42,414 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:42:41" (3/4) ... [2023-11-26 10:42:42,416 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-26 10:42:42,462 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0ea80da-2793-450c-aee5-84dcd53cd3a5/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 10:42:42,468 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 10:42:42,473 INFO L158 Benchmark]: Toolchain (without parser) took 2059.19ms. Allocated memory is still 195.0MB. Free memory was 147.9MB in the beginning and 126.7MB in the end (delta: 21.3MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. [2023-11-26 10:42:42,475 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 142.6MB. Free memory is still 84.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:42:42,475 INFO L158 Benchmark]: CACSL2BoogieTranslator took 313.64ms. Allocated memory is still 195.0MB. Free memory was 147.9MB in the beginning and 138.0MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-26 10:42:42,476 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.92ms. Allocated memory is still 195.0MB. Free memory was 137.5MB in the beginning and 136.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:42:42,477 INFO L158 Benchmark]: Boogie Preprocessor took 41.07ms. Allocated memory is still 195.0MB. Free memory was 136.4MB in the beginning and 134.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:42:42,478 INFO L158 Benchmark]: RCFGBuilder took 406.82ms. Allocated memory is still 195.0MB. Free memory was 134.8MB in the beginning and 125.4MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-26 10:42:42,479 INFO L158 Benchmark]: BuchiAutomizer took 1183.79ms. Allocated memory is still 195.0MB. Free memory was 125.4MB in the beginning and 128.8MB in the end (delta: -3.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:42:42,479 INFO L158 Benchmark]: Witness Printer took 58.73ms. Allocated memory is still 195.0MB. Free memory was 128.8MB in the beginning and 126.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:42:42,483 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 142.6MB. Free memory is still 84.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 313.64ms. Allocated memory is still 195.0MB. Free memory was 147.9MB in the beginning and 138.0MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.92ms. Allocated memory is still 195.0MB. Free memory was 137.5MB in the beginning and 136.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 41.07ms. Allocated memory is still 195.0MB. Free memory was 136.4MB in the beginning and 134.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 406.82ms. Allocated memory is still 195.0MB. Free memory was 134.8MB in the beginning and 125.4MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1183.79ms. Allocated memory is still 195.0MB. Free memory was 125.4MB in the beginning and 128.8MB in the end (delta: -3.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 58.73ms. Allocated memory is still 195.0MB. Free memory was 128.8MB in the beginning and 126.7MB 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 16 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.0s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. 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, 6 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 27 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8 IncrementalHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 15 mSDtfsCounter, 8 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: 17]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L16] int v = 0; VAL [v=0] [L17] COND TRUE __VERIFIER_nondet_bool() == 0 [L18] CALL __VERIFIER_assert(0 <= v) [L13] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L18] RET __VERIFIER_assert(0 <= v) [L19] CALL __VERIFIER_assert(v <= 1) [L13] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L19] RET __VERIFIER_assert(v <= 1) [L20] COND TRUE v == 0 [L21] v = 1 VAL [v=1] Loop: [L17] COND TRUE __VERIFIER_nondet_bool() == 0 [L18] CALL __VERIFIER_assert(0 <= v) [L13] COND FALSE !(!(cond)) [L18] RET __VERIFIER_assert(0 <= v) [L19] CALL __VERIFIER_assert(v <= 1) [L13] COND FALSE !(!(cond)) [L19] RET __VERIFIER_assert(v <= 1) [L20] COND FALSE !(v == 0) 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: [L16] int v = 0; VAL [v=0] [L17] COND TRUE __VERIFIER_nondet_bool() == 0 [L18] CALL __VERIFIER_assert(0 <= v) [L13] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L18] RET __VERIFIER_assert(0 <= v) [L19] CALL __VERIFIER_assert(v <= 1) [L13] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L19] RET __VERIFIER_assert(v <= 1) [L20] COND TRUE v == 0 [L21] v = 1 VAL [v=1] Loop: [L17] COND TRUE __VERIFIER_nondet_bool() == 0 [L18] CALL __VERIFIER_assert(0 <= v) [L13] COND FALSE !(!(cond)) [L18] RET __VERIFIER_assert(0 <= v) [L19] CALL __VERIFIER_assert(v <= 1) [L13] COND FALSE !(!(cond)) [L19] RET __VERIFIER_assert(v <= 1) [L20] COND FALSE !(v == 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-26 10:42:42,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0ea80da-2793-450c-aee5-84dcd53cd3a5/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)