./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-invgen/half_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9bd2c7ff 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_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/half_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu --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 0b362a98d328467ff4a069dbed2be3429090ca070e60d49c76297e4bb94402b7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:40:24,290 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:40:24,412 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-19 07:40:24,421 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:40:24,422 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:40:24,461 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:40:24,463 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:40:24,463 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:40:24,465 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:40:24,470 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:40:24,471 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:40:24,472 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-19 07:40:24,472 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-19 07:40:24,474 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-19 07:40:24,475 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-19 07:40:24,475 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-19 07:40:24,476 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-19 07:40:24,476 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:40:24,477 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-19 07:40:24,478 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:40:24,478 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:40:24,479 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:40:24,479 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:40:24,480 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-19 07:40:24,480 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-19 07:40:24,481 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-19 07:40:24,481 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:40:24,481 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:40:24,482 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:40:24,482 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-19 07:40:24,484 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:40:24,484 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:40:24,484 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:40:24,485 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:40:24,485 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:40:24,485 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-19 07:40:24,486 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_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b362a98d328467ff4a069dbed2be3429090ca070e60d49c76297e4bb94402b7 [2023-11-19 07:40:24,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:40:24,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:40:24,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:40:24,866 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:40:24,867 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:40:24,868 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/loop-invgen/half_2.i [2023-11-19 07:40:28,009 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:40:28,302 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:40:28,303 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/sv-benchmarks/c/loop-invgen/half_2.i [2023-11-19 07:40:28,312 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/data/e14872ef3/9d013d0ed8be4dfb94ecb02c513909ed/FLAGe93a604d8 [2023-11-19 07:40:28,332 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/data/e14872ef3/9d013d0ed8be4dfb94ecb02c513909ed [2023-11-19 07:40:28,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:40:28,341 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:40:28,344 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:40:28,346 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:40:28,352 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:40:28,353 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:40:28" (1/1) ... [2023-11-19 07:40:28,354 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32466afb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:28, skipping insertion in model container [2023-11-19 07:40:28,354 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:40:28" (1/1) ... [2023-11-19 07:40:28,414 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:40:28,641 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:40:28,657 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:40:28,682 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:40:28,700 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:40:28,701 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:28 WrapperNode [2023-11-19 07:40:28,701 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:40:28,703 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:40:28,703 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:40:28,703 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:40:28,711 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:28" (1/1) ... [2023-11-19 07:40:28,721 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:28" (1/1) ... [2023-11-19 07:40:28,744 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 50 [2023-11-19 07:40:28,744 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:40:28,745 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:40:28,745 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:40:28,745 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:40:28,755 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:28" (1/1) ... [2023-11-19 07:40:28,755 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:28" (1/1) ... [2023-11-19 07:40:28,770 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:28" (1/1) ... [2023-11-19 07:40:28,770 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:28" (1/1) ... [2023-11-19 07:40:28,774 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:28" (1/1) ... [2023-11-19 07:40:28,780 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:28" (1/1) ... [2023-11-19 07:40:28,782 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:28" (1/1) ... [2023-11-19 07:40:28,787 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:28" (1/1) ... [2023-11-19 07:40:28,789 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:40:28,794 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:40:28,795 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:40:28,795 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:40:28,796 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:28" (1/1) ... [2023-11-19 07:40:28,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:40:28,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:28,833 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:40:28,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-19 07:40:28,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:40:28,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:40:28,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:40:28,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:40:28,956 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:40:28,959 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:40:29,139 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:40:29,146 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:40:29,147 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:40:29,150 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:29 BoogieIcfgContainer [2023-11-19 07:40:29,151 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:40:29,152 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-19 07:40:29,152 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-19 07:40:29,156 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-19 07:40:29,157 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:40:29,158 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 07:40:28" (1/3) ... [2023-11-19 07:40:29,159 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2acb2990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 07:40:29, skipping insertion in model container [2023-11-19 07:40:29,159 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:40:29,160 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:28" (2/3) ... [2023-11-19 07:40:29,160 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2acb2990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 07:40:29, skipping insertion in model container [2023-11-19 07:40:29,160 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:40:29,161 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:29" (3/3) ... [2023-11-19 07:40:29,162 INFO L332 chiAutomizerObserver]: Analyzing ICFG half_2.i [2023-11-19 07:40:29,221 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-19 07:40:29,221 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-19 07:40:29,221 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-19 07:40:29,221 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-19 07:40:29,221 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-19 07:40:29,221 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-19 07:40:29,222 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-19 07:40:29,222 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-19 07:40:29,227 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 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) [2023-11-19 07:40:29,247 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2023-11-19 07:40:29,247 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:40:29,247 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:40:29,253 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-19 07:40:29,254 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-11-19 07:40:29,254 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-19 07:40:29,254 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 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) [2023-11-19 07:40:29,256 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2023-11-19 07:40:29,256 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:40:29,256 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:40:29,257 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-19 07:40:29,257 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-11-19 07:40:29,266 INFO L748 eck$LassoCheckResult]: Stem: 11#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~post2#1, main_#t~post3#1, main_#t~post4#1, main_~n~0#1, main_~i~0#1, main_~k~0#1, main_~j~0#1;havoc main_~n~0#1;havoc main_~i~0#1;havoc main_~k~0#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 5#L27true assume !!(main_~n~0#1 <= 1000000);main_~k~0#1 := main_~n~0#1;main_~i~0#1 := 0; 4#L30-2true [2023-11-19 07:40:29,266 INFO L750 eck$LassoCheckResult]: Loop: 4#L30-2true assume !!(main_~i~0#1 < main_~n~0#1);main_#t~post2#1 := main_~k~0#1;main_~k~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1;main_~i~0#1 := 2 + main_~i~0#1; 4#L30-2true [2023-11-19 07:40:29,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:29,273 INFO L85 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2023-11-19 07:40:29,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:29,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767526641] [2023-11-19 07:40:29,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:29,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:40:29,365 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:40:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:40:29,403 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:40:29,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:29,406 INFO L85 PathProgramCache]: Analyzing trace with hash 47, now seen corresponding path program 1 times [2023-11-19 07:40:29,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:29,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152432844] [2023-11-19 07:40:29,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:29,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:40:29,419 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:40:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:40:29,425 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:40:29,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:29,427 INFO L85 PathProgramCache]: Analyzing trace with hash 925676, now seen corresponding path program 1 times [2023-11-19 07:40:29,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:29,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426926022] [2023-11-19 07:40:29,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:29,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:29,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:40:29,456 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:40:29,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:40:29,482 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:40:29,619 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:40:29,620 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:40:29,620 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:40:29,620 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:40:29,621 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:40:29,621 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:40:29,621 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:40:29,621 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:40:29,622 INFO L133 ssoRankerPreferences]: Filename of dumped script: half_2.i_Iteration1_Loop [2023-11-19 07:40:29,622 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:40:29,622 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:40:29,639 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:40:29,657 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:40:29,662 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:40:29,710 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:40:29,710 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:40:29,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:40:29,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:29,716 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:40:29,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-19 07:40:29,720 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:40:29,721 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:40:29,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2023-11-19 07:40:29,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:40:29,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:29,748 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:40:29,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-19 07:40:29,752 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:40:29,752 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:40:29,905 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:40:29,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:29,910 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:40:29,910 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:40:29,910 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:40:29,910 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:40:29,911 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:40:29,911 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:40:29,911 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:40:29,911 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:40:29,911 INFO L133 ssoRankerPreferences]: Filename of dumped script: half_2.i_Iteration1_Loop [2023-11-19 07:40:29,911 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:40:29,911 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:40:29,913 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:40:29,927 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:40:29,933 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:40:29,973 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:40:29,978 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:40:29,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:40:29,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:29,981 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:40:29,989 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 07:40:30,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-19 07:40:30,005 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:40:30,005 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:40:30,006 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:40:30,006 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:40:30,006 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:40:30,012 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:40:30,013 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:40:30,024 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:40:30,033 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:40:30,033 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-19 07:40:30,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:40:30,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:30,066 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:40:30,074 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:40:30,075 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:40:30,076 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:40:30,076 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0#1, ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~n~0#1 - 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2023-11-19 07:40:30,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-19 07:40:30,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:30,096 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:40:30,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:30,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:40:30,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:30,165 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:40:30,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:30,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:30,204 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-11-19 07:40:30,207 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2023-11-19 07:40:30,275 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) Result 37 states and 49 transitions. Complement of second has 6 states. [2023-11-19 07:40:30,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-11-19 07:40:30,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2023-11-19 07:40:30,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 34 transitions. [2023-11-19 07:40:30,289 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 34 transitions. Stem has 3 letters. Loop has 1 letters. [2023-11-19 07:40:30,290 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:40:30,290 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 34 transitions. Stem has 4 letters. Loop has 1 letters. [2023-11-19 07:40:30,291 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:40:30,291 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 34 transitions. Stem has 3 letters. Loop has 2 letters. [2023-11-19 07:40:30,291 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:40:30,293 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 49 transitions. [2023-11-19 07:40:30,297 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-19 07:40:30,300 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 9 states and 11 transitions. [2023-11-19 07:40:30,302 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2023-11-19 07:40:30,302 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2023-11-19 07:40:30,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 11 transitions. [2023-11-19 07:40:30,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:30,303 INFO L218 hiAutomatonCegarLoop]: Abstraction has 9 states and 11 transitions. [2023-11-19 07:40:30,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 11 transitions. [2023-11-19 07:40:30,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-11-19 07:40:30,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 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) [2023-11-19 07:40:30,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2023-11-19 07:40:30,335 INFO L240 hiAutomatonCegarLoop]: Abstraction has 9 states and 11 transitions. [2023-11-19 07:40:30,336 INFO L428 stractBuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2023-11-19 07:40:30,336 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-19 07:40:30,336 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 11 transitions. [2023-11-19 07:40:30,337 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-19 07:40:30,337 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:40:30,337 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:40:30,338 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-11-19 07:40:30,338 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-19 07:40:30,338 INFO L748 eck$LassoCheckResult]: Stem: 94#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 95#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~post2#1, main_#t~post3#1, main_#t~post4#1, main_~n~0#1, main_~i~0#1, main_~k~0#1, main_~j~0#1;havoc main_~n~0#1;havoc main_~i~0#1;havoc main_~k~0#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 92#L27 assume !!(main_~n~0#1 <= 1000000);main_~k~0#1 := main_~n~0#1;main_~i~0#1 := 0; 87#L30-2 assume !(main_~i~0#1 < main_~n~0#1); 89#L30-3 main_~j~0#1 := 0; 93#L35-2 [2023-11-19 07:40:30,339 INFO L750 eck$LassoCheckResult]: Loop: 93#L35-2 assume !!(main_~j~0#1 < (if main_~n~0#1 < 0 && 0 != main_~n~0#1 % 2 then 1 + main_~n~0#1 / 2 else main_~n~0#1 / 2));assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 > 0 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 90#L18 assume !(0 == __VERIFIER_assert_~cond#1); 91#L18-2 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;main_#t~post3#1 := main_~k~0#1;main_~k~0#1 := main_#t~post3#1 - 1;havoc main_#t~post3#1;main_#t~post4#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 93#L35-2 [2023-11-19 07:40:30,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:30,340 INFO L85 PathProgramCache]: Analyzing trace with hash 28695914, now seen corresponding path program 1 times [2023-11-19 07:40:30,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:30,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056524041] [2023-11-19 07:40:30,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:30,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:40:30,359 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:40:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:40:30,367 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:40:30,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:30,373 INFO L85 PathProgramCache]: Analyzing trace with hash 59039, now seen corresponding path program 1 times [2023-11-19 07:40:30,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:30,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737079528] [2023-11-19 07:40:30,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:30,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:30,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:40:30,410 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:40:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:40:30,434 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:40:30,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:30,435 INFO L85 PathProgramCache]: Analyzing trace with hash 181511318, now seen corresponding path program 1 times [2023-11-19 07:40:30,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:30,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357609915] [2023-11-19 07:40:30,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:30,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:30,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:30,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:30,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:30,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357609915] [2023-11-19 07:40:30,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357609915] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:30,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:30,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:40:30,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770833727] [2023-11-19 07:40:30,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:30,964 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:40:30,964 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:40:30,964 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:40:30,965 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:40:30,965 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:40:30,965 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:40:30,965 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:40:30,965 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:40:30,965 INFO L133 ssoRankerPreferences]: Filename of dumped script: half_2.i_Iteration2_Loop [2023-11-19 07:40:30,966 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:40:30,966 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:40:30,970 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:40:30,973 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:40:30,981 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:40:30,991 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:40:31,020 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:40:31,023 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:40:31,290 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:40:31,291 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:40:31,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:40:31,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:31,293 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:40:31,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-19 07:40:31,300 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:40:31,300 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:40:31,329 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:40:31,329 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post3#1=0} Honda state: {ULTIMATE.start_main_#t~post3#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:40:31,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:31,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:40:31,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:31,362 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:40:31,373 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:40:31,373 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:40:31,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-19 07:40:31,395 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:40:31,396 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post4#1=0} Honda state: {ULTIMATE.start_main_#t~post4#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:40:31,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2023-11-19 07:40:31,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:40:31,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:31,417 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:40:31,425 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:40:31,425 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:40:31,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-19 07:40:31,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:31,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:40:31,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:31,468 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:40:31,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-19 07:40:31,473 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:40:31,473 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:40:31,526 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:40:31,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:31,541 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:40:31,541 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:40:31,541 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:40:31,541 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:40:31,541 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:40:31,541 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:40:31,542 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:40:31,542 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:40:31,542 INFO L133 ssoRankerPreferences]: Filename of dumped script: half_2.i_Iteration2_Loop [2023-11-19 07:40:31,542 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:40:31,542 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:40:31,544 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:40:31,548 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:40:31,551 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:40:31,554 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:40:31,562 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:40:31,590 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:40:31,895 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:40:31,896 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:40:31,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:40:31,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:31,897 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:40:31,900 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 07:40:31,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-19 07:40:31,915 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:40:31,915 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:40:31,915 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:40:31,915 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:40:31,915 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:40:31,916 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:40:31,916 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:40:31,932 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:40:31,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:31,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:40:31,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:31,958 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:40:31,968 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 07:40:31,981 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:40:31,981 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:40:31,981 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:40:31,981 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:40:31,981 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:40:31,982 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:40:31,982 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:40:31,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-19 07:40:31,992 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:40:32,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:32,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:40:32,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:32,018 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:40:32,026 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 07:40:32,039 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:40:32,039 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:40:32,039 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:40:32,039 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:40:32,039 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:40:32,040 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:40:32,040 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:40:32,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-19 07:40:32,060 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:40:32,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:32,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:40:32,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:32,082 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:40:32,087 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 07:40:32,100 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:40:32,100 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:40:32,100 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:40:32,101 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:40:32,101 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:40:32,103 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:40:32,103 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:40:32,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-19 07:40:32,113 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:40:32,116 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-19 07:40:32,116 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-19 07:40:32,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:40:32,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:32,120 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:40:32,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-19 07:40:32,125 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:40:32,125 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:40:32,125 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:40:32,125 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0#1) = 1*ULTIMATE.start_main_~k~0#1 Supporting invariants [] [2023-11-19 07:40:32,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:32,151 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:40:32,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:32,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:40:32,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:32,196 WARN L260 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:40:32,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:32,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:32,292 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2023-11-19 07:40:32,292 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2023-11-19 07:40:32,343 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) Result 12 states and 15 transitions. Complement of second has 6 states. [2023-11-19 07:40:32,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-19 07:40:32,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2023-11-19 07:40:32,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2023-11-19 07:40:32,347 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 3 letters. [2023-11-19 07:40:32,347 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:40:32,347 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 8 letters. Loop has 3 letters. [2023-11-19 07:40:32,348 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:40:32,348 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 6 letters. [2023-11-19 07:40:32,349 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:40:32,349 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 15 transitions. [2023-11-19 07:40:32,351 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-19 07:40:32,351 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 0 states and 0 transitions. [2023-11-19 07:40:32,351 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-19 07:40:32,352 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-19 07:40:32,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-19 07:40:32,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:32,352 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:40:32,353 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:40:32,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:32,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:40:32,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:40:32,357 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 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) [2023-11-19 07:40:32,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:32,360 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2023-11-19 07:40:32,360 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2023-11-19 07:40:32,361 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-19 07:40:32,361 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 07:40:32,361 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-19 07:40:32,361 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-19 07:40:32,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-19 07:40:32,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:32,362 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:40:32,362 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:40:32,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:40:32,364 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:40:32,364 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-19 07:40:32,364 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-19 07:40:32,364 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-19 07:40:32,366 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-19 07:40:32,381 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 07:40:32 BoogieIcfgContainer [2023-11-19 07:40:32,396 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-19 07:40:32,397 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:40:32,397 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:40:32,397 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:40:32,412 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:29" (3/4) ... [2023-11-19 07:40:32,414 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 07:40:32,415 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:40:32,416 INFO L158 Benchmark]: Toolchain (without parser) took 4075.09ms. Allocated memory is still 153.1MB. Free memory was 110.2MB in the beginning and 122.9MB in the end (delta: -12.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:40:32,416 INFO L158 Benchmark]: CDTParser took 0.65ms. Allocated memory is still 115.3MB. Free memory is still 84.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:40:32,417 INFO L158 Benchmark]: CACSL2BoogieTranslator took 357.32ms. Allocated memory is still 153.1MB. Free memory was 110.2MB in the beginning and 117.6MB in the end (delta: -7.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:40:32,417 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.80ms. Allocated memory is still 153.1MB. Free memory was 117.6MB in the beginning and 116.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:40:32,418 INFO L158 Benchmark]: Boogie Preprocessor took 48.65ms. Allocated memory is still 153.1MB. Free memory was 116.0MB in the beginning and 115.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:40:32,418 INFO L158 Benchmark]: RCFGBuilder took 356.49ms. Allocated memory is still 153.1MB. Free memory was 115.0MB in the beginning and 105.5MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:40:32,418 INFO L158 Benchmark]: BuchiAutomizer took 3244.47ms. Allocated memory is still 153.1MB. Free memory was 105.5MB in the beginning and 123.2MB in the end (delta: -17.7MB). Peak memory consumption was 55.8MB. Max. memory is 16.1GB. [2023-11-19 07:40:32,419 INFO L158 Benchmark]: Witness Printer took 18.47ms. Allocated memory is still 153.1MB. Free memory was 123.2MB in the beginning and 122.9MB in the end (delta: 307.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:40:32,421 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### [2023-11-19 07:40:32,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.65ms. Allocated memory is still 115.3MB. Free memory is still 84.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 357.32ms. Allocated memory is still 153.1MB. Free memory was 110.2MB in the beginning and 117.6MB in the end (delta: -7.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.80ms. Allocated memory is still 153.1MB. Free memory was 117.6MB in the beginning and 116.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.65ms. Allocated memory is still 153.1MB. Free memory was 116.0MB in the beginning and 115.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 356.49ms. Allocated memory is still 153.1MB. Free memory was 115.0MB in the beginning and 105.5MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 3244.47ms. Allocated memory is still 153.1MB. Free memory was 105.5MB in the beginning and 123.2MB in the end (delta: -17.7MB). Peak memory consumption was 55.8MB. Max. memory is 16.1GB. * Witness Printer took 18.47ms. Allocated memory is still 153.1MB. Free memory was 123.2MB in the beginning and 122.9MB in the end (delta: 307.1kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function ((-1 * i) + n) and consists of 4 locations. One deterministic module has affine ranking function k and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.1s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 2.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 3. 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 [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15 IncrementalHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 19 mSDtfsCounter, 15 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital27 mio100 ax100 hnf100 lsp89 ukn100 mio100 lsp100 div180 bol100 ite100 ukn100 eq139 hnf96 smp70 dnf130 smp94 tf107 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 96ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-11-19 07:40:32,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cdd8ac-740f-40b2-9321-b3c99739cb1a/bin/uautomizer-verify-uCwYo4JHxu/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 Result: TRUE