./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 cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/half_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl --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-cf1a783 [2023-11-12 02:20:15,666 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:20:15,736 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-12 02:20:15,743 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:20:15,744 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:20:15,773 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:20:15,774 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:20:15,774 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:20:15,776 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:20:15,776 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:20:15,777 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:20:15,778 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-12 02:20:15,778 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-12 02:20:15,779 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-12 02:20:15,780 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-12 02:20:15,780 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-12 02:20:15,781 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-12 02:20:15,782 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:20:15,782 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-12 02:20:15,783 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:20:15,784 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:20:15,785 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:20:15,785 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:20:15,786 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-12 02:20:15,786 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-12 02:20:15,787 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-12 02:20:15,787 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:20:15,788 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:20:15,788 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:20:15,789 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-12 02:20:15,789 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:20:15,790 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:20:15,791 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:20:15,791 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:20:15,791 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:20:15,792 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-12 02:20:15,792 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_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b362a98d328467ff4a069dbed2be3429090ca070e60d49c76297e4bb94402b7 [2023-11-12 02:20:16,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:20:16,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:20:16,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:20:16,182 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:20:16,185 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:20:16,186 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/loop-invgen/half_2.i [2023-11-12 02:20:19,280 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:20:19,541 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:20:19,542 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/sv-benchmarks/c/loop-invgen/half_2.i [2023-11-12 02:20:19,550 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/data/63dc59e3d/2ea115d22bb24fda8f5ac3102f8c219a/FLAG86d863f40 [2023-11-12 02:20:19,577 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/data/63dc59e3d/2ea115d22bb24fda8f5ac3102f8c219a [2023-11-12 02:20:19,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:20:19,587 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:20:19,589 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:20:19,591 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:20:19,597 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:20:19,598 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:20:19" (1/1) ... [2023-11-12 02:20:19,599 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c44843d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:19, skipping insertion in model container [2023-11-12 02:20:19,600 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:20:19" (1/1) ... [2023-11-12 02:20:19,624 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:20:19,772 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:20:19,783 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:20:19,806 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:20:19,822 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:20:19,822 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:19 WrapperNode [2023-11-12 02:20:19,822 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:20:19,824 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:20:19,824 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:20:19,824 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:20:19,832 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:19" (1/1) ... [2023-11-12 02:20:19,839 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:19" (1/1) ... [2023-11-12 02:20:19,858 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 50 [2023-11-12 02:20:19,859 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:20:19,860 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:20:19,860 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:20:19,860 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:20:19,867 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:19" (1/1) ... [2023-11-12 02:20:19,867 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:19" (1/1) ... [2023-11-12 02:20:19,869 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:19" (1/1) ... [2023-11-12 02:20:19,869 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:19" (1/1) ... [2023-11-12 02:20:19,873 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:19" (1/1) ... [2023-11-12 02:20:19,876 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:19" (1/1) ... [2023-11-12 02:20:19,877 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:19" (1/1) ... [2023-11-12 02:20:19,878 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:19" (1/1) ... [2023-11-12 02:20:19,880 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:20:19,881 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:20:19,881 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:20:19,882 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:20:19,883 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:19" (1/1) ... [2023-11-12 02:20:19,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:20:19,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:19,924 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:20:19,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-12 02:20:19,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:20:19,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:20:19,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:20:19,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:20:20,041 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:20:20,043 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:20:20,230 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:20:20,236 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:20:20,237 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 02:20:20,239 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:20:20 BoogieIcfgContainer [2023-11-12 02:20:20,239 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:20:20,240 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-12 02:20:20,240 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-12 02:20:20,244 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-12 02:20:20,245 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-12 02:20:20,245 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 12.11 02:20:19" (1/3) ... [2023-11-12 02:20:20,246 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@30362dfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.11 02:20:20, skipping insertion in model container [2023-11-12 02:20:20,247 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-12 02:20:20,247 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:19" (2/3) ... [2023-11-12 02:20:20,247 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@30362dfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.11 02:20:20, skipping insertion in model container [2023-11-12 02:20:20,247 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-12 02:20:20,247 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:20:20" (3/3) ... [2023-11-12 02:20:20,249 INFO L332 chiAutomizerObserver]: Analyzing ICFG half_2.i [2023-11-12 02:20:20,299 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-12 02:20:20,299 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-12 02:20:20,299 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-12 02:20:20,300 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-12 02:20:20,300 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-12 02:20:20,300 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-12 02:20:20,300 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-12 02:20:20,300 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-12 02:20:20,304 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) [2023-11-12 02:20:20,319 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2023-11-12 02:20:20,319 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-12 02:20:20,319 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-12 02:20:20,324 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-12 02:20:20,324 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-11-12 02:20:20,324 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-12 02:20:20,325 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) [2023-11-12 02:20:20,326 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2023-11-12 02:20:20,326 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-12 02:20:20,327 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-12 02:20:20,327 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-12 02:20:20,327 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-11-12 02:20:20,333 INFO L748 eck$LassoCheckResult]: Stem: 11#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~post2#1, main_#t~post3#1, main_#t~post4#1, main_~n~0#1, main_~i~0#1, main_~k~0#1, main_~j~0#1;havoc main_~n~0#1;havoc main_~i~0#1;havoc main_~k~0#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 5#L27true assume !!(main_~n~0#1 <= 1000000);main_~k~0#1 := main_~n~0#1;main_~i~0#1 := 0; 4#L30-2true [2023-11-12 02:20:20,333 INFO L750 eck$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 [2023-11-12 02:20:20,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:20,338 INFO L85 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2023-11-12 02:20:20,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:20,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145118670] [2023-11-12 02:20:20,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:20,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:20:20,443 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:20:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:20:20,470 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:20:20,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:20,473 INFO L85 PathProgramCache]: Analyzing trace with hash 47, now seen corresponding path program 1 times [2023-11-12 02:20:20,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:20,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526862369] [2023-11-12 02:20:20,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:20,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:20,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:20:20,494 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:20:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:20:20,506 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:20:20,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:20,509 INFO L85 PathProgramCache]: Analyzing trace with hash 925676, now seen corresponding path program 1 times [2023-11-12 02:20:20,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:20,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720310479] [2023-11-12 02:20:20,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:20,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:20,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:20:20,550 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:20:20,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:20:20,581 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:20:20,702 INFO L210 LassoAnalysis]: Preferences: [2023-11-12 02:20:20,704 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-12 02:20:20,704 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-12 02:20:20,704 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-12 02:20:20,705 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-12 02:20:20,705 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:20:20,705 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-12 02:20:20,705 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-12 02:20:20,706 INFO L133 ssoRankerPreferences]: Filename of dumped script: half_2.i_Iteration1_Loop [2023-11-12 02:20:20,706 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-12 02:20:20,706 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-12 02:20:20,726 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:20:20,755 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:20:20,762 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:20:20,827 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-12 02:20:20,828 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-12 02:20:20,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:20:20,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:20,840 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:20:20,852 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-12 02:20:20,852 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-12 02:20:20,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-12 02:20:20,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:20:20,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:20:20,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:20,888 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:20:20,897 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-12 02:20:20,898 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-12 02:20:20,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-12 02:20:21,091 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-12 02:20:21,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:20:21,100 INFO L210 LassoAnalysis]: Preferences: [2023-11-12 02:20:21,101 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-12 02:20:21,101 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-12 02:20:21,101 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-12 02:20:21,101 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-12 02:20:21,101 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:20:21,101 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-12 02:20:21,102 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-12 02:20:21,102 INFO L133 ssoRankerPreferences]: Filename of dumped script: half_2.i_Iteration1_Loop [2023-11-12 02:20:21,102 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-12 02:20:21,102 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-12 02:20:21,104 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:20:21,117 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:20:21,122 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:20:21,167 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-12 02:20:21,172 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-12 02:20:21,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:20:21,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:21,176 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:20:21,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-12 02:20:21,182 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 [2023-11-12 02:20:21,195 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-12 02:20:21,195 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-12 02:20:21,195 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-12 02:20:21,196 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-12 02:20:21,196 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-12 02:20:21,201 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-12 02:20:21,201 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-12 02:20:21,224 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-12 02:20:21,233 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-12 02:20:21,233 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-12 02:20:21,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:20:21,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:21,271 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:20:21,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-12 02:20:21,274 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-12 02:20:21,274 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-12 02:20:21,275 INFO L513 LassoAnalysis]: Proved termination. [2023-11-12 02:20:21,276 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 [] [2023-11-12 02:20:21,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:20:21,288 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-12 02:20:21,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:21,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:20:21,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:20:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:21,380 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:20:21,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:20:21,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:21,442 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 [2023-11-12 02:20:21,449 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) [2023-11-12 02:20:21,528 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. [2023-11-12 02:20:21,530 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 [2023-11-12 02:20:21,535 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) [2023-11-12 02:20:21,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 34 transitions. [2023-11-12 02:20:21,538 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 34 transitions. Stem has 3 letters. Loop has 1 letters. [2023-11-12 02:20:21,539 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-12 02:20:21,539 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 34 transitions. Stem has 4 letters. Loop has 1 letters. [2023-11-12 02:20:21,539 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-12 02:20:21,540 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 34 transitions. Stem has 3 letters. Loop has 2 letters. [2023-11-12 02:20:21,540 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-12 02:20:21,541 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 49 transitions. [2023-11-12 02:20:21,545 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-12 02:20:21,551 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 9 states and 11 transitions. [2023-11-12 02:20:21,553 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2023-11-12 02:20:21,554 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2023-11-12 02:20:21,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 11 transitions. [2023-11-12 02:20:21,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:21,555 INFO L218 hiAutomatonCegarLoop]: Abstraction has 9 states and 11 transitions. [2023-11-12 02:20:21,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 11 transitions. [2023-11-12 02:20:21,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-11-12 02:20:21,580 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) [2023-11-12 02:20:21,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2023-11-12 02:20:21,582 INFO L240 hiAutomatonCegarLoop]: Abstraction has 9 states and 11 transitions. [2023-11-12 02:20:21,582 INFO L428 stractBuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2023-11-12 02:20:21,582 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-12 02:20:21,583 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 11 transitions. [2023-11-12 02:20:21,583 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-12 02:20:21,583 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-12 02:20:21,583 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-12 02:20:21,584 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-11-12 02:20:21,584 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-12 02:20:21,584 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 [2023-11-12 02:20:21,585 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 [2023-11-12 02:20:21,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:21,586 INFO L85 PathProgramCache]: Analyzing trace with hash 28695914, now seen corresponding path program 1 times [2023-11-12 02:20:21,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:21,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371378355] [2023-11-12 02:20:21,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:21,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:21,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:20:21,595 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:20:21,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:20:21,603 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:20:21,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:21,604 INFO L85 PathProgramCache]: Analyzing trace with hash 59039, now seen corresponding path program 1 times [2023-11-12 02:20:21,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:21,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653739291] [2023-11-12 02:20:21,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:21,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:20:21,620 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:20:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:20:21,631 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:20:21,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:21,632 INFO L85 PathProgramCache]: Analyzing trace with hash 181511318, now seen corresponding path program 1 times [2023-11-12 02:20:21,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:21,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041623980] [2023-11-12 02:20:21,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:21,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:21,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2023-11-12 02:20:21,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:21,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:21,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041623980] [2023-11-12 02:20:21,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041623980] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:21,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:21,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:20:21,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278820098] [2023-11-12 02:20:21,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:22,107 INFO L210 LassoAnalysis]: Preferences: [2023-11-12 02:20:22,107 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-12 02:20:22,107 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-12 02:20:22,107 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-12 02:20:22,107 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-12 02:20:22,110 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:20:22,110 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-12 02:20:22,110 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-12 02:20:22,110 INFO L133 ssoRankerPreferences]: Filename of dumped script: half_2.i_Iteration2_Loop [2023-11-12 02:20:22,110 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-12 02:20:22,111 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-12 02:20:22,116 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:20:22,119 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:20:22,122 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:20:22,131 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:20:22,154 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:20:22,157 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:20:22,426 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-12 02:20:22,426 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-12 02:20:22,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:20:22,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:22,427 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:20:22,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-12 02:20:22,434 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-12 02:20:22,434 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-12 02:20:22,459 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-12 02:20:22,459 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: [] [2023-11-12 02:20:22,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:20:22,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:20:22,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:22,470 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:20:22,482 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-12 02:20:22,482 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-12 02:20:22,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-12 02:20:22,509 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-12 02:20:22,509 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: [] [2023-11-12 02:20:22,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:20:22,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:20:22,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:22,518 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:20:22,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-12 02:20:22,527 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-12 02:20:22,527 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-12 02:20:22,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-12 02:20:22,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:20:22,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:22,550 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:20:22,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-12 02:20:22,554 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-12 02:20:22,554 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-12 02:20:22,599 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-12 02:20:22,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2023-11-12 02:20:22,605 INFO L210 LassoAnalysis]: Preferences: [2023-11-12 02:20:22,605 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-12 02:20:22,605 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-12 02:20:22,605 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-12 02:20:22,605 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-12 02:20:22,605 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:20:22,605 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-12 02:20:22,605 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-12 02:20:22,605 INFO L133 ssoRankerPreferences]: Filename of dumped script: half_2.i_Iteration2_Loop [2023-11-12 02:20:22,606 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-12 02:20:22,606 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-12 02:20:22,607 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:20:22,616 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:20:22,618 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:20:22,621 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:20:22,627 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:20:22,649 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:20:22,903 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-12 02:20:22,904 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-12 02:20:22,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:20:22,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:22,909 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:20:22,917 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 [2023-11-12 02:20:22,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-12 02:20:22,931 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-12 02:20:22,931 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-12 02:20:22,931 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-12 02:20:22,931 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-12 02:20:22,931 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-12 02:20:22,932 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-12 02:20:22,932 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-12 02:20:22,941 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-12 02:20:22,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-12 02:20:22,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:20:22,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:22,952 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:20:22,967 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 [2023-11-12 02:20:22,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-12 02:20:22,980 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-12 02:20:22,980 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-12 02:20:22,980 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-12 02:20:22,981 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-12 02:20:22,981 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-12 02:20:22,981 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-12 02:20:22,982 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-12 02:20:22,998 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-12 02:20:23,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-12 02:20:23,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:20:23,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:23,009 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:20:23,013 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 [2023-11-12 02:20:23,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-12 02:20:23,026 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-12 02:20:23,027 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-12 02:20:23,027 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-12 02:20:23,027 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-12 02:20:23,027 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-12 02:20:23,028 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-12 02:20:23,028 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-12 02:20:23,039 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-12 02:20:23,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-12 02:20:23,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:20:23,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:23,050 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:20:23,059 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 [2023-11-12 02:20:23,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-12 02:20:23,072 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-12 02:20:23,072 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-12 02:20:23,072 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-12 02:20:23,072 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-12 02:20:23,073 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-12 02:20:23,074 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-12 02:20:23,074 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-12 02:20:23,084 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-12 02:20:23,086 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-12 02:20:23,087 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-12 02:20:23,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:20:23,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:23,088 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:20:23,100 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-12 02:20:23,100 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-12 02:20:23,100 INFO L513 LassoAnalysis]: Proved termination. [2023-11-12 02:20:23,100 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 [] [2023-11-12 02:20:23,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-12 02:20:23,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-12 02:20:23,109 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-12 02:20:23,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:23,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:20:23,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:20:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:23,162 WARN L260 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 02:20:23,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:20:23,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2023-11-12 02:20:23,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:23,337 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 [2023-11-12 02:20:23,337 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) [2023-11-12 02:20:23,390 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. [2023-11-12 02:20:23,390 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 [2023-11-12 02:20:23,391 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) [2023-11-12 02:20:23,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2023-11-12 02:20:23,392 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 3 letters. [2023-11-12 02:20:23,393 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-12 02:20:23,393 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 8 letters. Loop has 3 letters. [2023-11-12 02:20:23,393 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-12 02:20:23,393 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 6 letters. [2023-11-12 02:20:23,394 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-12 02:20:23,394 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 15 transitions. [2023-11-12 02:20:23,395 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-12 02:20:23,395 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 0 states and 0 transitions. [2023-11-12 02:20:23,395 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-12 02:20:23,396 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-12 02:20:23,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-12 02:20:23,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:23,396 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-12 02:20:23,396 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-12 02:20:23,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:23,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:20:23,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:20:23,401 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) [2023-11-12 02:20:23,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:20:23,404 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2023-11-12 02:20:23,405 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2023-11-12 02:20:23,405 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-12 02:20:23,405 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2023-11-12 02:20:23,405 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-12 02:20:23,405 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-12 02:20:23,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-12 02:20:23,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:23,406 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-12 02:20:23,406 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-12 02:20:23,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:20:23,407 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-12 02:20:23,408 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-12 02:20:23,408 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-12 02:20:23,408 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-12 02:20:23,408 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-12 02:20:23,417 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.11 02:20:23 BoogieIcfgContainer [2023-11-12 02:20:23,417 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-12 02:20:23,418 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:20:23,418 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:20:23,418 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:20:23,419 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:20:20" (3/4) ... [2023-11-12 02:20:23,421 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-12 02:20:23,422 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:20:23,424 INFO L158 Benchmark]: Toolchain (without parser) took 3836.20ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 121.5MB in the beginning and 140.9MB in the end (delta: -19.4MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2023-11-12 02:20:23,424 INFO L158 Benchmark]: CDTParser took 0.63ms. Allocated memory is still 113.2MB. Free memory was 85.8MB in the beginning and 85.7MB in the end (delta: 74.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:20:23,425 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.54ms. Allocated memory is still 148.9MB. Free memory was 121.5MB in the beginning and 111.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 02:20:23,426 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.15ms. Allocated memory is still 148.9MB. Free memory was 111.0MB in the beginning and 109.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:20:23,426 INFO L158 Benchmark]: Boogie Preprocessor took 20.87ms. Allocated memory is still 148.9MB. Free memory was 109.4MB in the beginning and 108.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:20:23,427 INFO L158 Benchmark]: RCFGBuilder took 358.06ms. Allocated memory is still 148.9MB. Free memory was 108.4MB in the beginning and 115.6MB in the end (delta: -7.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-12 02:20:23,427 INFO L158 Benchmark]: BuchiAutomizer took 3177.09ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 115.6MB in the beginning and 140.9MB in the end (delta: -25.4MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2023-11-12 02:20:23,428 INFO L158 Benchmark]: Witness Printer took 4.87ms. Allocated memory is still 180.4MB. Free memory is still 140.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:20:23,431 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63ms. Allocated memory is still 113.2MB. Free memory was 85.8MB in the beginning and 85.7MB in the end (delta: 74.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 233.54ms. Allocated memory is still 148.9MB. Free memory was 121.5MB in the beginning and 111.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.15ms. Allocated memory is still 148.9MB. Free memory was 111.0MB in the beginning and 109.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.87ms. Allocated memory is still 148.9MB. Free memory was 109.4MB in the beginning and 108.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 358.06ms. Allocated memory is still 148.9MB. Free memory was 108.4MB in the beginning and 115.6MB in the end (delta: -7.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 3177.09ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 115.6MB in the beginning and 140.9MB in the end (delta: -25.4MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * Witness Printer took 4.87ms. Allocated memory is still 180.4MB. Free memory is still 140.9MB. 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 2.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. 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, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.1s 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: 101ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-11-12 02:20:23,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9f1e5c-454c-466d-a8c0-dd67567d64e4/bin/uautomizer-verify-uTZkv6EMXl/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