./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c --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_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/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_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/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_b8b942b3-a0b2-4117-8dec-323468ddb11d/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 95f89ee6bcff8f17eb3e93b344abecdfb8ddea0894d1b25afafccf6235d7ced6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:48:17,473 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:48:17,598 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-19 07:48:17,602 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:48:17,604 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:48:17,642 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:48:17,644 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:48:17,644 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:48:17,646 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:48:17,651 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:48:17,652 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:48:17,653 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-19 07:48:17,654 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-19 07:48:17,655 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-19 07:48:17,656 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-19 07:48:17,657 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-19 07:48:17,657 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-19 07:48:17,658 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:48:17,659 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-19 07:48:17,659 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:48:17,660 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:48:17,661 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:48:17,661 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:48:17,662 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-19 07:48:17,662 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-19 07:48:17,663 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-19 07:48:17,663 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:48:17,663 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:48:17,664 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:48:17,664 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-19 07:48:17,666 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:48:17,666 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:48:17,667 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:48:17,667 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:48:17,667 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:48:17,668 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-19 07:48:17,668 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_b8b942b3-a0b2-4117-8dec-323468ddb11d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95f89ee6bcff8f17eb3e93b344abecdfb8ddea0894d1b25afafccf6235d7ced6 [2023-11-19 07:48:17,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:48:17,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:48:17,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:48:17,992 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:48:17,993 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:48:17,994 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2023-11-19 07:48:21,144 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:48:21,435 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:48:21,440 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2023-11-19 07:48:21,454 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/data/4d152800b/8682ba2e14d54a4ea958a1da2ea3eece/FLAG0ea2410cd [2023-11-19 07:48:21,471 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/data/4d152800b/8682ba2e14d54a4ea958a1da2ea3eece [2023-11-19 07:48:21,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:48:21,478 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:48:21,481 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:48:21,482 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:48:21,487 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:48:21,490 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:21" (1/1) ... [2023-11-19 07:48:21,491 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e34678f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:21, skipping insertion in model container [2023-11-19 07:48:21,492 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:21" (1/1) ... [2023-11-19 07:48:21,541 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:48:21,793 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:48:21,815 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:48:21,870 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:48:21,885 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:48:21,886 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:21 WrapperNode [2023-11-19 07:48:21,886 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:48:21,887 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:48:21,887 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:48:21,887 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:48:21,895 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:21" (1/1) ... [2023-11-19 07:48:21,905 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:21" (1/1) ... [2023-11-19 07:48:21,938 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 11, calls inlined = 9, statements flattened = 371 [2023-11-19 07:48:21,939 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:48:21,939 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:48:21,940 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:48:21,940 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:48:21,949 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:21" (1/1) ... [2023-11-19 07:48:21,950 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:21" (1/1) ... [2023-11-19 07:48:21,954 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:21" (1/1) ... [2023-11-19 07:48:21,955 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:21" (1/1) ... [2023-11-19 07:48:21,968 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:21" (1/1) ... [2023-11-19 07:48:21,986 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:21" (1/1) ... [2023-11-19 07:48:21,989 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:21" (1/1) ... [2023-11-19 07:48:21,991 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:21" (1/1) ... [2023-11-19 07:48:21,996 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:48:22,004 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:48:22,004 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:48:22,004 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:48:22,005 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:21" (1/1) ... [2023-11-19 07:48:22,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:22,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:22,057 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:22,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-19 07:48:22,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:48:22,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:48:22,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:48:22,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:48:22,175 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:48:22,178 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:48:22,820 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:48:22,830 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:48:22,830 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-19 07:48:22,835 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:22 BoogieIcfgContainer [2023-11-19 07:48:22,835 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:48:22,836 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-19 07:48:22,837 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-19 07:48:22,841 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-19 07:48:22,842 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:48:22,842 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 07:48:21" (1/3) ... [2023-11-19 07:48:22,843 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7a5d4844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 07:48:22, skipping insertion in model container [2023-11-19 07:48:22,843 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:48:22,843 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:21" (2/3) ... [2023-11-19 07:48:22,844 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7a5d4844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 07:48:22, skipping insertion in model container [2023-11-19 07:48:22,844 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:48:22,844 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:22" (3/3) ... [2023-11-19 07:48:22,846 INFO L332 chiAutomizerObserver]: Analyzing ICFG soft_float_3a.c.cil.c [2023-11-19 07:48:22,907 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-19 07:48:22,907 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-19 07:48:22,907 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-19 07:48:22,907 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-19 07:48:22,907 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-19 07:48:22,907 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-19 07:48:22,907 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-19 07:48:22,908 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-19 07:48:22,912 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 104 states, 103 states have (on average 1.7475728155339805) internal successors, (180), 103 states have internal predecessors, (180), 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 07:48:22,939 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2023-11-19 07:48:22,940 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:48:22,940 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:48:22,946 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-19 07:48:22,947 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-19 07:48:22,947 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-19 07:48:22,948 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 104 states, 103 states have (on average 1.7475728155339805) internal successors, (180), 103 states have internal predecessors, (180), 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 07:48:22,957 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2023-11-19 07:48:22,957 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:48:22,958 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:48:22,958 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-19 07:48:22,958 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-19 07:48:22,968 INFO L748 eck$LassoCheckResult]: Stem: 25#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(22, 2);call #Ultimate.allocInit(12, 3); 35#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~ret19#1, main_#t~ret20#1, main_#t~ret21#1, main_#t~ret22#1, main_#t~ret23#1, main_~a~0#1, main_~ma~2#1, main_~ea~2#1, main_~b~0#1, main_~mb~2#1, main_~eb~2#1, main_~r_mul~0#1, main_~zero~0#1, main_~one~0#1, main_~sb~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~tmp___1~0#1, main_~__retres16~0#1;havoc main_~a~0#1;havoc main_#t~nondet15#1;main_~ma~2#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_#t~nondet16#1;main_~ea~2#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~b~0#1;havoc main_#t~nondet17#1;main_~mb~2#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_#t~nondet18#1;main_~eb~2#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~r_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sb~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~tmp___1~0#1;havoc main_~__retres16~0#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 0, 0;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 68#L29true assume !(0 == base2flt_~m#1 % 4294967296); 87#L35true assume !(base2flt_~m#1 % 4294967296 < 16777216); 49#L57-2true [2023-11-19 07:48:22,969 INFO L750 eck$LassoCheckResult]: Loop: 49#L57-2true assume !false; 34#L58true assume base2flt_~m#1 % 4294967296 >= 33554432; 76#L59true assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 % 4294967296 / 2; 49#L57-2true [2023-11-19 07:48:22,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:22,975 INFO L85 PathProgramCache]: Analyzing trace with hash 925696, now seen corresponding path program 1 times [2023-11-19 07:48:22,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:22,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005994182] [2023-11-19 07:48:22,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:22,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:23,240 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 07:48:23,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:23,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005994182] [2023-11-19 07:48:23,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005994182] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:23,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:23,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:48:23,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947802719] [2023-11-19 07:48:23,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:23,252 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:48:23,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:23,254 INFO L85 PathProgramCache]: Analyzing trace with hash 74612, now seen corresponding path program 1 times [2023-11-19 07:48:23,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:23,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599216222] [2023-11-19 07:48:23,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:23,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:23,284 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:48:23,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:23,319 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:48:23,375 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:48:23,375 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:48:23,376 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:48:23,376 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:48:23,376 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:48:23,376 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:23,376 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:48:23,376 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:48:23,376 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration1_Loop [2023-11-19 07:48:23,377 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:48:23,377 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:48:23,395 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 07:48:23,412 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 07:48:23,546 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:48:23,547 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:48:23,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:23,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:23,558 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:23,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-19 07:48:23,565 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:48:23,566 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:48:23,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:23,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:23,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:23,637 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:23,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-19 07:48:23,642 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:48:23,642 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:48:23,681 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:48:23,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:23,685 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:48:23,685 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:48:23,685 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:48:23,685 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:48:23,685 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:48:23,685 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:23,685 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:48:23,685 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:48:23,686 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration1_Loop [2023-11-19 07:48:23,686 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:48:23,686 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:48:23,687 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 07:48:23,702 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 07:48:23,820 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:48:23,825 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:48:23,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:23,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:23,829 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:23,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-19 07:48:23,842 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 07:48:23,855 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:48:23,855 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:48:23,855 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:48:23,856 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:48:23,856 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:48:23,859 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:48:23,860 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:48:23,869 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:48:23,874 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:48:23,875 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-19 07:48:23,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:23,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:23,906 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:23,918 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:48:23,918 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:48:23,919 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:48:23,919 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = -2*ULTIMATE.start_base2flt_~e#1 + 253 Supporting invariants [] [2023-11-19 07:48:23,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-19 07:48:23,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:23,946 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:48:23,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:24,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:48:24,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:24,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:48:24,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:24,051 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 07:48:24,099 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 07:48:24,106 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 104 states, 103 states have (on average 1.7475728155339805) internal successors, (180), 103 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:24,261 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 104 states, 103 states have (on average 1.7475728155339805) internal successors, (180), 103 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 309 states and 529 transitions. Complement of second has 6 states. [2023-11-19 07:48:24,266 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 07:48:24,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:24,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 350 transitions. [2023-11-19 07:48:24,277 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 350 transitions. Stem has 4 letters. Loop has 3 letters. [2023-11-19 07:48:24,278 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:48:24,279 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 350 transitions. Stem has 7 letters. Loop has 3 letters. [2023-11-19 07:48:24,280 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:48:24,280 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 350 transitions. Stem has 4 letters. Loop has 6 letters. [2023-11-19 07:48:24,280 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:48:24,281 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 309 states and 529 transitions. [2023-11-19 07:48:24,299 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2023-11-19 07:48:24,306 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 309 states to 109 states and 174 transitions. [2023-11-19 07:48:24,307 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 105 [2023-11-19 07:48:24,308 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2023-11-19 07:48:24,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 109 states and 174 transitions. [2023-11-19 07:48:24,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:48:24,310 INFO L218 hiAutomatonCegarLoop]: Abstraction has 109 states and 174 transitions. [2023-11-19 07:48:24,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states and 174 transitions. [2023-11-19 07:48:24,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 93. [2023-11-19 07:48:24,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 93 states have (on average 1.6451612903225807) internal successors, (153), 92 states have internal predecessors, (153), 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 07:48:24,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 153 transitions. [2023-11-19 07:48:24,344 INFO L240 hiAutomatonCegarLoop]: Abstraction has 93 states and 153 transitions. [2023-11-19 07:48:24,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:24,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:48:24,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:24,348 INFO L87 Difference]: Start difference. First operand 93 states and 153 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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 07:48:24,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:24,437 INFO L93 Difference]: Finished difference Result 45 states and 66 transitions. [2023-11-19 07:48:24,437 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 66 transitions. [2023-11-19 07:48:24,441 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2023-11-19 07:48:24,444 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 45 states and 66 transitions. [2023-11-19 07:48:24,445 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2023-11-19 07:48:24,445 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2023-11-19 07:48:24,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 66 transitions. [2023-11-19 07:48:24,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:24,446 INFO L218 hiAutomatonCegarLoop]: Abstraction has 45 states and 66 transitions. [2023-11-19 07:48:24,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 66 transitions. [2023-11-19 07:48:24,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-11-19 07:48:24,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 45 states have (on average 1.4666666666666666) internal successors, (66), 44 states have internal predecessors, (66), 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 07:48:24,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 66 transitions. [2023-11-19 07:48:24,460 INFO L240 hiAutomatonCegarLoop]: Abstraction has 45 states and 66 transitions. [2023-11-19 07:48:24,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:24,461 INFO L428 stractBuchiCegarLoop]: Abstraction has 45 states and 66 transitions. [2023-11-19 07:48:24,461 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-19 07:48:24,462 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 45 states and 66 transitions. [2023-11-19 07:48:24,465 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2023-11-19 07:48:24,465 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:48:24,466 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:48:24,466 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:24,466 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-19 07:48:24,467 INFO L748 eck$LassoCheckResult]: Stem: 638#$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(22, 2);call #Ultimate.allocInit(12, 3); 604#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~ret19#1, main_#t~ret20#1, main_#t~ret21#1, main_#t~ret22#1, main_#t~ret23#1, main_~a~0#1, main_~ma~2#1, main_~ea~2#1, main_~b~0#1, main_~mb~2#1, main_~eb~2#1, main_~r_mul~0#1, main_~zero~0#1, main_~one~0#1, main_~sb~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~tmp___1~0#1, main_~__retres16~0#1;havoc main_~a~0#1;havoc main_#t~nondet15#1;main_~ma~2#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_#t~nondet16#1;main_~ea~2#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~b~0#1;havoc main_#t~nondet17#1;main_~mb~2#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_#t~nondet18#1;main_~eb~2#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~r_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sb~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~tmp___1~0#1;havoc main_~__retres16~0#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 0, 0;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 605#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 635#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 629#base2flt_returnLabel#1 main_#t~ret19#1 := base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;havoc base2flt_#in~m#1, base2flt_#in~e#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret19#1;havoc main_#t~ret19#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 1, 0;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 630#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 612#L35-1 assume base2flt_~m#1 % 4294967296 < 16777216; 613#L47-3 [2023-11-19 07:48:24,467 INFO L750 eck$LassoCheckResult]: Loop: 613#L47-3 assume !false; 632#L38-1 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * (base2flt_~m#1 % 4294967296); 626#L47-2 assume base2flt_~m#1 % 4294967296 < 16777216; 613#L47-3 [2023-11-19 07:48:24,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:24,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1807335815, now seen corresponding path program 1 times [2023-11-19 07:48:24,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:24,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569115908] [2023-11-19 07:48:24,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:24,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:24,492 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:48:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:24,521 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:48:24,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:24,522 INFO L85 PathProgramCache]: Analyzing trace with hash 134251, now seen corresponding path program 1 times [2023-11-19 07:48:24,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:24,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773160737] [2023-11-19 07:48:24,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:24,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:24,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:24,540 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:48:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:24,545 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:48:24,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:24,546 INFO L85 PathProgramCache]: Analyzing trace with hash 631346469, now seen corresponding path program 1 times [2023-11-19 07:48:24,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:24,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770129814] [2023-11-19 07:48:24,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:24,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:24,609 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:48:24,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:24,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:24,632 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:48:24,671 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:48:24,672 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:48:24,672 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:48:24,672 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:48:24,672 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:48:24,673 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:24,675 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:48:24,675 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:48:24,675 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration2_Loop [2023-11-19 07:48:24,675 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:48:24,675 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:48:24,677 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 07:48:24,686 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 07:48:24,811 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:48:24,811 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:48:24,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:24,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:24,813 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:24,826 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:48:24,826 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:48:24,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-19 07:48:24,866 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:48:24,867 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m#1=0} Honda state: {ULTIMATE.start_base2flt_~m#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:48:24,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:24,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:24,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:24,878 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:24,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-19 07:48:24,881 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:48:24,881 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:48:24,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:24,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:24,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:24,926 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:24,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-19 07:48:24,929 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:48:24,931 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:48:24,960 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:48:24,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:24,964 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:48:24,965 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:48:24,965 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:48:24,965 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:48:24,965 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:48:24,965 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:24,965 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:48:24,965 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:48:24,965 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration2_Loop [2023-11-19 07:48:24,966 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:48:24,966 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:48:24,967 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 07:48:24,986 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 07:48:25,115 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:48:25,116 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:48:25,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:25,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:25,119 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:25,130 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 07:48:25,143 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:48:25,143 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:48:25,143 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:48:25,144 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:48:25,144 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:48:25,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-19 07:48:25,151 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:48:25,152 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:48:25,168 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:48:25,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:25,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:25,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:25,193 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:25,201 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 07:48:25,213 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:48:25,214 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:48:25,214 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:48:25,214 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:48:25,214 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:48:25,216 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:48:25,216 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:48:25,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-19 07:48:25,232 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:48:25,235 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:48:25,235 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-19 07:48:25,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:25,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:25,237 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:25,246 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:48:25,246 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:48:25,246 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:48:25,246 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = 2*ULTIMATE.start_base2flt_~e#1 + 255 Supporting invariants [] [2023-11-19 07:48:25,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-19 07:48:25,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:25,270 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:48:25,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:25,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:25,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:48:25,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:25,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:25,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:48:25,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:25,358 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 07:48:25,359 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-19 07:48:25,359 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 45 states and 66 transitions. cyclomatic complexity: 27 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 07:48:25,387 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 45 states and 66 transitions. cyclomatic complexity: 27. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 89 states and 131 transitions. Complement of second has 5 states. [2023-11-19 07:48:25,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-11-19 07:48:25,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 07:48:25,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2023-11-19 07:48:25,388 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 78 transitions. Stem has 7 letters. Loop has 3 letters. [2023-11-19 07:48:25,389 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:48:25,389 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 78 transitions. Stem has 10 letters. Loop has 3 letters. [2023-11-19 07:48:25,389 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:48:25,389 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 78 transitions. Stem has 7 letters. Loop has 6 letters. [2023-11-19 07:48:25,390 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:48:25,390 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 89 states and 131 transitions. [2023-11-19 07:48:25,391 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2023-11-19 07:48:25,393 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 89 states to 81 states and 118 transitions. [2023-11-19 07:48:25,393 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 75 [2023-11-19 07:48:25,393 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 78 [2023-11-19 07:48:25,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 81 states and 118 transitions. [2023-11-19 07:48:25,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:48:25,394 INFO L218 hiAutomatonCegarLoop]: Abstraction has 81 states and 118 transitions. [2023-11-19 07:48:25,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states and 118 transitions. [2023-11-19 07:48:25,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 48. [2023-11-19 07:48:25,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 48 states have (on average 1.4583333333333333) internal successors, (70), 47 states have internal predecessors, (70), 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 07:48:25,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 70 transitions. [2023-11-19 07:48:25,397 INFO L240 hiAutomatonCegarLoop]: Abstraction has 48 states and 70 transitions. [2023-11-19 07:48:25,398 INFO L428 stractBuchiCegarLoop]: Abstraction has 48 states and 70 transitions. [2023-11-19 07:48:25,398 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-19 07:48:25,398 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 48 states and 70 transitions. [2023-11-19 07:48:25,399 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2023-11-19 07:48:25,399 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:48:25,399 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:48:25,399 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:25,399 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-19 07:48:25,400 INFO L748 eck$LassoCheckResult]: Stem: 825#$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(22, 2);call #Ultimate.allocInit(12, 3); 788#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~ret19#1, main_#t~ret20#1, main_#t~ret21#1, main_#t~ret22#1, main_#t~ret23#1, main_~a~0#1, main_~ma~2#1, main_~ea~2#1, main_~b~0#1, main_~mb~2#1, main_~eb~2#1, main_~r_mul~0#1, main_~zero~0#1, main_~one~0#1, main_~sb~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~tmp___1~0#1, main_~__retres16~0#1;havoc main_~a~0#1;havoc main_#t~nondet15#1;main_~ma~2#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_#t~nondet16#1;main_~ea~2#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~b~0#1;havoc main_#t~nondet17#1;main_~mb~2#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_#t~nondet18#1;main_~eb~2#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~r_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sb~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~tmp___1~0#1;havoc main_~__retres16~0#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 0, 0;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 789#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 822#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 815#base2flt_returnLabel#1 main_#t~ret19#1 := base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;havoc base2flt_#in~m#1, base2flt_#in~e#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret19#1;havoc main_#t~ret19#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 1, 0;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 816#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 796#L35-1 assume !(base2flt_~m#1 % 4294967296 < 16777216); 798#L57-5 [2023-11-19 07:48:25,400 INFO L750 eck$LassoCheckResult]: Loop: 798#L57-5 assume !false; 799#L58-1 assume base2flt_~m#1 % 4294967296 >= 33554432; 800#L59-1 assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 % 4294967296 / 2; 798#L57-5 [2023-11-19 07:48:25,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:25,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1807335841, now seen corresponding path program 1 times [2023-11-19 07:48:25,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:25,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307738630] [2023-11-19 07:48:25,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:25,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:25,471 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 07:48:25,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:25,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307738630] [2023-11-19 07:48:25,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307738630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:25,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:25,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:48:25,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434590822] [2023-11-19 07:48:25,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:25,472 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:48:25,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:25,473 INFO L85 PathProgramCache]: Analyzing trace with hash 160010, now seen corresponding path program 1 times [2023-11-19 07:48:25,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:25,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466539775] [2023-11-19 07:48:25,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:25,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:25,479 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:48:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:25,484 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:48:25,520 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:48:25,520 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:48:25,520 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:48:25,520 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:48:25,520 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:48:25,520 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:25,521 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:48:25,521 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:48:25,521 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration3_Loop [2023-11-19 07:48:25,521 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:48:25,521 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:48:25,522 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 07:48:25,528 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 07:48:25,626 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:48:25,626 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:48:25,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:25,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:25,630 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:25,637 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:48:25,637 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:48:25,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-19 07:48:25,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:25,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:25,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:25,684 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:25,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-19 07:48:25,693 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:48:25,693 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:48:25,740 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:48:25,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:25,749 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:48:25,750 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:48:25,750 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:48:25,750 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:48:25,750 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:48:25,750 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:25,750 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:48:25,750 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:48:25,750 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration3_Loop [2023-11-19 07:48:25,750 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:48:25,750 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:48:25,751 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 07:48:25,758 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 07:48:25,865 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:48:25,865 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:48:25,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:25,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:25,873 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:25,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-19 07:48:25,881 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 07:48:25,893 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:48:25,893 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:48:25,893 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:48:25,893 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:48:25,894 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:48:25,895 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:48:25,895 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:48:25,916 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:48:25,919 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:48:25,919 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-19 07:48:25,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:25,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:25,921 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:25,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-19 07:48:25,928 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:48:25,929 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:48:25,929 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:48:25,929 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = -2*ULTIMATE.start_base2flt_~e#1 + 253 Supporting invariants [] [2023-11-19 07:48:25,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2023-11-19 07:48:25,945 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:48:25,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:25,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:48:25,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:26,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:48:26,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:26,020 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 07:48:26,020 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 07:48:26,021 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 48 states and 70 transitions. cyclomatic complexity: 28 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 07:48:26,047 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 48 states and 70 transitions. cyclomatic complexity: 28. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 91 states and 134 transitions. Complement of second has 5 states. [2023-11-19 07:48:26,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-11-19 07:48:26,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 07:48:26,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2023-11-19 07:48:26,049 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 77 transitions. Stem has 7 letters. Loop has 3 letters. [2023-11-19 07:48:26,049 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:48:26,049 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 77 transitions. Stem has 10 letters. Loop has 3 letters. [2023-11-19 07:48:26,050 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:48:26,050 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 77 transitions. Stem has 7 letters. Loop has 6 letters. [2023-11-19 07:48:26,050 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:48:26,050 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 91 states and 134 transitions. [2023-11-19 07:48:26,052 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2023-11-19 07:48:26,053 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 91 states to 83 states and 121 transitions. [2023-11-19 07:48:26,053 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 76 [2023-11-19 07:48:26,054 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 77 [2023-11-19 07:48:26,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 83 states and 121 transitions. [2023-11-19 07:48:26,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:48:26,054 INFO L218 hiAutomatonCegarLoop]: Abstraction has 83 states and 121 transitions. [2023-11-19 07:48:26,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states and 121 transitions. [2023-11-19 07:48:26,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 51. [2023-11-19 07:48:26,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 51 states have (on average 1.4509803921568627) internal successors, (74), 50 states have internal predecessors, (74), 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 07:48:26,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 74 transitions. [2023-11-19 07:48:26,058 INFO L240 hiAutomatonCegarLoop]: Abstraction has 51 states and 74 transitions. [2023-11-19 07:48:26,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:26,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:48:26,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:26,060 INFO L87 Difference]: Start difference. First operand 51 states and 74 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:26,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:26,134 INFO L93 Difference]: Finished difference Result 49 states and 67 transitions. [2023-11-19 07:48:26,134 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 67 transitions. [2023-11-19 07:48:26,135 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2023-11-19 07:48:26,136 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 49 states and 67 transitions. [2023-11-19 07:48:26,136 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2023-11-19 07:48:26,137 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2023-11-19 07:48:26,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 67 transitions. [2023-11-19 07:48:26,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:48:26,137 INFO L218 hiAutomatonCegarLoop]: Abstraction has 49 states and 67 transitions. [2023-11-19 07:48:26,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 67 transitions. [2023-11-19 07:48:26,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2023-11-19 07:48:26,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 45 states have (on average 1.4) internal successors, (63), 44 states have internal predecessors, (63), 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 07:48:26,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 63 transitions. [2023-11-19 07:48:26,141 INFO L240 hiAutomatonCegarLoop]: Abstraction has 45 states and 63 transitions. [2023-11-19 07:48:26,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:26,142 INFO L428 stractBuchiCegarLoop]: Abstraction has 45 states and 63 transitions. [2023-11-19 07:48:26,142 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-19 07:48:26,142 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 45 states and 63 transitions. [2023-11-19 07:48:26,143 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2023-11-19 07:48:26,143 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:48:26,143 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:48:26,144 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:26,144 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-19 07:48:26,144 INFO L748 eck$LassoCheckResult]: Stem: 1109#$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(22, 2);call #Ultimate.allocInit(12, 3); 1075#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~ret19#1, main_#t~ret20#1, main_#t~ret21#1, main_#t~ret22#1, main_#t~ret23#1, main_~a~0#1, main_~ma~2#1, main_~ea~2#1, main_~b~0#1, main_~mb~2#1, main_~eb~2#1, main_~r_mul~0#1, main_~zero~0#1, main_~one~0#1, main_~sb~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~tmp___1~0#1, main_~__retres16~0#1;havoc main_~a~0#1;havoc main_#t~nondet15#1;main_~ma~2#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_#t~nondet16#1;main_~ea~2#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~b~0#1;havoc main_#t~nondet17#1;main_~mb~2#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_#t~nondet18#1;main_~eb~2#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~r_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sb~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~tmp___1~0#1;havoc main_~__retres16~0#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 0, 0;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1076#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1106#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 1099#base2flt_returnLabel#1 main_#t~ret19#1 := base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;havoc base2flt_#in~m#1, base2flt_#in~e#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret19#1;havoc main_#t~ret19#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 1, 0;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1100#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 1083#L35-1 assume base2flt_~m#1 % 4294967296 < 16777216; 1084#L47-3 assume !false; 1102#L38-1 assume base2flt_~e#1 <= -128;base2flt_~__retres4~0#1 := 0; 1072#L79-1 base2flt_#res#1 := base2flt_~__retres4~0#1; 1073#base2flt_returnLabel#2 main_#t~ret20#1 := base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;havoc base2flt_#in~m#1, base2flt_#in~e#1;assume { :end_inline_base2flt } true;main_~one~0#1 := main_#t~ret20#1;havoc main_#t~ret20#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := main_~ma~2#1, main_~ea~2#1;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1074#L29-2 assume !(0 == base2flt_~m#1 % 4294967296); 1094#L35-2 assume !(base2flt_~m#1 % 4294967296 < 16777216); 1095#L57-8 [2023-11-19 07:48:26,145 INFO L750 eck$LassoCheckResult]: Loop: 1095#L57-8 assume !false; 1088#L58-2 assume base2flt_~m#1 % 4294967296 >= 33554432; 1089#L59-2 assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 % 4294967296 / 2; 1095#L57-8 [2023-11-19 07:48:26,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:26,145 INFO L85 PathProgramCache]: Analyzing trace with hash 780922602, now seen corresponding path program 1 times [2023-11-19 07:48:26,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:26,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098353664] [2023-11-19 07:48:26,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:26,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:26,257 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 07:48:26,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:26,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098353664] [2023-11-19 07:48:26,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098353664] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:26,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:26,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:48:26,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666513491] [2023-11-19 07:48:26,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:26,259 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:48:26,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:26,260 INFO L85 PathProgramCache]: Analyzing trace with hash 245408, now seen corresponding path program 1 times [2023-11-19 07:48:26,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:26,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462602932] [2023-11-19 07:48:26,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:26,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:26,270 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:48:26,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:26,288 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:48:26,327 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:48:26,327 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:48:26,327 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:48:26,327 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:48:26,328 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:48:26,328 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:26,328 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:48:26,328 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:48:26,328 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration4_Loop [2023-11-19 07:48:26,328 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:48:26,328 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:48:26,330 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 07:48:26,336 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 07:48:26,433 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:48:26,434 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:48:26,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:26,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:26,436 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:26,443 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:48:26,443 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:48:26,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-19 07:48:26,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:26,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:26,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:26,488 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:26,501 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:48:26,501 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:48:26,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-19 07:48:26,564 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:48:26,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:26,574 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:48:26,574 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:48:26,574 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:48:26,574 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:48:26,574 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:48:26,574 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:26,574 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:48:26,574 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:48:26,575 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration4_Loop [2023-11-19 07:48:26,575 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:48:26,575 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:48:26,576 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 07:48:26,583 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 07:48:26,678 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:48:26,678 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:48:26,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:26,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:26,681 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:26,688 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 07:48:26,700 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:48:26,701 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:48:26,701 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:48:26,701 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:48:26,701 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:48:26,702 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:48:26,702 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:48:26,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-11-19 07:48:26,712 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:48:26,725 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:48:26,735 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-19 07:48:26,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:26,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:26,756 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:26,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:26,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:26,794 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:48:26,794 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:48:26,794 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:48:26,794 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = -2*ULTIMATE.start_base2flt_~e#1 + 253 Supporting invariants [] [2023-11-19 07:48:26,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-19 07:48:26,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:26,819 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:48:26,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:26,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:26,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:48:26,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:26,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:48:26,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:26,888 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 07:48:26,889 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 07:48:26,889 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 45 states and 63 transitions. cyclomatic complexity: 23 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 07:48:26,910 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 45 states and 63 transitions. cyclomatic complexity: 23. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 72 states and 101 transitions. Complement of second has 5 states. [2023-11-19 07:48:26,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-11-19 07:48:26,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 07:48:26,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2023-11-19 07:48:26,912 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 70 transitions. Stem has 13 letters. Loop has 3 letters. [2023-11-19 07:48:26,913 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:48:26,913 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 70 transitions. Stem has 16 letters. Loop has 3 letters. [2023-11-19 07:48:26,913 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:48:26,913 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 70 transitions. Stem has 13 letters. Loop has 6 letters. [2023-11-19 07:48:26,913 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:48:26,914 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 72 states and 101 transitions. [2023-11-19 07:48:26,915 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2023-11-19 07:48:26,916 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 72 states to 64 states and 88 transitions. [2023-11-19 07:48:26,916 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2023-11-19 07:48:26,916 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 58 [2023-11-19 07:48:26,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 88 transitions. [2023-11-19 07:48:26,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:48:26,917 INFO L218 hiAutomatonCegarLoop]: Abstraction has 64 states and 88 transitions. [2023-11-19 07:48:26,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states and 88 transitions. [2023-11-19 07:48:26,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 48. [2023-11-19 07:48:26,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 48 states have (on average 1.3958333333333333) internal successors, (67), 47 states have internal predecessors, (67), 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 07:48:26,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 67 transitions. [2023-11-19 07:48:26,920 INFO L240 hiAutomatonCegarLoop]: Abstraction has 48 states and 67 transitions. [2023-11-19 07:48:26,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:26,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:48:26,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:26,921 INFO L87 Difference]: Start difference. First operand 48 states and 67 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 07:48:26,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:26,953 INFO L93 Difference]: Finished difference Result 50 states and 68 transitions. [2023-11-19 07:48:26,953 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 68 transitions. [2023-11-19 07:48:26,954 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2023-11-19 07:48:26,954 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 49 states and 67 transitions. [2023-11-19 07:48:26,955 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2023-11-19 07:48:26,955 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2023-11-19 07:48:26,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 67 transitions. [2023-11-19 07:48:26,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:48:26,956 INFO L218 hiAutomatonCegarLoop]: Abstraction has 49 states and 67 transitions. [2023-11-19 07:48:26,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 67 transitions. [2023-11-19 07:48:26,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2023-11-19 07:48:26,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 48 states have (on average 1.375) internal successors, (66), 47 states have internal predecessors, (66), 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 07:48:26,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 66 transitions. [2023-11-19 07:48:26,959 INFO L240 hiAutomatonCegarLoop]: Abstraction has 48 states and 66 transitions. [2023-11-19 07:48:26,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:26,960 INFO L428 stractBuchiCegarLoop]: Abstraction has 48 states and 66 transitions. [2023-11-19 07:48:26,961 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-19 07:48:26,961 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 48 states and 66 transitions. [2023-11-19 07:48:26,962 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2023-11-19 07:48:26,962 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:48:26,962 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:48:26,963 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:26,963 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-19 07:48:26,963 INFO L748 eck$LassoCheckResult]: Stem: 1393#$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(22, 2);call #Ultimate.allocInit(12, 3); 1356#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~ret19#1, main_#t~ret20#1, main_#t~ret21#1, main_#t~ret22#1, main_#t~ret23#1, main_~a~0#1, main_~ma~2#1, main_~ea~2#1, main_~b~0#1, main_~mb~2#1, main_~eb~2#1, main_~r_mul~0#1, main_~zero~0#1, main_~one~0#1, main_~sb~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~tmp___1~0#1, main_~__retres16~0#1;havoc main_~a~0#1;havoc main_#t~nondet15#1;main_~ma~2#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_#t~nondet16#1;main_~ea~2#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~b~0#1;havoc main_#t~nondet17#1;main_~mb~2#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_#t~nondet18#1;main_~eb~2#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~r_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sb~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~tmp___1~0#1;havoc main_~__retres16~0#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 0, 0;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1357#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1389#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 1382#base2flt_returnLabel#1 main_#t~ret19#1 := base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;havoc base2flt_#in~m#1, base2flt_#in~e#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret19#1;havoc main_#t~ret19#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 1, 0;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1383#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 1364#L35-1 assume base2flt_~m#1 % 4294967296 < 16777216; 1365#L47-3 assume !false; 1386#L38-1 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * (base2flt_~m#1 % 4294967296); 1373#L47-2 assume base2flt_~m#1 % 4294967296 < 16777216; 1375#L47-3 assume !false; 1385#L38-1 assume base2flt_~e#1 <= -128;base2flt_~__retres4~0#1 := 0; 1353#L79-1 base2flt_#res#1 := base2flt_~__retres4~0#1; 1354#base2flt_returnLabel#2 main_#t~ret20#1 := base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;havoc base2flt_#in~m#1, base2flt_#in~e#1;assume { :end_inline_base2flt } true;main_~one~0#1 := main_#t~ret20#1;havoc main_#t~ret20#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := main_~ma~2#1, main_~ea~2#1;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1355#L29-2 assume !(0 == base2flt_~m#1 % 4294967296); 1377#L35-2 assume base2flt_~m#1 % 4294967296 < 16777216; 1379#L47-5 [2023-11-19 07:48:26,963 INFO L750 eck$LassoCheckResult]: Loop: 1379#L47-5 assume !false; 1384#L38-2 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * (base2flt_~m#1 % 4294967296); 1391#L47-4 assume base2flt_~m#1 % 4294967296 < 16777216; 1379#L47-5 [2023-11-19 07:48:26,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:26,964 INFO L85 PathProgramCache]: Analyzing trace with hash 136451054, now seen corresponding path program 1 times [2023-11-19 07:48:26,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:26,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041816223] [2023-11-19 07:48:26,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:26,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:26,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:27,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:27,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:27,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041816223] [2023-11-19 07:48:27,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041816223] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:48:27,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905331357] [2023-11-19 07:48:27,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:27,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:27,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:27,032 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:27,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-19 07:48:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:27,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:48:27,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:27,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:27,130 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:48:27,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:27,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905331357] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:48:27,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:48:27,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-19 07:48:27,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131341432] [2023-11-19 07:48:27,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:48:27,170 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:48:27,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:27,170 INFO L85 PathProgramCache]: Analyzing trace with hash 219649, now seen corresponding path program 1 times [2023-11-19 07:48:27,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:27,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205157313] [2023-11-19 07:48:27,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:27,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:27,176 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:48:27,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:27,185 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:48:27,220 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:48:27,220 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:48:27,220 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:48:27,220 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:48:27,220 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:48:27,220 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:27,221 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:48:27,221 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:48:27,221 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration5_Loop [2023-11-19 07:48:27,221 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:48:27,221 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:48:27,222 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 07:48:27,229 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 07:48:27,331 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:48:27,331 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:48:27,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:27,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:27,333 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:27,346 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:48:27,346 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:48:27,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-19 07:48:27,385 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:48:27,386 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m#1=0} Honda state: {ULTIMATE.start_base2flt_~m#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:48:27,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:27,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:27,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:27,396 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:27,403 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:48:27,403 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:48:27,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-19 07:48:27,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:27,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:27,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:27,461 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:27,465 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:48:27,465 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:48:27,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-19 07:48:27,520 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:48:27,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:27,527 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:48:27,527 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:48:27,527 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:48:27,527 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:48:27,527 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:48:27,527 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:27,527 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:48:27,527 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:48:27,527 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration5_Loop [2023-11-19 07:48:27,527 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:48:27,527 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:48:27,528 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 07:48:27,537 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 07:48:27,659 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:48:27,659 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:48:27,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:27,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:27,662 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:27,670 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 07:48:27,682 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:48:27,682 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:48:27,682 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:48:27,682 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:48:27,682 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:48:27,688 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:48:27,688 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:48:27,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-19 07:48:27,704 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:48:27,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:27,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:27,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:27,731 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:27,737 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 07:48:27,749 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:48:27,749 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:48:27,750 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:48:27,750 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:48:27,750 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:48:27,751 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:48:27,751 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:48:27,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-19 07:48:27,766 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:48:27,773 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:48:27,773 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-19 07:48:27,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:27,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:27,775 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:27,779 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:48:27,779 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:48:27,779 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:48:27,780 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = 2*ULTIMATE.start_base2flt_~e#1 + 255 Supporting invariants [] [2023-11-19 07:48:27,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-19 07:48:27,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:27,800 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:48:27,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:27,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:27,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:48:27,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:27,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:27,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:48:27,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:27,901 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 07:48:27,901 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-19 07:48:27,902 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 48 states and 66 transitions. cyclomatic complexity: 23 Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 07:48:27,924 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 48 states and 66 transitions. cyclomatic complexity: 23. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 76 states and 105 transitions. Complement of second has 5 states. [2023-11-19 07:48:27,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-11-19 07:48:27,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 07:48:27,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2023-11-19 07:48:27,926 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 71 transitions. Stem has 16 letters. Loop has 3 letters. [2023-11-19 07:48:27,927 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:48:27,927 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 71 transitions. Stem has 19 letters. Loop has 3 letters. [2023-11-19 07:48:27,927 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:48:27,928 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 71 transitions. Stem has 16 letters. Loop has 6 letters. [2023-11-19 07:48:27,928 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:48:27,928 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 76 states and 105 transitions. [2023-11-19 07:48:27,929 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2023-11-19 07:48:27,930 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 76 states to 68 states and 92 transitions. [2023-11-19 07:48:27,930 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 56 [2023-11-19 07:48:27,931 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 59 [2023-11-19 07:48:27,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 92 transitions. [2023-11-19 07:48:27,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:48:27,931 INFO L218 hiAutomatonCegarLoop]: Abstraction has 68 states and 92 transitions. [2023-11-19 07:48:27,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states and 92 transitions. [2023-11-19 07:48:27,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 51. [2023-11-19 07:48:27,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 51 states have (on average 1.3725490196078431) internal successors, (70), 50 states have internal predecessors, (70), 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 07:48:27,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 70 transitions. [2023-11-19 07:48:27,934 INFO L240 hiAutomatonCegarLoop]: Abstraction has 51 states and 70 transitions. [2023-11-19 07:48:27,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:27,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:48:27,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:48:27,935 INFO L87 Difference]: Start difference. First operand 51 states and 70 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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 07:48:28,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:28,041 INFO L93 Difference]: Finished difference Result 96 states and 130 transitions. [2023-11-19 07:48:28,041 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 96 states and 130 transitions. [2023-11-19 07:48:28,042 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2023-11-19 07:48:28,043 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 96 states to 90 states and 124 transitions. [2023-11-19 07:48:28,044 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 71 [2023-11-19 07:48:28,044 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 71 [2023-11-19 07:48:28,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 124 transitions. [2023-11-19 07:48:28,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:48:28,045 INFO L218 hiAutomatonCegarLoop]: Abstraction has 90 states and 124 transitions. [2023-11-19 07:48:28,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states and 124 transitions. [2023-11-19 07:48:28,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 59. [2023-11-19 07:48:28,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 59 states have (on average 1.3728813559322033) internal successors, (81), 58 states have internal predecessors, (81), 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 07:48:28,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 81 transitions. [2023-11-19 07:48:28,048 INFO L240 hiAutomatonCegarLoop]: Abstraction has 59 states and 81 transitions. [2023-11-19 07:48:28,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:48:28,049 INFO L428 stractBuchiCegarLoop]: Abstraction has 59 states and 81 transitions. [2023-11-19 07:48:28,049 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-19 07:48:28,049 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 59 states and 81 transitions. [2023-11-19 07:48:28,050 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2023-11-19 07:48:28,050 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:48:28,050 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:48:28,051 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:28,051 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-19 07:48:28,052 INFO L748 eck$LassoCheckResult]: Stem: 1838#$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(22, 2);call #Ultimate.allocInit(12, 3); 1797#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~ret19#1, main_#t~ret20#1, main_#t~ret21#1, main_#t~ret22#1, main_#t~ret23#1, main_~a~0#1, main_~ma~2#1, main_~ea~2#1, main_~b~0#1, main_~mb~2#1, main_~eb~2#1, main_~r_mul~0#1, main_~zero~0#1, main_~one~0#1, main_~sb~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~tmp___1~0#1, main_~__retres16~0#1;havoc main_~a~0#1;havoc main_#t~nondet15#1;main_~ma~2#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_#t~nondet16#1;main_~ea~2#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~b~0#1;havoc main_#t~nondet17#1;main_~mb~2#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_#t~nondet18#1;main_~eb~2#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~r_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sb~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~tmp___1~0#1;havoc main_~__retres16~0#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 0, 0;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1798#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1832#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 1822#base2flt_returnLabel#1 main_#t~ret19#1 := base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;havoc base2flt_#in~m#1, base2flt_#in~e#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret19#1;havoc main_#t~ret19#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 1, 0;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1823#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 1805#L35-1 assume base2flt_~m#1 % 4294967296 < 16777216; 1806#L47-3 assume !false; 1836#L38-1 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * (base2flt_~m#1 % 4294967296); 1842#L47-2 assume !(base2flt_~m#1 % 4294967296 < 16777216); 1816#$Ultimate##64 assume 0 == base2flt_~m#1 % 4294967296;base2flt_#t~nondet4#1 := 0; 1830#L76-7 base2flt_~m#1 := base2flt_#t~nondet4#1;havoc base2flt_#t~nondet4#1; 1820#L77-5 assume 0 == base2flt_~m#1 % 4294967296 || base2flt_~m#1 % 4294967296 == 16777216 * ((128 + base2flt_~e#1) % 4294967296) % 4294967296;base2flt_#t~nondet5#1 := 16777216 * ((128 + base2flt_~e#1) % 4294967296); 1793#L77-9 base2flt_~res~0#1 := base2flt_#t~nondet5#1;havoc base2flt_#t~nondet5#1;base2flt_~__retres4~0#1 := base2flt_~res~0#1; 1794#L79-1 base2flt_#res#1 := base2flt_~__retres4~0#1; 1795#base2flt_returnLabel#2 main_#t~ret20#1 := base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;havoc base2flt_#in~m#1, base2flt_#in~e#1;assume { :end_inline_base2flt } true;main_~one~0#1 := main_#t~ret20#1;havoc main_#t~ret20#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := main_~ma~2#1, main_~ea~2#1;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1796#L29-2 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1787#L79-2 base2flt_#res#1 := base2flt_~__retres4~0#1; 1788#base2flt_returnLabel#3 main_#t~ret21#1 := base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;havoc base2flt_#in~m#1, base2flt_#in~e#1;assume { :end_inline_base2flt } true;main_~a~0#1 := main_#t~ret21#1;havoc main_#t~ret21#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := main_~mb~2#1, main_~eb~2#1;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1835#L29-3 assume !(0 == base2flt_~m#1 % 4294967296); 1799#L35-3 assume !(base2flt_~m#1 % 4294967296 < 16777216); 1800#L57-11 [2023-11-19 07:48:28,052 INFO L750 eck$LassoCheckResult]: Loop: 1800#L57-11 assume !false; 1807#L58-3 assume base2flt_~m#1 % 4294967296 >= 33554432; 1808#L59-3 assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 % 4294967296 / 2; 1800#L57-11 [2023-11-19 07:48:28,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:28,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1276938091, now seen corresponding path program 1 times [2023-11-19 07:48:28,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:28,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420029205] [2023-11-19 07:48:28,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:28,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:28,105 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 07:48:28,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:28,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420029205] [2023-11-19 07:48:28,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420029205] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:28,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:28,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:48:28,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538162774] [2023-11-19 07:48:28,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:28,107 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:48:28,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:28,108 INFO L85 PathProgramCache]: Analyzing trace with hash 330806, now seen corresponding path program 1 times [2023-11-19 07:48:28,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:28,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826129616] [2023-11-19 07:48:28,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:28,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:28,112 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:48:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:28,116 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:48:28,147 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:48:28,147 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:48:28,148 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:48:28,148 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:48:28,148 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:48:28,148 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:28,148 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:48:28,148 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:48:28,148 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration6_Loop [2023-11-19 07:48:28,148 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:48:28,149 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:48:28,149 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 07:48:28,156 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 07:48:28,248 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:48:28,248 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:48:28,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:28,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:28,249 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:28,252 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:48:28,253 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:48:28,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-19 07:48:28,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:28,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:28,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:28,300 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:28,302 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:48:28,302 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:48:28,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-19 07:48:28,356 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:48:28,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:28,366 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:48:28,366 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:48:28,366 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:48:28,366 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:48:28,366 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:48:28,366 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:28,366 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:48:28,366 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:48:28,366 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration6_Loop [2023-11-19 07:48:28,367 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:48:28,367 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:48:28,368 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 07:48:28,375 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 07:48:28,456 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:48:28,457 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:48:28,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:28,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:28,461 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:28,466 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 07:48:28,478 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:48:28,478 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:48:28,479 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:48:28,479 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:48:28,479 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:48:28,481 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:48:28,481 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:48:28,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-19 07:48:28,496 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:48:28,509 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:48:28,509 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-19 07:48:28,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:28,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:28,511 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:28,513 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:48:28,513 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:48:28,513 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:48:28,513 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = -2*ULTIMATE.start_base2flt_~e#1 + 253 Supporting invariants [] [2023-11-19 07:48:28,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-19 07:48:28,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:28,537 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:48:28,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:28,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:28,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:48:28,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:28,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:48:28,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:28,613 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 07:48:28,614 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 07:48:28,614 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 59 states and 81 transitions. cyclomatic complexity: 27 Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 07:48:28,620 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 59 states and 81 transitions. cyclomatic complexity: 27. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 62 states and 85 transitions. Complement of second has 4 states. [2023-11-19 07:48:28,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-11-19 07:48:28,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 07:48:28,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2023-11-19 07:48:28,622 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 59 transitions. Stem has 21 letters. Loop has 3 letters. [2023-11-19 07:48:28,622 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:48:28,622 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 59 transitions. Stem has 24 letters. Loop has 3 letters. [2023-11-19 07:48:28,622 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:48:28,622 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 59 transitions. Stem has 21 letters. Loop has 6 letters. [2023-11-19 07:48:28,623 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:48:28,623 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 85 transitions. [2023-11-19 07:48:28,624 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-19 07:48:28,624 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 56 states and 77 transitions. [2023-11-19 07:48:28,624 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2023-11-19 07:48:28,625 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2023-11-19 07:48:28,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 77 transitions. [2023-11-19 07:48:28,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:48:28,625 INFO L218 hiAutomatonCegarLoop]: Abstraction has 56 states and 77 transitions. [2023-11-19 07:48:28,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 77 transitions. [2023-11-19 07:48:28,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-11-19 07:48:28,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 56 states have (on average 1.375) internal successors, (77), 55 states have internal predecessors, (77), 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 07:48:28,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2023-11-19 07:48:28,628 INFO L240 hiAutomatonCegarLoop]: Abstraction has 56 states and 77 transitions. [2023-11-19 07:48:28,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:28,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:48:28,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:28,629 INFO L87 Difference]: Start difference. First operand 56 states and 77 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 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 07:48:28,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:28,732 INFO L93 Difference]: Finished difference Result 63 states and 85 transitions. [2023-11-19 07:48:28,732 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 85 transitions. [2023-11-19 07:48:28,733 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-19 07:48:28,733 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 63 states and 85 transitions. [2023-11-19 07:48:28,733 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2023-11-19 07:48:28,734 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2023-11-19 07:48:28,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 85 transitions. [2023-11-19 07:48:28,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:48:28,734 INFO L218 hiAutomatonCegarLoop]: Abstraction has 63 states and 85 transitions. [2023-11-19 07:48:28,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states and 85 transitions. [2023-11-19 07:48:28,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 58. [2023-11-19 07:48:28,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 58 states have (on average 1.3620689655172413) internal successors, (79), 57 states have internal predecessors, (79), 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 07:48:28,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 79 transitions. [2023-11-19 07:48:28,741 INFO L240 hiAutomatonCegarLoop]: Abstraction has 58 states and 79 transitions. [2023-11-19 07:48:28,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:28,749 INFO L428 stractBuchiCegarLoop]: Abstraction has 58 states and 79 transitions. [2023-11-19 07:48:28,750 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-19 07:48:28,750 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 79 transitions. [2023-11-19 07:48:28,750 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-19 07:48:28,750 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:48:28,750 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:48:28,751 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:28,751 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-19 07:48:28,751 INFO L748 eck$LassoCheckResult]: Stem: 2163#$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(22, 2);call #Ultimate.allocInit(12, 3); 2126#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~ret19#1, main_#t~ret20#1, main_#t~ret21#1, main_#t~ret22#1, main_#t~ret23#1, main_~a~0#1, main_~ma~2#1, main_~ea~2#1, main_~b~0#1, main_~mb~2#1, main_~eb~2#1, main_~r_mul~0#1, main_~zero~0#1, main_~one~0#1, main_~sb~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~tmp___1~0#1, main_~__retres16~0#1;havoc main_~a~0#1;havoc main_#t~nondet15#1;main_~ma~2#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_#t~nondet16#1;main_~ea~2#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~b~0#1;havoc main_#t~nondet17#1;main_~mb~2#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_#t~nondet18#1;main_~eb~2#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~r_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sb~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~tmp___1~0#1;havoc main_~__retres16~0#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 0, 0;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 2127#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 2157#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 2148#base2flt_returnLabel#1 main_#t~ret19#1 := base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;havoc base2flt_#in~m#1, base2flt_#in~e#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret19#1;havoc main_#t~ret19#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 1, 0;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 2149#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 2133#L35-1 assume base2flt_~m#1 % 4294967296 < 16777216; 2134#L47-3 assume !false; 2155#L38-1 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * (base2flt_~m#1 % 4294967296); 2140#L47-2 assume !(base2flt_~m#1 % 4294967296 < 16777216); 2142#$Ultimate##64 assume !(0 == base2flt_~m#1 % 4294967296); 2156#L76-5 assume !(4278190079 == base2flt_~m#1 % 4294967296);assume base2flt_#t~nondet4#1 % 4294967296 <= base2flt_~m#1 % 4294967296;assume base2flt_#t~nondet4#1 % 4294967296 <= 4278190079; 2158#L76-7 base2flt_~m#1 := base2flt_#t~nondet4#1;havoc base2flt_#t~nondet4#1; 2146#L77-5 assume 0 == base2flt_~m#1 % 4294967296 || base2flt_~m#1 % 4294967296 == 16777216 * ((128 + base2flt_~e#1) % 4294967296) % 4294967296;base2flt_#t~nondet5#1 := 16777216 * ((128 + base2flt_~e#1) % 4294967296); 2122#L77-9 base2flt_~res~0#1 := base2flt_#t~nondet5#1;havoc base2flt_#t~nondet5#1;base2flt_~__retres4~0#1 := base2flt_~res~0#1; 2123#L79-1 base2flt_#res#1 := base2flt_~__retres4~0#1; 2124#base2flt_returnLabel#2 main_#t~ret20#1 := base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;havoc base2flt_#in~m#1, base2flt_#in~e#1;assume { :end_inline_base2flt } true;main_~one~0#1 := main_#t~ret20#1;havoc main_#t~ret20#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := main_~ma~2#1, main_~ea~2#1;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 2125#L29-2 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 2116#L79-2 base2flt_#res#1 := base2flt_~__retres4~0#1; 2117#base2flt_returnLabel#3 main_#t~ret21#1 := base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;havoc base2flt_#in~m#1, base2flt_#in~e#1;assume { :end_inline_base2flt } true;main_~a~0#1 := main_#t~ret21#1;havoc main_#t~ret21#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := main_~mb~2#1, main_~eb~2#1;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 2161#L29-3 assume !(0 == base2flt_~m#1 % 4294967296); 2128#L35-3 assume base2flt_~m#1 % 4294967296 < 16777216; 2129#L47-7 [2023-11-19 07:48:28,752 INFO L750 eck$LassoCheckResult]: Loop: 2129#L47-7 assume !false; 2120#L38-3 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * (base2flt_~m#1 % 4294967296); 2121#L47-6 assume base2flt_~m#1 % 4294967296 < 16777216; 2129#L47-7 [2023-11-19 07:48:28,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:28,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1472036089, now seen corresponding path program 1 times [2023-11-19 07:48:28,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:28,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816484271] [2023-11-19 07:48:28,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:28,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:28,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:28,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:28,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:28,895 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 07:48:28,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:28,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816484271] [2023-11-19 07:48:28,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816484271] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:28,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:28,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:48:28,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267401202] [2023-11-19 07:48:28,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:28,897 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:48:28,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:28,897 INFO L85 PathProgramCache]: Analyzing trace with hash 305047, now seen corresponding path program 1 times [2023-11-19 07:48:28,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:28,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869789605] [2023-11-19 07:48:28,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:28,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:28,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:28,901 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:48:28,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:28,903 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:48:28,934 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:48:28,934 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:48:28,934 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:48:28,934 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:48:28,934 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:48:28,934 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:28,934 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:48:28,934 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:48:28,934 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration7_Loop [2023-11-19 07:48:28,934 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:48:28,935 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:48:28,935 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 07:48:28,941 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 07:48:29,050 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:48:29,051 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:48:29,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:29,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:29,052 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:29,055 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:48:29,055 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:48:29,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-19 07:48:29,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:29,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:29,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:29,096 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:29,098 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:48:29,098 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:48:29,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2023-11-19 07:48:29,156 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:48:29,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:29,165 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:48:29,165 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:48:29,165 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:48:29,165 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:48:29,165 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:48:29,165 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:29,166 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:48:29,166 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:48:29,166 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration7_Loop [2023-11-19 07:48:29,166 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:48:29,166 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:48:29,167 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 07:48:29,172 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 07:48:29,273 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:48:29,273 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:48:29,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:29,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:29,285 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:29,288 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 07:48:29,300 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:48:29,300 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:48:29,300 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:48:29,300 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:48:29,300 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:48:29,303 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:48:29,303 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:48:29,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-11-19 07:48:29,320 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:48:29,323 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:48:29,323 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-19 07:48:29,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:29,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:29,324 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:29,326 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:48:29,326 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:48:29,326 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:48:29,326 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = 2*ULTIMATE.start_base2flt_~e#1 + 255 Supporting invariants [] [2023-11-19 07:48:29,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2023-11-19 07:48:29,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:29,350 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:48:29,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:29,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:29,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:48:29,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:29,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:48:29,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:29,440 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 07:48:29,441 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-19 07:48:29,441 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 79 transitions. cyclomatic complexity: 25 Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:29,447 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 79 transitions. cyclomatic complexity: 25. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 62 states and 83 transitions. Complement of second has 4 states. [2023-11-19 07:48:29,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-11-19 07:48:29,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:29,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2023-11-19 07:48:29,448 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 55 transitions. Stem has 22 letters. Loop has 3 letters. [2023-11-19 07:48:29,449 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:48:29,449 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 55 transitions. Stem has 25 letters. Loop has 3 letters. [2023-11-19 07:48:29,449 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:48:29,449 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 55 transitions. Stem has 22 letters. Loop has 6 letters. [2023-11-19 07:48:29,450 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:48:29,450 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 83 transitions. [2023-11-19 07:48:29,451 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-19 07:48:29,451 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 0 states and 0 transitions. [2023-11-19 07:48:29,451 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-19 07:48:29,451 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-19 07:48:29,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-19 07:48:29,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:29,451 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:48:29,451 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:48:29,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:29,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:48:29,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:48:29,452 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:29,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:29,453 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2023-11-19 07:48:29,453 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2023-11-19 07:48:29,453 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-19 07:48:29,453 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 07:48:29,453 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-19 07:48:29,453 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-19 07:48:29,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-19 07:48:29,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:29,454 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:48:29,454 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:48:29,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:48:29,454 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:48:29,455 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-11-19 07:48:29,455 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-19 07:48:29,455 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-19 07:48:29,455 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-19 07:48:29,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 07:48:29 BoogieIcfgContainer [2023-11-19 07:48:29,464 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-19 07:48:29,464 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:48:29,464 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:48:29,465 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:48:29,465 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:22" (3/4) ... [2023-11-19 07:48:29,467 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 07:48:29,468 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:48:29,469 INFO L158 Benchmark]: Toolchain (without parser) took 7990.72ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 109.6MB in the beginning and 105.7MB in the end (delta: 3.9MB). Peak memory consumption was 37.0MB. Max. memory is 16.1GB. [2023-11-19 07:48:29,469 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 115.3MB. Free memory is still 65.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:48:29,469 INFO L158 Benchmark]: CACSL2BoogieTranslator took 404.95ms. Allocated memory is still 155.2MB. Free memory was 109.0MB in the beginning and 95.8MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 07:48:29,470 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.95ms. Allocated memory is still 155.2MB. Free memory was 95.8MB in the beginning and 93.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:48:29,470 INFO L158 Benchmark]: Boogie Preprocessor took 63.67ms. Allocated memory is still 155.2MB. Free memory was 93.3MB in the beginning and 91.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:48:29,470 INFO L158 Benchmark]: RCFGBuilder took 831.41ms. Allocated memory is still 155.2MB. Free memory was 91.2MB in the beginning and 123.3MB in the end (delta: -32.0MB). Peak memory consumption was 29.9MB. Max. memory is 16.1GB. [2023-11-19 07:48:29,471 INFO L158 Benchmark]: BuchiAutomizer took 6627.41ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 122.2MB in the beginning and 105.7MB in the end (delta: 16.6MB). Peak memory consumption was 49.0MB. Max. memory is 16.1GB. [2023-11-19 07:48:29,471 INFO L158 Benchmark]: Witness Printer took 3.55ms. Allocated memory is still 186.6MB. Free memory is still 105.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:48:29,473 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 115.3MB. Free memory is still 65.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 404.95ms. Allocated memory is still 155.2MB. Free memory was 109.0MB in the beginning and 95.8MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.95ms. Allocated memory is still 155.2MB. Free memory was 95.8MB in the beginning and 93.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.67ms. Allocated memory is still 155.2MB. Free memory was 93.3MB in the beginning and 91.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 831.41ms. Allocated memory is still 155.2MB. Free memory was 91.2MB in the beginning and 123.3MB in the end (delta: -32.0MB). Peak memory consumption was 29.9MB. Max. memory is 16.1GB. * BuchiAutomizer took 6627.41ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 122.2MB in the beginning and 105.7MB in the end (delta: 16.6MB). Peak memory consumption was 49.0MB. Max. memory is 16.1GB. * Witness Printer took 3.55ms. Allocated memory is still 186.6MB. Free memory is still 105.7MB. 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 13 terminating modules (6 trivial, 7 deterministic, 0 nondeterministic). One deterministic module has affine ranking function ((-2 * e) + 253) and consists of 4 locations. One deterministic module has affine ranking function ((2 * e) + 255) and consists of 3 locations. One deterministic module has affine ranking function ((-2 * e) + 253) and consists of 3 locations. One deterministic module has affine ranking function ((-2 * e) + 253) and consists of 3 locations. One deterministic module has affine ranking function ((2 * e) + 255) and consists of 3 locations. One deterministic module has affine ranking function ((-2 * e) + 253) and consists of 3 locations. One deterministic module has affine ranking function ((2 * e) + 255) and consists of 3 locations. 6 modules have a trivial ranking function, the largest among these consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.5s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 4.9s. Construction of modules took 0.3s. Büchi inclusion checks took 1.0s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 10. Automata minimization 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 155 StatesRemovedByMinimization, 9 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 [7, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 647 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 640 mSDsluCounter, 1084 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 248 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 291 IncrementalHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 836 mSDtfsCounter, 291 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT6 lasso0 LassoPreprocessingBenchmarks: Lassos: inital22 mio100 ax100 hnf100 lsp61 ukn100 mio100 lsp100 div612 bol100 ite100 ukn100 eq132 hnf96 smp41 dnf100 smp100 tf104 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 92ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.9s 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 07:48:29,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:29,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:29,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b942b3-a0b2-4117-8dec-323468ddb11d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE