./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/neural-networks/elu_2_safe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/neural-networks/elu_2_safe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7ac858ebbd8bca202c7c51b1584dbd1a80ae03321948e4e4062b9804fe2c638e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:14:43,523 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:14:43,624 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:14:43,640 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:14:43,649 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:14:43,714 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:14:43,715 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:14:43,716 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:14:43,717 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:14:43,725 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:14:43,726 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:14:43,727 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:14:43,728 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:14:43,730 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:14:43,730 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:14:43,731 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:14:43,731 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:14:43,732 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:14:43,733 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:14:43,733 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:14:43,734 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:14:43,734 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:14:43,736 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:14:43,736 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:14:43,737 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:14:43,737 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:14:43,738 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:14:43,738 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:14:43,739 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:14:43,739 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:14:43,741 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:14:43,741 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:14:43,761 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:14:43,763 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:14:43,763 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:14:43,764 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:14:43,764 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:14:43,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:14:43,765 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:14:43,766 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:14:43,766 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:14:43,766 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:14:43,767 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:14:43,767 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:14:43,767 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:14:43,768 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:14:43,768 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:14:43,768 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ac858ebbd8bca202c7c51b1584dbd1a80ae03321948e4e4062b9804fe2c638e [2023-11-23 21:14:44,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:14:44,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:14:44,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:14:44,162 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:14:44,163 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:14:44,164 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/neural-networks/elu_2_safe.c-amalgamation.i [2023-11-23 21:14:47,363 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:14:47,755 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:14:47,755 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/sv-benchmarks/c/neural-networks/elu_2_safe.c-amalgamation.i [2023-11-23 21:14:47,786 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/data/d7ba9337f/4dc92e9ea1f04095b02ca205c0245e7c/FLAGe9b0cc994 [2023-11-23 21:14:47,804 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/data/d7ba9337f/4dc92e9ea1f04095b02ca205c0245e7c [2023-11-23 21:14:47,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:14:47,813 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:14:47,817 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:14:47,817 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:14:47,823 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:14:47,827 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:14:47" (1/1) ... [2023-11-23 21:14:47,828 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7620f00a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:47, skipping insertion in model container [2023-11-23 21:14:47,829 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:14:47" (1/1) ... [2023-11-23 21:14:47,916 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:14:48,157 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 21:14:48,682 WARN L635 FunctionHandler]: implicit declaration of function __builtin_isnan [2023-11-23 21:14:48,684 WARN L1590 CHandler]: Possible shadowing of function y1 [2023-11-23 21:14:48,685 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/sv-benchmarks/c/neural-networks/elu_2_safe.c-amalgamation.i[63118,63131] [2023-11-23 21:14:48,690 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:14:48,700 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:14:48,720 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 21:14:48,747 WARN L635 FunctionHandler]: implicit declaration of function __builtin_isnan [2023-11-23 21:14:48,749 WARN L1590 CHandler]: Possible shadowing of function y1 [2023-11-23 21:14:48,749 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/sv-benchmarks/c/neural-networks/elu_2_safe.c-amalgamation.i[63118,63131] [2023-11-23 21:14:48,750 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:14:48,878 WARN L675 CHandler]: The function __builtin_isnan is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:48,879 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:48,888 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:14:48,888 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:48 WrapperNode [2023-11-23 21:14:48,888 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:14:48,890 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:14:48,890 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:14:48,890 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:14:48,899 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:48" (1/1) ... [2023-11-23 21:14:48,925 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:48" (1/1) ... [2023-11-23 21:14:48,953 INFO L138 Inliner]: procedures = 560, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 35 [2023-11-23 21:14:48,954 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:14:48,954 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:14:48,955 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:14:48,955 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:14:48,965 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:48" (1/1) ... [2023-11-23 21:14:48,965 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:48" (1/1) ... [2023-11-23 21:14:48,968 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:48" (1/1) ... [2023-11-23 21:14:48,969 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:48" (1/1) ... [2023-11-23 21:14:48,974 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:48" (1/1) ... [2023-11-23 21:14:48,976 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:48" (1/1) ... [2023-11-23 21:14:48,977 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:48" (1/1) ... [2023-11-23 21:14:48,978 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:48" (1/1) ... [2023-11-23 21:14:48,981 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:14:48,982 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:14:48,982 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:14:48,982 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:14:48,983 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:48" (1/1) ... [2023-11-23 21:14:48,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:14:49,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:14:49,020 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:14:49,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:14:49,137 INFO L130 BoogieDeclarations]: Found specification of procedure elu [2023-11-23 21:14:49,138 INFO L138 BoogieDeclarations]: Found implementation of procedure elu [2023-11-23 21:14:49,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:14:49,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:14:49,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:14:49,139 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_isnan [2023-11-23 21:14:49,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:14:49,249 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:14:49,251 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:14:49,365 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:14:49,417 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:14:49,418 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:14:49,420 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:14:49 BoogieIcfgContainer [2023-11-23 21:14:49,420 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:14:49,423 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:14:49,424 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:14:49,427 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:14:49,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:14:47" (1/3) ... [2023-11-23 21:14:49,428 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ac34ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:14:49, skipping insertion in model container [2023-11-23 21:14:49,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:48" (2/3) ... [2023-11-23 21:14:49,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ac34ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:14:49, skipping insertion in model container [2023-11-23 21:14:49,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:14:49" (3/3) ... [2023-11-23 21:14:49,432 INFO L112 eAbstractionObserver]: Analyzing ICFG elu_2_safe.c-amalgamation.i [2023-11-23 21:14:49,453 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:14:49,453 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:14:49,506 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:14:49,514 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3357988c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:14:49,514 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:14:49,519 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:14:49,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 21:14:49,528 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:14:49,529 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:14:49,529 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:14:49,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:14:49,535 INFO L85 PathProgramCache]: Analyzing trace with hash 2089036942, now seen corresponding path program 1 times [2023-11-23 21:14:49,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:14:49,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634190123] [2023-11-23 21:14:49,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:49,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:14:49,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:14:49,702 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:14:49,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:14:49,777 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:14:49,780 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:14:49,782 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:14:49,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:14:49,795 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:14:49,802 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:14:49,836 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret91 could not be translated [2023-11-23 21:14:49,838 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret92 could not be translated [2023-11-23 21:14:49,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:14:49 BoogieIcfgContainer [2023-11-23 21:14:49,847 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:14:49,847 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:14:49,848 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:14:49,848 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:14:49,849 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:14:49" (3/4) ... [2023-11-23 21:14:49,851 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:14:49,852 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:14:49,854 INFO L158 Benchmark]: Toolchain (without parser) took 2040.31ms. Allocated memory is still 165.7MB. Free memory was 136.2MB in the beginning and 111.2MB in the end (delta: 25.0MB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB. [2023-11-23 21:14:49,855 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 125.8MB. Free memory was 99.2MB in the beginning and 99.1MB in the end (delta: 132.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:14:49,856 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1072.14ms. Allocated memory is still 165.7MB. Free memory was 135.4MB in the beginning and 78.9MB in the end (delta: 56.6MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2023-11-23 21:14:49,856 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.13ms. Allocated memory is still 165.7MB. Free memory was 78.9MB in the beginning and 76.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:14:49,857 INFO L158 Benchmark]: Boogie Preprocessor took 26.46ms. Allocated memory is still 165.7MB. Free memory was 76.3MB in the beginning and 75.5MB in the end (delta: 809.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:14:49,858 INFO L158 Benchmark]: RCFGBuilder took 438.62ms. Allocated memory is still 165.7MB. Free memory was 75.5MB in the beginning and 126.9MB in the end (delta: -51.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 21:14:49,859 INFO L158 Benchmark]: TraceAbstraction took 423.49ms. Allocated memory is still 165.7MB. Free memory was 125.9MB in the beginning and 112.3MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 21:14:49,860 INFO L158 Benchmark]: Witness Printer took 5.29ms. Allocated memory is still 165.7MB. Free memory is still 111.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:14:49,864 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 125.8MB. Free memory was 99.2MB in the beginning and 99.1MB in the end (delta: 132.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1072.14ms. Allocated memory is still 165.7MB. Free memory was 135.4MB in the beginning and 78.9MB in the end (delta: 56.6MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.13ms. Allocated memory is still 165.7MB. Free memory was 78.9MB in the beginning and 76.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.46ms. Allocated memory is still 165.7MB. Free memory was 76.3MB in the beginning and 75.5MB in the end (delta: 809.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 438.62ms. Allocated memory is still 165.7MB. Free memory was 75.5MB in the beginning and 126.9MB in the end (delta: -51.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * TraceAbstraction took 423.49ms. Allocated memory is still 165.7MB. Free memory was 125.9MB in the beginning and 112.3MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 5.29ms. Allocated memory is still 165.7MB. Free memory is still 111.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret91 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret92 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 859]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 859, overapproximation of someBinaryArithmeticFLOAToperation at line 855. Possible FailurePath: [L854] float x1 = __VERIFIER_nondet_float(); [L855] float x2 = x1 + 1e-5f; [L856] COND FALSE !(!(!__builtin_isnan (x1))) [L857] CALL, EXPR elu(x1) VAL [\old(x)=116] [L847] COND TRUE x >= 0.0f [L848] return x; [L857] RET, EXPR elu(x1) VAL [x1=116] [L857] float y1 = elu(x1); [L858] CALL, EXPR elu(x2) VAL [\old(x)=117] [L847] COND FALSE !(x >= 0.0f) [L850] return expm1f(x); [L858] RET, EXPR elu(x2) VAL [x1=116, x2=117, y1=116] [L858] float y2 = elu(x2); [L859] COND TRUE !(__builtin_islessequal(y1, y2)) VAL [x1=116, x2=117, y1=116, y2=117] [L859] reach_error() VAL [x1=116, x2=117, y1=116, y2=117] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 21:14:49,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/neural-networks/elu_2_safe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7ac858ebbd8bca202c7c51b1584dbd1a80ae03321948e4e4062b9804fe2c638e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:14:52,879 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:14:53,025 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-23 21:14:53,035 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:14:53,036 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:14:53,085 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:14:53,086 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:14:53,087 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:14:53,088 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:14:53,093 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:14:53,094 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:14:53,095 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:14:53,095 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:14:53,097 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:14:53,098 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:14:53,098 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:14:53,100 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:14:53,100 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:14:53,101 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:14:53,102 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:14:53,103 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:14:53,103 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:14:53,104 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:14:53,104 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:14:53,105 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:14:53,105 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:14:53,106 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:14:53,106 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:14:53,107 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:14:53,107 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:14:53,109 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:14:53,109 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:14:53,109 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:14:53,110 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:14:53,110 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:14:53,111 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:14:53,111 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:14:53,111 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:14:53,112 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:14:53,113 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:14:53,113 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:14:53,114 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:14:53,114 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:14:53,114 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:14:53,115 INFO L153 SettingsManager]: * Logic for external solver=AUFBV 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_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ac858ebbd8bca202c7c51b1584dbd1a80ae03321948e4e4062b9804fe2c638e [2023-11-23 21:14:53,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:14:53,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:14:53,571 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:14:53,572 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:14:53,573 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:14:53,575 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/neural-networks/elu_2_safe.c-amalgamation.i [2023-11-23 21:14:56,977 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:14:57,452 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:14:57,453 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/sv-benchmarks/c/neural-networks/elu_2_safe.c-amalgamation.i [2023-11-23 21:14:57,492 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/data/05712b082/34bc65c68ab94777b798ceeaf5c22615/FLAG7c901c7f6 [2023-11-23 21:14:57,515 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/data/05712b082/34bc65c68ab94777b798ceeaf5c22615 [2023-11-23 21:14:57,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:14:57,524 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:14:57,530 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:14:57,531 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:14:57,537 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:14:57,538 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:14:57" (1/1) ... [2023-11-23 21:14:57,540 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11d75a66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:57, skipping insertion in model container [2023-11-23 21:14:57,540 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:14:57" (1/1) ... [2023-11-23 21:14:57,637 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:14:57,935 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 21:14:58,621 WARN L635 FunctionHandler]: implicit declaration of function __builtin_isnan [2023-11-23 21:14:58,623 WARN L1590 CHandler]: Possible shadowing of function y1 [2023-11-23 21:14:58,625 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/sv-benchmarks/c/neural-networks/elu_2_safe.c-amalgamation.i[63118,63131] [2023-11-23 21:14:58,631 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:14:58,652 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:14:58,679 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 21:14:58,734 WARN L635 FunctionHandler]: implicit declaration of function __builtin_isnan [2023-11-23 21:14:58,736 WARN L1590 CHandler]: Possible shadowing of function y1 [2023-11-23 21:14:58,737 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/sv-benchmarks/c/neural-networks/elu_2_safe.c-amalgamation.i[63118,63131] [2023-11-23 21:14:58,739 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:14:58,900 WARN L675 CHandler]: The function __builtin_isnan is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:58,900 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:58,908 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:14:58,909 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:58 WrapperNode [2023-11-23 21:14:58,909 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:14:58,910 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:14:58,911 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:14:58,911 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:14:58,919 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:58" (1/1) ... [2023-11-23 21:14:58,967 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:58" (1/1) ... [2023-11-23 21:14:58,998 INFO L138 Inliner]: procedures = 561, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 35 [2023-11-23 21:14:58,999 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:14:59,000 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:14:59,001 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:14:59,001 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:14:59,012 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:58" (1/1) ... [2023-11-23 21:14:59,013 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:58" (1/1) ... [2023-11-23 21:14:59,017 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:58" (1/1) ... [2023-11-23 21:14:59,018 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:58" (1/1) ... [2023-11-23 21:14:59,027 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:58" (1/1) ... [2023-11-23 21:14:59,029 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:58" (1/1) ... [2023-11-23 21:14:59,032 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:58" (1/1) ... [2023-11-23 21:14:59,034 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:58" (1/1) ... [2023-11-23 21:14:59,039 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:14:59,040 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:14:59,040 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:14:59,041 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:14:59,042 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:58" (1/1) ... [2023-11-23 21:14:59,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:14:59,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:14:59,094 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:14:59,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:14:59,152 INFO L130 BoogieDeclarations]: Found specification of procedure elu [2023-11-23 21:14:59,153 INFO L138 BoogieDeclarations]: Found implementation of procedure elu [2023-11-23 21:14:59,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:14:59,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:14:59,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:14:59,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:14:59,154 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_isnan [2023-11-23 21:14:59,328 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:14:59,330 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:14:59,579 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:14:59,617 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:14:59,617 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:14:59,618 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:14:59 BoogieIcfgContainer [2023-11-23 21:14:59,618 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:14:59,621 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:14:59,622 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:14:59,626 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:14:59,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:14:57" (1/3) ... [2023-11-23 21:14:59,627 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25becdd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:14:59, skipping insertion in model container [2023-11-23 21:14:59,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:58" (2/3) ... [2023-11-23 21:14:59,628 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25becdd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:14:59, skipping insertion in model container [2023-11-23 21:14:59,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:14:59" (3/3) ... [2023-11-23 21:14:59,630 INFO L112 eAbstractionObserver]: Analyzing ICFG elu_2_safe.c-amalgamation.i [2023-11-23 21:14:59,654 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:14:59,654 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:14:59,715 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:14:59,723 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4c7029c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:14:59,724 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:14:59,729 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:14:59,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-23 21:14:59,739 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:14:59,740 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:14:59,741 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:14:59,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:14:59,748 INFO L85 PathProgramCache]: Analyzing trace with hash -341737810, now seen corresponding path program 1 times [2023-11-23 21:14:59,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:14:59,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614055512] [2023-11-23 21:14:59,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:59,765 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:14:59,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:14:59,769 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:14:59,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-23 21:14:59,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:59,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:14:59,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:14:59,968 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 21:14:59,969 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:14:59,970 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:14:59,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614055512] [2023-11-23 21:14:59,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [614055512] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:14:59,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:14:59,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:14:59,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44502079] [2023-11-23 21:14:59,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:14:59,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:14:59,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:15:00,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:15:00,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:15:00,042 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:15:00,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:00,152 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2023-11-23 21:15:00,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:15:00,155 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2023-11-23 21:15:00,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:00,162 INFO L225 Difference]: With dead ends: 28 [2023-11-23 21:15:00,163 INFO L226 Difference]: Without dead ends: 13 [2023-11-23 21:15:00,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:15:00,170 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:00,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:15:00,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-11-23 21:15:00,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-11-23 21:15:00,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:15:00,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2023-11-23 21:15:00,217 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 16 [2023-11-23 21:15:00,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:00,217 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2023-11-23 21:15:00,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:15:00,218 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2023-11-23 21:15:00,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-23 21:15:00,219 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:00,220 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:15:00,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:15:00,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:15:00,424 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:15:00,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:00,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1621601488, now seen corresponding path program 1 times [2023-11-23 21:15:00,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:15:00,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796072518] [2023-11-23 21:15:00,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:00,431 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:15:00,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:15:00,435 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:15:00,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-23 21:15:00,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:00,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-23 21:15:00,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:05,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 21:15:05,761 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:15:05,761 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:15:05,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1796072518] [2023-11-23 21:15:05,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1796072518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:05,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:05,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 21:15:05,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223747900] [2023-11-23 21:15:05,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:05,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:15:05,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:15:05,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:15:05,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:15:05,765 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:15:25,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:25,207 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2023-11-23 21:15:25,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:15:25,216 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.125) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2023-11-23 21:15:25,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:25,218 INFO L225 Difference]: With dead ends: 25 [2023-11-23 21:15:25,218 INFO L226 Difference]: Without dead ends: 21 [2023-11-23 21:15:25,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-23 21:15:25,221 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 14 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:25,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 50 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-23 21:15:25,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-11-23 21:15:25,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2023-11-23 21:15:25,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 12 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-23 21:15:25,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2023-11-23 21:15:25,231 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 16 [2023-11-23 21:15:25,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:25,232 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2023-11-23 21:15:25,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.125) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:15:25,233 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2023-11-23 21:15:25,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-23 21:15:25,234 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:25,234 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:15:25,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-23 21:15:25,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:15:25,437 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:15:25,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:25,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1592972337, now seen corresponding path program 1 times [2023-11-23 21:15:25,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:15:25,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1195401437] [2023-11-23 21:15:25,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:25,440 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:15:25,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:15:25,441 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:15:25,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-23 21:15:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:25,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 21:15:25,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:27,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:15:27,353 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:15:28,403 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:15:28,403 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:15:28,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1195401437] [2023-11-23 21:15:28,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1195401437] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:15:28,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [566625800] [2023-11-23 21:15:28,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:28,405 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:15:28,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:15:28,411 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:15:28,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-11-23 21:15:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:28,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 21:15:28,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:29,297 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:15:29,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:15:29,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:15:29,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [566625800] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:15:29,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797140993] [2023-11-23 21:15:29,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:29,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:15:29,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:15:29,880 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:15:29,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 21:15:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:30,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 21:15:30,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:30,773 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:15:30,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:15:30,946 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:15:30,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797140993] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:15:30,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-23 21:15:30,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7, 8, 7, 8] total 11 [2023-11-23 21:15:30,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574288625] [2023-11-23 21:15:30,947 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-23 21:15:30,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 21:15:30,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:15:30,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 21:15:30,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:15:30,950 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 states have internal predecessors, (18), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 21:15:37,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:37,500 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2023-11-23 21:15:37,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:15:37,504 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 states have internal predecessors, (18), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 16 [2023-11-23 21:15:37,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:37,505 INFO L225 Difference]: With dead ends: 29 [2023-11-23 21:15:37,506 INFO L226 Difference]: Without dead ends: 19 [2023-11-23 21:15:37,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-11-23 21:15:37,508 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 20 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:37,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 57 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-23 21:15:37,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-11-23 21:15:37,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2023-11-23 21:15:37,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 11 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:15:37,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2023-11-23 21:15:37,514 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 16 [2023-11-23 21:15:37,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:37,515 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2023-11-23 21:15:37,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 states have internal predecessors, (18), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 21:15:37,516 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2023-11-23 21:15:37,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-23 21:15:37,517 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:37,517 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:15:37,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 21:15:37,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:15:37,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:15:38,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt [2023-11-23 21:15:38,126 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:15:38,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:38,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1492518769, now seen corresponding path program 2 times [2023-11-23 21:15:38,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:15:38,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2145545395] [2023-11-23 21:15:38,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 21:15:38,134 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:15:38,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:15:38,161 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:15:38,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-23 21:15:38,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 21:15:38,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-11-23 21:15:38,315 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:15:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:15:38,383 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-11-23 21:15:38,383 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:15:38,384 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:15:38,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-23 21:15:38,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:15:38,590 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-11-23 21:15:38,593 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:15:38,608 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret91 could not be translated [2023-11-23 21:15:38,610 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret92 could not be translated [2023-11-23 21:15:38,620 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:15:38 BoogieIcfgContainer [2023-11-23 21:15:38,620 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:15:38,621 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:15:38,621 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:15:38,621 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:15:38,621 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:14:59" (3/4) ... [2023-11-23 21:15:38,623 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:15:38,623 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:15:38,624 INFO L158 Benchmark]: Toolchain (without parser) took 41100.02ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 71.9MB in the beginning and 55.1MB in the end (delta: 16.8MB). Peak memory consumption was 39.7MB. Max. memory is 16.1GB. [2023-11-23 21:15:38,625 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 67.1MB. Free memory is still 43.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:15:38,625 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1379.38ms. Allocated memory is still 98.6MB. Free memory was 71.9MB in the beginning and 70.1MB in the end (delta: 1.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2023-11-23 21:15:38,626 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.10ms. Allocated memory is still 98.6MB. Free memory was 70.1MB in the beginning and 67.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:15:38,626 INFO L158 Benchmark]: Boogie Preprocessor took 38.88ms. Allocated memory is still 98.6MB. Free memory was 67.4MB in the beginning and 65.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:15:38,627 INFO L158 Benchmark]: RCFGBuilder took 578.60ms. Allocated memory is still 98.6MB. Free memory was 65.9MB in the beginning and 54.8MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 21:15:38,627 INFO L158 Benchmark]: TraceAbstraction took 38998.85ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 54.4MB in the beginning and 55.1MB in the end (delta: -741.6kB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2023-11-23 21:15:38,627 INFO L158 Benchmark]: Witness Printer took 2.95ms. Allocated memory is still 119.5MB. Free memory is still 55.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:15:38,630 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 67.1MB. Free memory is still 43.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1379.38ms. Allocated memory is still 98.6MB. Free memory was 71.9MB in the beginning and 70.1MB in the end (delta: 1.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.10ms. Allocated memory is still 98.6MB. Free memory was 70.1MB in the beginning and 67.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.88ms. Allocated memory is still 98.6MB. Free memory was 67.4MB in the beginning and 65.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 578.60ms. Allocated memory is still 98.6MB. Free memory was 65.9MB in the beginning and 54.8MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 38998.85ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 54.4MB in the beginning and 55.1MB in the end (delta: -741.6kB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. * Witness Printer took 2.95ms. Allocated memory is still 119.5MB. Free memory is still 55.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret91 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret92 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 859]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of expm1f at line 850. Possible FailurePath: [L854] float x1 = __VERIFIER_nondet_float(); [L855] float x2 = x1 + 1e-5f; [L856] COND FALSE !(!(!__builtin_isnan (x1))) [L857] CALL, EXPR elu(x1) VAL [\old(x)=-0.00000046325658331625164] [L847] COND FALSE !(x >= 0.0f) [L850] return expm1f(x); [L857] RET, EXPR elu(x1) VAL [x1=-0.00000046325658331625164, x2=0.0000095367431640625] [L857] float y1 = elu(x1); [L858] CALL, EXPR elu(x2) VAL [\old(x)=0.0000095367431640625] [L847] COND TRUE x >= 0.0f [L848] return x; VAL [\old(x)=0.0000095367431640625, \result=0.0000095367431640625, x=0.0000095367431640625] [L858] RET, EXPR elu(x2) VAL [x1=-0.00000046325658331625164, x2=0.0000095367431640625, y1=2.0] [L858] float y2 = elu(x2); [L859] COND TRUE !(__builtin_islessequal(y1, y2)) VAL [x1=-0.00000046325658331625164, x2=0.0000095367431640625, y1=2.0, y2=0.0000095367431640625] [L859] reach_error() VAL [x1=-0.00000046325658331625164, x2=0.0000095367431640625, y1=2.0, y2=0.0000095367431640625] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 38.9s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 26.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 42 SdHoareTripleChecker+Valid, 6.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 121 SdHoareTripleChecker+Invalid, 5.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 89 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 127 IncrementalHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 32 mSDtfsCounter, 127 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 26.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=2, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 10.1s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 120 ConstructedInterpolants, 6 QuantifiedInterpolants, 488 SizeOfPredicates, 22 NumberOfNonLiveVariables, 200 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 17/32 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 21:15:38,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42cb734-52cb-404e-8056-f68af5f2eef0/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample