./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0490a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0490a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ --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 00450c2a22750cd5421841873b924792a96c2bad91f10ba20116646568f64e1c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:53:20,009 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:53:20,126 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 04:53:20,140 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:53:20,141 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:53:20,180 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:53:20,181 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:53:20,182 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:53:20,183 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:53:20,188 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:53:20,188 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:53:20,189 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:53:20,189 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:53:20,191 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:53:20,191 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:53:20,192 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:53:20,192 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:53:20,193 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:53:20,193 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:53:20,193 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:53:20,194 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:53:20,194 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:53:20,196 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:53:20,196 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:53:20,197 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:53:20,197 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:53:20,197 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:53:20,198 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:53:20,198 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:53:20,199 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:53:20,200 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:53:20,200 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:53:20,200 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:53:20,201 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:53:20,201 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:53:20,201 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:53:20,202 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:53:20,202 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:53:20,202 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:53:20,202 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:53:20,203 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:53:20,203 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:53:20,203 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:53:20,203 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:53:20,204 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:53:20,204 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_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00450c2a22750cd5421841873b924792a96c2bad91f10ba20116646568f64e1c [2023-11-19 04:53:20,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:53:20,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:53:20,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:53:20,562 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:53:20,562 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:53:20,565 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/float-newlib/float_req_bl_0490a.c [2023-11-19 04:53:24,129 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:53:24,417 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:53:24,417 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/sv-benchmarks/c/float-newlib/float_req_bl_0490a.c [2023-11-19 04:53:24,428 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/data/e5aea62fa/883370fa9db946b9a6f76ef137a7e528/FLAGf39b2f236 [2023-11-19 04:53:24,445 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/data/e5aea62fa/883370fa9db946b9a6f76ef137a7e528 [2023-11-19 04:53:24,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:53:24,451 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:53:24,452 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:53:24,453 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:53:24,459 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:53:24,460 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:53:24" (1/1) ... [2023-11-19 04:53:24,461 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63b287ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:24, skipping insertion in model container [2023-11-19 04:53:24,462 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:53:24" (1/1) ... [2023-11-19 04:53:24,496 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:53:24,786 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_9f1a6d85-2dbc-4b51-9b91-8706368ae223/sv-benchmarks/c/float-newlib/float_req_bl_0490a.c[4369,4382] [2023-11-19 04:53:24,801 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:53:24,823 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:53:24,874 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_9f1a6d85-2dbc-4b51-9b91-8706368ae223/sv-benchmarks/c/float-newlib/float_req_bl_0490a.c[4369,4382] [2023-11-19 04:53:24,875 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:53:24,895 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:53:24,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:24 WrapperNode [2023-11-19 04:53:24,896 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:53:24,897 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:53:24,898 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:53:24,898 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:53:24,912 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:24" (1/1) ... [2023-11-19 04:53:24,926 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:24" (1/1) ... [2023-11-19 04:53:24,966 INFO L138 Inliner]: procedures = 18, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 134 [2023-11-19 04:53:24,966 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:53:24,967 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:53:24,967 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:53:24,968 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:53:24,979 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:24" (1/1) ... [2023-11-19 04:53:24,979 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:24" (1/1) ... [2023-11-19 04:53:24,985 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:24" (1/1) ... [2023-11-19 04:53:24,985 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:24" (1/1) ... [2023-11-19 04:53:24,999 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:24" (1/1) ... [2023-11-19 04:53:25,006 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:24" (1/1) ... [2023-11-19 04:53:25,009 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:24" (1/1) ... [2023-11-19 04:53:25,011 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:24" (1/1) ... [2023-11-19 04:53:25,016 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:53:25,021 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:53:25,023 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:53:25,024 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:53:25,025 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:24" (1/1) ... [2023-11-19 04:53:25,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:53:25,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:53:25,063 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:53:25,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:53:25,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:53:25,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:53:25,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:53:25,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-19 04:53:25,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:53:25,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-19 04:53:25,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:53:25,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:53:25,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:53:25,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:53:25,096 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2023-11-19 04:53:25,096 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2023-11-19 04:53:25,201 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:53:25,204 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:53:25,533 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:53:25,705 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:53:25,705 INFO L302 CfgBuilder]: Removed 12 assume(true) statements. [2023-11-19 04:53:25,710 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:53:25 BoogieIcfgContainer [2023-11-19 04:53:25,710 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:53:25,713 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:53:25,713 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:53:25,717 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:53:25,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:53:24" (1/3) ... [2023-11-19 04:53:25,718 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b254c5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:53:25, skipping insertion in model container [2023-11-19 04:53:25,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:24" (2/3) ... [2023-11-19 04:53:25,719 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b254c5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:53:25, skipping insertion in model container [2023-11-19 04:53:25,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:53:25" (3/3) ... [2023-11-19 04:53:25,725 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0490a.c [2023-11-19 04:53:25,742 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:53:25,742 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:53:25,795 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:53:25,803 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;@6b7e4966, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:53:25,803 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:53:25,808 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 36 states have (on average 1.6388888888888888) internal successors, (59), 37 states have internal predecessors, (59), 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) [2023-11-19 04:53:25,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:53:25,815 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:53:25,815 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:53:25,816 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:53:25,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:53:25,822 INFO L85 PathProgramCache]: Analyzing trace with hash 705608667, now seen corresponding path program 1 times [2023-11-19 04:53:25,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:53:25,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022667960] [2023-11-19 04:53:25,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:53:25,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:53:25,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:53:26,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:53:26,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:53:26,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022667960] [2023-11-19 04:53:26,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022667960] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:53:26,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:53:26,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:53:26,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089396] [2023-11-19 04:53:26,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:53:26,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 04:53:26,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:53:26,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 04:53:26,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:53:26,066 INFO L87 Difference]: Start difference. First operand has 41 states, 36 states have (on average 1.6388888888888888) internal successors, (59), 37 states have internal predecessors, (59), 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 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:53:26,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:53:26,122 INFO L93 Difference]: Finished difference Result 81 states and 127 transitions. [2023-11-19 04:53:26,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 04:53:26,130 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 04:53:26,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:53:26,139 INFO L225 Difference]: With dead ends: 81 [2023-11-19 04:53:26,140 INFO L226 Difference]: Without dead ends: 39 [2023-11-19 04:53:26,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:53:26,161 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:53:26,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:53:26,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-19 04:53:26,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-11-19 04:53:26,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 35 states have internal predecessors, (45), 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) [2023-11-19 04:53:26,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2023-11-19 04:53:26,216 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 7 [2023-11-19 04:53:26,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:53:26,218 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2023-11-19 04:53:26,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:53:26,219 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2023-11-19 04:53:26,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 04:53:26,220 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:53:26,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:53:26,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:53:26,221 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:53:26,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:53:26,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1856279284, now seen corresponding path program 1 times [2023-11-19 04:53:26,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:53:26,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768540801] [2023-11-19 04:53:26,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:53:26,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:53:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:53:26,319 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:53:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:53:26,375 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 04:53:26,376 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 04:53:26,378 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 04:53:26,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:53:26,383 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 04:53:26,387 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:53:26,414 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:53:26 BoogieIcfgContainer [2023-11-19 04:53:26,414 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:53:26,415 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:53:26,415 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:53:26,416 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:53:26,416 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:53:25" (3/4) ... [2023-11-19 04:53:26,418 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 04:53:26,420 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:53:26,421 INFO L158 Benchmark]: Toolchain (without parser) took 1970.03ms. Allocated memory was 144.7MB in the beginning and 182.5MB in the end (delta: 37.7MB). Free memory was 98.8MB in the beginning and 116.9MB in the end (delta: -18.1MB). Peak memory consumption was 21.2MB. Max. memory is 16.1GB. [2023-11-19 04:53:26,421 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 104.9MB. Free memory is still 58.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:53:26,422 INFO L158 Benchmark]: CACSL2BoogieTranslator took 444.21ms. Allocated memory is still 144.7MB. Free memory was 98.8MB in the beginning and 85.1MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 04:53:26,423 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.99ms. Allocated memory is still 144.7MB. Free memory was 85.1MB in the beginning and 83.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:53:26,423 INFO L158 Benchmark]: Boogie Preprocessor took 48.87ms. Allocated memory is still 144.7MB. Free memory was 83.6MB in the beginning and 81.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:53:26,429 INFO L158 Benchmark]: RCFGBuilder took 689.72ms. Allocated memory was 144.7MB in the beginning and 182.5MB in the end (delta: 37.7MB). Free memory was 81.5MB in the beginning and 147.3MB in the end (delta: -65.8MB). Peak memory consumption was 29.6MB. Max. memory is 16.1GB. [2023-11-19 04:53:26,430 INFO L158 Benchmark]: TraceAbstraction took 701.17ms. Allocated memory is still 182.5MB. Free memory was 147.3MB in the beginning and 118.0MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-19 04:53:26,431 INFO L158 Benchmark]: Witness Printer took 4.86ms. Allocated memory is still 182.5MB. Free memory was 118.0MB in the beginning and 116.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:53:26,434 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 104.9MB. Free memory is still 58.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 444.21ms. Allocated memory is still 144.7MB. Free memory was 98.8MB in the beginning and 85.1MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.99ms. Allocated memory is still 144.7MB. Free memory was 85.1MB in the beginning and 83.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.87ms. Allocated memory is still 144.7MB. Free memory was 83.6MB in the beginning and 81.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 689.72ms. Allocated memory was 144.7MB in the beginning and 182.5MB in the end (delta: 37.7MB). Free memory was 81.5MB in the beginning and 147.3MB in the end (delta: -65.8MB). Peak memory consumption was 29.6MB. Max. memory is 16.1GB. * TraceAbstraction took 701.17ms. Allocated memory is still 182.5MB. Free memory was 147.3MB in the beginning and 118.0MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 4.86ms. Allocated memory is still 182.5MB. Free memory was 118.0MB in the beginning and 116.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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: 175]: 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 15, overapproximation of someUnaryDOUBLEoperation at line 89, overapproximation of someBinaryArithmeticFLOAToperation at line 108. Possible FailurePath: [L17] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L86-L93] static const float one_acos = 1.0000000000e+00, pi = 3.1415925026e+00, pio2_hi_acos = 1.5707962513e+00, pio2_lo_acos = 7.5497894159e-08, pS0_acos = 1.6666667163e-01, pS1_acos = -3.2556581497e-01, pS2_acos = 2.0121252537e-01, pS3_acos = -4.0055535734e-02, pS4_acos = 7.9153501429e-04, pS5_acos = 3.4793309169e-05, qS1_acos = -2.4033949375e+00, qS2_acos = 2.0209457874e+00, qS3_acos = -6.8828397989e-01, qS4_acos = 7.7038154006e-02; [L170] float x = 1.0f / 0.0f; [L171] CALL, EXPR __ieee754_acosf(x) [L96] float z, p, q, r, w, s, c, df; [L97] __int32_t hx, ix; VAL [\old(x)=1065353217, one_acos=1, one_sqrt=1, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, pi=15707962513/10000000000, pi=15707962513/5000000000, pi=75497894159/1000000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1065353217] [L99] ieee_float_shape_type gf_u; [L100] EXPR gf_u.value = (x) [L101] EXPR gf_u.word [L101] EXPR (hx) = gf_u.word [L98-L102] { ieee_float_shape_type gf_u; gf_u.value = (x); (hx) = gf_u.word; } VAL [\old(x)=1065353217, hx=-1082130432, one_acos=1, one_sqrt=1, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, pi=15707962513/10000000000, pi=15707962513/5000000000, pi=75497894159/1000000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1065353217] [L103] ix = hx & 0x7fffffff VAL [\old(x)=1065353217, hx=-1082130432, ix=1065353216, one_acos=1, one_sqrt=1, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, pi=15707962513/10000000000, pi=15707962513/5000000000, pi=75497894159/1000000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1065353217] [L104] COND TRUE ix == 0x3f800000 [L105] COND FALSE !(hx > 0) [L108] return pi + (float)2.0 * pio2_lo_acos; VAL [\old(x)=1065353217, \result=0, hx=-1082130432, ix=1065353216, one_acos=1, one_sqrt=1, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, pi=15707962513/10000000000, pi=15707962513/5000000000, pi=75497894159/1000000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1065353217] [L171] RET, EXPR __ieee754_acosf(x) [L171] float res = __ieee754_acosf(x); [L174] CALL, EXPR isnan_float(res) [L15] return x != x; [L174] RET, EXPR isnan_float(res) [L174] COND TRUE !isnan_float(res) [L175] reach_error() VAL [one_acos=1, one_sqrt=1, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, pi=15707962513/10000000000, pi=15707962513/5000000000, pi=75497894159/1000000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, res=0, tiny_sqrt=1/1000000000000000000000000000000, x=1065353217] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 41 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10 IncrementalHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 41 mSDtfsCounter, 10 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2023-11-19 04:53:26,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0490a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ --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 00450c2a22750cd5421841873b924792a96c2bad91f10ba20116646568f64e1c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:53:29,104 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:53:29,229 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-19 04:53:29,238 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:53:29,239 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:53:29,284 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:53:29,284 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:53:29,285 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:53:29,286 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:53:29,291 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:53:29,291 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:53:29,292 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:53:29,292 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:53:29,294 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:53:29,294 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:53:29,294 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:53:29,296 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:53:29,296 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:53:29,296 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:53:29,297 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:53:29,298 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:53:29,298 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:53:29,299 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:53:29,299 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:53:29,299 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:53:29,300 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:53:29,300 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:53:29,301 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:53:29,301 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:53:29,301 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:53:29,303 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:53:29,303 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 04:53:29,303 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:53:29,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:53:29,304 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:53:29,304 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:53:29,304 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:53:29,304 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:53:29,305 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:53:29,305 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:53:29,306 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:53:29,306 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:53:29,306 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_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00450c2a22750cd5421841873b924792a96c2bad91f10ba20116646568f64e1c [2023-11-19 04:53:29,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:53:29,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:53:29,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:53:29,787 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:53:29,788 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:53:29,789 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/float-newlib/float_req_bl_0490a.c [2023-11-19 04:53:33,090 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:53:33,393 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:53:33,393 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/sv-benchmarks/c/float-newlib/float_req_bl_0490a.c [2023-11-19 04:53:33,406 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/data/2d860a058/870f000aac5e4dbab6bd25d25544cd1a/FLAG6dfac288a [2023-11-19 04:53:33,422 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/data/2d860a058/870f000aac5e4dbab6bd25d25544cd1a [2023-11-19 04:53:33,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:53:33,427 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:53:33,428 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:53:33,428 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:53:33,434 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:53:33,435 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:53:33" (1/1) ... [2023-11-19 04:53:33,436 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cc8a174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:33, skipping insertion in model container [2023-11-19 04:53:33,436 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:53:33" (1/1) ... [2023-11-19 04:53:33,467 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:53:33,684 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_9f1a6d85-2dbc-4b51-9b91-8706368ae223/sv-benchmarks/c/float-newlib/float_req_bl_0490a.c[4369,4382] [2023-11-19 04:53:33,688 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:53:33,704 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:53:33,749 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_9f1a6d85-2dbc-4b51-9b91-8706368ae223/sv-benchmarks/c/float-newlib/float_req_bl_0490a.c[4369,4382] [2023-11-19 04:53:33,750 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:53:33,771 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:53:33,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:33 WrapperNode [2023-11-19 04:53:33,772 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:53:33,773 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:53:33,774 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:53:33,774 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:53:33,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:33" (1/1) ... [2023-11-19 04:53:33,816 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:33" (1/1) ... [2023-11-19 04:53:33,880 INFO L138 Inliner]: procedures = 21, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 134 [2023-11-19 04:53:33,881 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:53:33,882 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:53:33,882 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:53:33,882 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:53:33,901 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:33" (1/1) ... [2023-11-19 04:53:33,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:33" (1/1) ... [2023-11-19 04:53:33,907 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:33" (1/1) ... [2023-11-19 04:53:33,908 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:33" (1/1) ... [2023-11-19 04:53:33,950 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:33" (1/1) ... [2023-11-19 04:53:33,957 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:33" (1/1) ... [2023-11-19 04:53:33,967 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:33" (1/1) ... [2023-11-19 04:53:33,970 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:33" (1/1) ... [2023-11-19 04:53:33,975 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:53:33,989 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:53:33,989 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:53:33,989 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:53:33,990 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:33" (1/1) ... [2023-11-19 04:53:33,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:53:34,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:53:34,023 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:53:34,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:53:34,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:53:34,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:53:34,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:53:34,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2023-11-19 04:53:34,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 04:53:34,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:53:34,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:53:34,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2023-11-19 04:53:34,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 04:53:34,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:53:34,078 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2023-11-19 04:53:34,078 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2023-11-19 04:53:34,221 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:53:34,226 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:53:45,500 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:53:45,509 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:53:45,509 INFO L302 CfgBuilder]: Removed 12 assume(true) statements. [2023-11-19 04:53:45,515 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:53:45 BoogieIcfgContainer [2023-11-19 04:53:45,515 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:53:45,520 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:53:45,521 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:53:45,525 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:53:45,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:53:33" (1/3) ... [2023-11-19 04:53:45,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e6e61b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:53:45, skipping insertion in model container [2023-11-19 04:53:45,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:33" (2/3) ... [2023-11-19 04:53:45,527 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e6e61b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:53:45, skipping insertion in model container [2023-11-19 04:53:45,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:53:45" (3/3) ... [2023-11-19 04:53:45,531 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0490a.c [2023-11-19 04:53:45,554 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:53:45,554 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:53:45,617 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:53:45,625 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;@18be7032, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:53:45,625 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:53:45,629 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 49 states have (on average 1.6326530612244898) internal successors, (80), 50 states have internal predecessors, (80), 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) [2023-11-19 04:53:45,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 04:53:45,637 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:53:45,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:53:45,639 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:53:45,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:53:45,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1029487755, now seen corresponding path program 1 times [2023-11-19 04:53:45,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:53:45,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166780484] [2023-11-19 04:53:45,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:53:45,671 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 [2023-11-19 04:53:45,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:53:45,675 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 04:53:45,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:53:46,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:53:46,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 04:53:46,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:53:46,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:53:46,340 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:53:46,341 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:53:46,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166780484] [2023-11-19 04:53:46,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1166780484] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:53:46,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:53:46,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:53:46,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917014198] [2023-11-19 04:53:46,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:53:46,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 04:53:46,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:53:46,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 04:53:46,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:53:46,391 INFO L87 Difference]: Start difference. First operand has 54 states, 49 states have (on average 1.6326530612244898) internal successors, (80), 50 states have internal predecessors, (80), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:53:46,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:53:46,426 INFO L93 Difference]: Finished difference Result 106 states and 168 transitions. [2023-11-19 04:53:46,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 04:53:46,429 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-19 04:53:46,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:53:46,439 INFO L225 Difference]: With dead ends: 106 [2023-11-19 04:53:46,439 INFO L226 Difference]: Without dead ends: 51 [2023-11-19 04:53:46,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:53:46,449 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:53:46,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:53:46,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-19 04:53:46,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-11-19 04:53:46,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 47 states have internal predecessors, (64), 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) [2023-11-19 04:53:46,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 68 transitions. [2023-11-19 04:53:46,516 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 68 transitions. Word has length 10 [2023-11-19 04:53:46,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:53:46,517 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 68 transitions. [2023-11-19 04:53:46,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:53:46,519 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 68 transitions. [2023-11-19 04:53:46,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 04:53:46,520 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:53:46,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:53:46,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:53:46,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:53:46,742 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:53:46,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:53:46,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1305819442, now seen corresponding path program 1 times [2023-11-19 04:53:46,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:53:46,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075801193] [2023-11-19 04:53:46,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:53:46,745 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 [2023-11-19 04:53:46,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:53:46,747 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 04:53:46,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:53:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:53:47,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 04:53:47,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:53:47,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:53:47,981 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:53:47,981 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:53:47,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2075801193] [2023-11-19 04:53:47,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2075801193] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:53:47,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:53:47,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 04:53:47,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352407701] [2023-11-19 04:53:47,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:53:47,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:53:47,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:53:47,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:53:47,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:53:47,986 INFO L87 Difference]: Start difference. First operand 51 states and 68 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:53:48,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:53:48,726 INFO L93 Difference]: Finished difference Result 56 states and 72 transitions. [2023-11-19 04:53:48,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:53:48,727 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-19 04:53:48,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:53:48,728 INFO L225 Difference]: With dead ends: 56 [2023-11-19 04:53:48,729 INFO L226 Difference]: Without dead ends: 12 [2023-11-19 04:53:48,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:53:48,731 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 10 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:53:48,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 20 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 04:53:48,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-19 04:53:48,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-11-19 04:53:48,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0) internal successors, (11), 11 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:53:48,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2023-11-19 04:53:48,737 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 11 [2023-11-19 04:53:48,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:53:48,737 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2023-11-19 04:53:48,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:53:48,738 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2023-11-19 04:53:48,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 04:53:48,738 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:53:48,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:53:48,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/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)] Forceful destruction successful, exit code 0 [2023-11-19 04:53:48,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:53:48,939 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:53:48,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:53:48,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1098950738, now seen corresponding path program 1 times [2023-11-19 04:53:48,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:53:48,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472667324] [2023-11-19 04:53:48,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:53:48,942 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 [2023-11-19 04:53:48,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:53:48,965 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 04:53:48,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:53:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:53:49,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 04:53:49,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:53:50,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:53:50,874 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:53:50,875 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:53:50,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472667324] [2023-11-19 04:53:50,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [472667324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:53:50,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:53:50,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 04:53:50,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815646699] [2023-11-19 04:53:50,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:53:50,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 04:53:50,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:53:50,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 04:53:50,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:53:50,878 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:53:52,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:53:52,521 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2023-11-19 04:53:52,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 04:53:52,522 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-19 04:53:52,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:53:52,523 INFO L225 Difference]: With dead ends: 12 [2023-11-19 04:53:52,523 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 04:53:52,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-19 04:53:52,525 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 7 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:53:52,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 16 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 04:53:52,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 04:53:52,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 04:53:52,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:53:52,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 04:53:52,528 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2023-11-19 04:53:52,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:53:52,529 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 04:53:52,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:53:52,529 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 04:53:52,529 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 04:53:52,533 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 04:53:52,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:53:52,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:53:52,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 04:53:53,030 INFO L899 garLoopResultBuilder]: For program point __ieee754_acosf_returnLabel#1(lines 95 162) no Hoare annotation was computed. [2023-11-19 04:53:53,031 INFO L895 garLoopResultBuilder]: At program point L139(line 139) the Hoare annotation is: false [2023-11-19 04:53:53,031 INFO L899 garLoopResultBuilder]: For program point L139-1(line 139) no Hoare annotation was computed. [2023-11-19 04:53:53,031 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 164 180) no Hoare annotation was computed. [2023-11-19 04:53:53,032 INFO L899 garLoopResultBuilder]: For program point L98-1(lines 98 102) no Hoare annotation was computed. [2023-11-19 04:53:53,032 INFO L895 garLoopResultBuilder]: At program point L98-2(lines 98 102) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start___ieee754_acosf_~x#1| (fp.div currentRoundingMode ((_ to_fp 8 24) currentRoundingMode 1.0) (_ +zero 8 24)))) (= currentRoundingMode roundNearestTiesToEven)) [2023-11-19 04:53:53,032 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-11-19 04:53:53,033 INFO L899 garLoopResultBuilder]: For program point L98-3(lines 98 102) no Hoare annotation was computed. [2023-11-19 04:53:53,033 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-11-19 04:53:53,033 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 175) no Hoare annotation was computed. [2023-11-19 04:53:53,034 INFO L899 garLoopResultBuilder]: For program point isnan_float_returnLabel#1(line 15) no Hoare annotation was computed. [2023-11-19 04:53:53,034 INFO L895 garLoopResultBuilder]: At program point L132(line 132) the Hoare annotation is: false [2023-11-19 04:53:53,034 INFO L899 garLoopResultBuilder]: For program point L132-1(line 132) no Hoare annotation was computed. [2023-11-19 04:53:53,035 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 04:53:53,035 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 161) no Hoare annotation was computed. [2023-11-19 04:53:53,035 INFO L899 garLoopResultBuilder]: For program point L112(lines 112 161) no Hoare annotation was computed. [2023-11-19 04:53:53,035 INFO L899 garLoopResultBuilder]: For program point L174(lines 174 177) no Hoare annotation was computed. [2023-11-19 04:53:53,036 INFO L899 garLoopResultBuilder]: For program point L141-1(lines 141 145) no Hoare annotation was computed. [2023-11-19 04:53:53,036 INFO L895 garLoopResultBuilder]: At program point L141-2(lines 141 145) the Hoare annotation is: false [2023-11-19 04:53:53,036 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 04:53:53,037 INFO L899 garLoopResultBuilder]: For program point L104(lines 104 111) no Hoare annotation was computed. [2023-11-19 04:53:53,037 INFO L899 garLoopResultBuilder]: For program point L146(lines 146 150) no Hoare annotation was computed. [2023-11-19 04:53:53,037 INFO L899 garLoopResultBuilder]: For program point L113(lines 113 114) no Hoare annotation was computed. [2023-11-19 04:53:53,037 INFO L895 garLoopResultBuilder]: At program point L146-1(lines 146 150) the Hoare annotation is: false [2023-11-19 04:53:53,038 INFO L899 garLoopResultBuilder]: For program point L146-2(lines 146 150) no Hoare annotation was computed. [2023-11-19 04:53:53,038 INFO L899 garLoopResultBuilder]: For program point L175(line 175) no Hoare annotation was computed. [2023-11-19 04:53:53,038 INFO L899 garLoopResultBuilder]: For program point L109(lines 109 111) no Hoare annotation was computed. [2023-11-19 04:53:53,039 INFO L899 garLoopResultBuilder]: For program point L105(lines 105 108) no Hoare annotation was computed. [2023-11-19 04:53:53,039 INFO L899 garLoopResultBuilder]: For program point L31(lines 31 32) no Hoare annotation was computed. [2023-11-19 04:53:53,039 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 44) no Hoare annotation was computed. [2023-11-19 04:53:53,039 INFO L899 garLoopResultBuilder]: For program point L40-2(lines 40 44) no Hoare annotation was computed. [2023-11-19 04:53:53,040 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2023-11-19 04:53:53,040 INFO L899 garLoopResultBuilder]: For program point L57(lines 57 61) no Hoare annotation was computed. [2023-11-19 04:53:53,040 INFO L899 garLoopResultBuilder]: For program point L24-1(lines 24 28) no Hoare annotation was computed. [2023-11-19 04:53:53,040 INFO L899 garLoopResultBuilder]: For program point L57-2(lines 57 61) no Hoare annotation was computed. [2023-11-19 04:53:53,041 INFO L902 garLoopResultBuilder]: At program point L24-2(lines 24 28) the Hoare annotation is: true [2023-11-19 04:53:53,041 INFO L899 garLoopResultBuilder]: For program point L24-3(lines 24 28) no Hoare annotation was computed. [2023-11-19 04:53:53,041 INFO L899 garLoopResultBuilder]: For program point L78-1(lines 78 82) no Hoare annotation was computed. [2023-11-19 04:53:53,042 INFO L902 garLoopResultBuilder]: At program point L78-2(lines 78 82) the Hoare annotation is: true [2023-11-19 04:53:53,042 INFO L899 garLoopResultBuilder]: For program point L78-3(lines 78 82) no Hoare annotation was computed. [2023-11-19 04:53:53,042 INFO L899 garLoopResultBuilder]: For program point __ieee754_sqrtfFINAL(lines 19 84) no Hoare annotation was computed. [2023-11-19 04:53:53,042 INFO L899 garLoopResultBuilder]: For program point L41-2(lines 41 42) no Hoare annotation was computed. [2023-11-19 04:53:53,043 INFO L902 garLoopResultBuilder]: At program point L41-3(lines 41 42) the Hoare annotation is: true [2023-11-19 04:53:53,043 INFO L899 garLoopResultBuilder]: For program point L70(lines 70 73) no Hoare annotation was computed. [2023-11-19 04:53:53,043 INFO L899 garLoopResultBuilder]: For program point L41-4(lines 41 42) no Hoare annotation was computed. [2023-11-19 04:53:53,044 INFO L899 garLoopResultBuilder]: For program point L66(lines 66 75) no Hoare annotation was computed. [2023-11-19 04:53:53,044 INFO L899 garLoopResultBuilder]: For program point __ieee754_sqrtfEXIT(lines 19 84) no Hoare annotation was computed. [2023-11-19 04:53:53,044 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 19 84) the Hoare annotation is: true [2023-11-19 04:53:53,044 INFO L899 garLoopResultBuilder]: For program point L34(lines 34 35) no Hoare annotation was computed. [2023-11-19 04:53:53,045 INFO L902 garLoopResultBuilder]: At program point L55-2(lines 55 64) the Hoare annotation is: true [2023-11-19 04:53:53,045 INFO L899 garLoopResultBuilder]: For program point L55-3(lines 19 84) no Hoare annotation was computed. [2023-11-19 04:53:53,045 INFO L899 garLoopResultBuilder]: For program point L47(lines 47 48) no Hoare annotation was computed. [2023-11-19 04:53:53,046 INFO L899 garLoopResultBuilder]: For program point L47-2(lines 47 48) no Hoare annotation was computed. [2023-11-19 04:53:53,046 INFO L899 garLoopResultBuilder]: For program point L68(lines 68 74) no Hoare annotation was computed. [2023-11-19 04:53:53,050 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-19 04:53:53,053 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:53:53,068 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists currentRoundingMode : FloatRoundingMode :: ~x == ~fp.div~32(currentRoundingMode, ~to_fp~32(currentRoundingMode, 1.0), ~Pluszero~32())) could not be translated [2023-11-19 04:53:53,069 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated [2023-11-19 04:53:53,072 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:53:53 BoogieIcfgContainer [2023-11-19 04:53:53,072 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:53:53,074 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:53:53,074 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:53:53,074 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:53:53,075 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:53:45" (3/4) ... [2023-11-19 04:53:53,078 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 04:53:53,085 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __ieee754_sqrtf [2023-11-19 04:53:53,097 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2023-11-19 04:53:53,098 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-11-19 04:53:53,099 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 04:53:53,100 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 04:53:53,288 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 04:53:53,289 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/witness.yml [2023-11-19 04:53:53,289 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:53:53,290 INFO L158 Benchmark]: Toolchain (without parser) took 19863.17ms. Allocated memory was 77.6MB in the beginning and 98.6MB in the end (delta: 21.0MB). Free memory was 53.5MB in the beginning and 71.0MB in the end (delta: -17.4MB). Peak memory consumption was 32.1MB. Max. memory is 16.1GB. [2023-11-19 04:53:53,290 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 77.6MB. Free memory is still 53.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:53:53,292 INFO L158 Benchmark]: CACSL2BoogieTranslator took 344.11ms. Allocated memory is still 77.6MB. Free memory was 53.4MB in the beginning and 39.0MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 04:53:53,293 INFO L158 Benchmark]: Boogie Procedure Inliner took 107.91ms. Allocated memory was 77.6MB in the beginning and 98.6MB in the end (delta: 21.0MB). Free memory was 39.0MB in the beginning and 77.3MB in the end (delta: -38.3MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2023-11-19 04:53:53,293 INFO L158 Benchmark]: Boogie Preprocessor took 106.49ms. Allocated memory is still 98.6MB. Free memory was 77.3MB in the beginning and 75.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:53:53,294 INFO L158 Benchmark]: RCFGBuilder took 11526.74ms. Allocated memory is still 98.6MB. Free memory was 74.9MB in the beginning and 55.7MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 04:53:53,294 INFO L158 Benchmark]: TraceAbstraction took 7552.28ms. Allocated memory is still 98.6MB. Free memory was 55.0MB in the beginning and 47.8MB in the end (delta: 7.2MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2023-11-19 04:53:53,295 INFO L158 Benchmark]: Witness Printer took 215.51ms. Allocated memory is still 98.6MB. Free memory was 47.8MB in the beginning and 71.0MB in the end (delta: -23.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 04:53:53,297 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 77.6MB. Free memory is still 53.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 344.11ms. Allocated memory is still 77.6MB. Free memory was 53.4MB in the beginning and 39.0MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 107.91ms. Allocated memory was 77.6MB in the beginning and 98.6MB in the end (delta: 21.0MB). Free memory was 39.0MB in the beginning and 77.3MB in the end (delta: -38.3MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 106.49ms. Allocated memory is still 98.6MB. Free memory was 77.3MB in the beginning and 75.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 11526.74ms. Allocated memory is still 98.6MB. Free memory was 74.9MB in the beginning and 55.7MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 7552.28ms. Allocated memory is still 98.6MB. Free memory was 55.0MB in the beginning and 47.8MB in the end (delta: 7.2MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. * Witness Printer took 215.51ms. Allocated memory is still 98.6MB. Free memory was 47.8MB in the beginning and 71.0MB in the end (delta: -23.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists currentRoundingMode : FloatRoundingMode :: ~x == ~fp.div~32(currentRoundingMode, ~to_fp~32(currentRoundingMode, 1.0), ~Pluszero~32())) could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated * 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 - PositiveResult [Line: 175]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 107 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27 IncrementalHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 82 mSDtfsCounter, 27 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=0, InterpolantAutomatonStates: 14, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 25 PreInvPairs, 26 NumberOfFragments, 22 HoareAnnotationTreeSize, 25 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 29 ConstructedInterpolants, 4 QuantifiedInterpolants, 178 SizeOfPredicates, 16 NumberOfNonLiveVariables, 156 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 78]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 146]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 98]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 141]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2023-11-19 04:53:53,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1a6d85-2dbc-4b51-9b91-8706368ae223/bin/utaipan-verify-t7M7D8N6sZ/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: TRUE