./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1271b.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_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1271b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 54beaedde19fb88c3dc27e1161ae96882063bbaad8d02ac66ce4442258b91813 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:38:58,670 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:38:58,797 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:38:58,804 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:38:58,806 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:38:58,846 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:38:58,847 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:38:58,848 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:38:58,849 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:38:58,854 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:38:58,855 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:38:58,855 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:38:58,856 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:38:58,857 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:38:58,858 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:38:58,858 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:38:58,859 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:38:58,859 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:38:58,860 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:38:58,860 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:38:58,861 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:38:58,861 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:38:58,862 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:38:58,862 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:38:58,862 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:38:58,863 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:38:58,864 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:38:58,864 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:38:58,865 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:38:58,865 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:38:58,867 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:38:58,867 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:38:58,867 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:38:58,867 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:38:58,868 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:38:58,868 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:38:58,868 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:38:58,868 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:38:58,869 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:38:58,869 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54beaedde19fb88c3dc27e1161ae96882063bbaad8d02ac66ce4442258b91813 [2023-11-19 07:38:59,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:38:59,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:38:59,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:38:59,211 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:38:59,212 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:38:59,213 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/float-newlib/float_req_bl_1271b.c [2023-11-19 07:39:02,376 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:39:02,683 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:39:02,683 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/sv-benchmarks/c/float-newlib/float_req_bl_1271b.c [2023-11-19 07:39:02,693 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu/data/ed42eaf52/19b9f2467cfb4d72adcbfe64c71efe09/FLAGfc58aaf1a [2023-11-19 07:39:02,708 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu/data/ed42eaf52/19b9f2467cfb4d72adcbfe64c71efe09 [2023-11-19 07:39:02,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:39:02,712 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:39:02,714 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:39:02,714 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:39:02,720 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:39:02,721 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:02" (1/1) ... [2023-11-19 07:39:02,721 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38f301aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:02, skipping insertion in model container [2023-11-19 07:39:02,722 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:02" (1/1) ... [2023-11-19 07:39:02,755 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:39:02,971 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_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/sv-benchmarks/c/float-newlib/float_req_bl_1271b.c[4883,4896] [2023-11-19 07:39:02,975 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:39:02,986 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:39:03,050 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_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/sv-benchmarks/c/float-newlib/float_req_bl_1271b.c[4883,4896] [2023-11-19 07:39:03,051 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:39:03,078 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:39:03,079 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:03 WrapperNode [2023-11-19 07:39:03,079 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:39:03,080 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:39:03,080 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:39:03,081 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:39:03,088 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:03" (1/1) ... [2023-11-19 07:39:03,100 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:03" (1/1) ... [2023-11-19 07:39:03,133 INFO L138 Inliner]: procedures = 19, calls = 76, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 277 [2023-11-19 07:39:03,133 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:39:03,134 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:39:03,134 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:39:03,134 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:39:03,147 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:03" (1/1) ... [2023-11-19 07:39:03,147 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:03" (1/1) ... [2023-11-19 07:39:03,153 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:03" (1/1) ... [2023-11-19 07:39:03,154 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:03" (1/1) ... [2023-11-19 07:39:03,179 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:03" (1/1) ... [2023-11-19 07:39:03,186 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:03" (1/1) ... [2023-11-19 07:39:03,205 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:03" (1/1) ... [2023-11-19 07:39:03,208 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:03" (1/1) ... [2023-11-19 07:39:03,212 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:39:03,213 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:39:03,213 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:39:03,213 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:39:03,214 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:03" (1/1) ... [2023-11-19 07:39:03,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:39:03,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:03,257 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:39:03,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:39:03,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:39:03,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:39:03,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:39:03,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-19 07:39:03,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:39:03,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-19 07:39:03,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:39:03,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:39:03,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:39:03,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:39:03,311 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2023-11-19 07:39:03,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2023-11-19 07:39:03,466 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:39:03,469 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:39:04,119 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:39:04,127 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:39:04,127 INFO L302 CfgBuilder]: Removed 34 assume(true) statements. [2023-11-19 07:39:04,132 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:39:04 BoogieIcfgContainer [2023-11-19 07:39:04,132 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:39:04,135 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:39:04,135 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:39:04,138 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:39:04,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:39:02" (1/3) ... [2023-11-19 07:39:04,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16cb3000 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:39:04, skipping insertion in model container [2023-11-19 07:39:04,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:03" (2/3) ... [2023-11-19 07:39:04,140 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16cb3000 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:39:04, skipping insertion in model container [2023-11-19 07:39:04,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:39:04" (3/3) ... [2023-11-19 07:39:04,141 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1271b.c [2023-11-19 07:39:04,161 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:39:04,161 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:39:04,211 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:39:04,219 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=PETRI_NET, 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;@31e46e28, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:39:04,219 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:39:04,223 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 92 states have (on average 1.684782608695652) internal successors, (155), 93 states have internal predecessors, (155), 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 07:39:04,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-19 07:39:04,234 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:04,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:04,235 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:39:04,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:04,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1119796192, now seen corresponding path program 1 times [2023-11-19 07:39:04,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:04,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318451703] [2023-11-19 07:39:04,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:04,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:04,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:39:04,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:04,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318451703] [2023-11-19 07:39:04,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318451703] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:04,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:04,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:39:04,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290204708] [2023-11-19 07:39:04,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:04,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:39:04,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:04,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:39:04,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:39:04,459 INFO L87 Difference]: Start difference. First operand has 97 states, 92 states have (on average 1.684782608695652) internal successors, (155), 93 states have internal predecessors, (155), 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 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:04,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:04,524 INFO L93 Difference]: Finished difference Result 192 states and 318 transitions. [2023-11-19 07:39:04,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:39:04,526 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-19 07:39:04,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:04,535 INFO L225 Difference]: With dead ends: 192 [2023-11-19 07:39:04,535 INFO L226 Difference]: Without dead ends: 93 [2023-11-19 07:39:04,539 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 07:39:04,543 INFO L413 NwaCegarLoop]: 123 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, 123 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 07:39:04,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:39:04,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-11-19 07:39:04,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2023-11-19 07:39:04,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 89 states have (on average 1.2808988764044944) internal successors, (114), 89 states have internal predecessors, (114), 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 07:39:04,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 118 transitions. [2023-11-19 07:39:04,600 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 118 transitions. Word has length 18 [2023-11-19 07:39:04,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:04,600 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 118 transitions. [2023-11-19 07:39:04,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:04,601 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 118 transitions. [2023-11-19 07:39:04,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 07:39:04,602 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:04,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:04,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:39:04,603 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:39:04,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:04,604 INFO L85 PathProgramCache]: Analyzing trace with hash 46998031, now seen corresponding path program 1 times [2023-11-19 07:39:04,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:04,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512463128] [2023-11-19 07:39:04,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:04,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:39:04,766 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:39:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:39:04,904 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:39:04,908 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:39:04,910 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 07:39:04,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:39:04,916 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 07:39:04,919 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:39:04,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:39:04 BoogieIcfgContainer [2023-11-19 07:39:04,953 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:39:04,954 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:39:04,954 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:39:04,954 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:39:04,955 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:39:04" (3/4) ... [2023-11-19 07:39:04,957 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 07:39:04,958 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:39:04,959 INFO L158 Benchmark]: Toolchain (without parser) took 2246.60ms. Allocated memory is still 151.0MB. Free memory was 118.9MB in the beginning and 74.6MB in the end (delta: 44.3MB). Peak memory consumption was 45.4MB. Max. memory is 16.1GB. [2023-11-19 07:39:04,960 INFO L158 Benchmark]: CDTParser took 0.51ms. Allocated memory is still 109.1MB. Free memory was 69.0MB in the beginning and 68.9MB in the end (delta: 71.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:39:04,961 INFO L158 Benchmark]: CACSL2BoogieTranslator took 365.47ms. Allocated memory is still 151.0MB. Free memory was 118.6MB in the beginning and 104.3MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 07:39:04,961 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.95ms. Allocated memory is still 151.0MB. Free memory was 104.3MB in the beginning and 102.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:39:04,962 INFO L158 Benchmark]: Boogie Preprocessor took 78.28ms. Allocated memory is still 151.0MB. Free memory was 102.1MB in the beginning and 99.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:39:04,963 INFO L158 Benchmark]: RCFGBuilder took 919.23ms. Allocated memory is still 151.0MB. Free memory was 99.7MB in the beginning and 113.1MB in the end (delta: -13.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-19 07:39:04,963 INFO L158 Benchmark]: TraceAbstraction took 818.76ms. Allocated memory is still 151.0MB. Free memory was 112.4MB in the beginning and 74.6MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2023-11-19 07:39:04,964 INFO L158 Benchmark]: Witness Printer took 4.46ms. Allocated memory is still 151.0MB. Free memory is still 74.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:39:04,967 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51ms. Allocated memory is still 109.1MB. Free memory was 69.0MB in the beginning and 68.9MB in the end (delta: 71.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 365.47ms. Allocated memory is still 151.0MB. Free memory was 118.6MB in the beginning and 104.3MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.95ms. Allocated memory is still 151.0MB. Free memory was 104.3MB in the beginning and 102.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 78.28ms. Allocated memory is still 151.0MB. Free memory was 102.1MB in the beginning and 99.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 919.23ms. Allocated memory is still 151.0MB. Free memory was 99.7MB in the beginning and 113.1MB in the end (delta: -13.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 818.76ms. Allocated memory is still 151.0MB. Free memory was 112.4MB in the beginning and 74.6MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Witness Printer took 4.46ms. Allocated memory is still 151.0MB. Free memory is still 74.6MB. There was no memory consumed. 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: 241]: 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 213, overapproximation of someBinaryArithmeticFLOAToperation at line 120. Possible FailurePath: [L14] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L234] float x = __VERIFIER_nondet_float(); [L235] float y = 0.0f / 0.0f; [L237] CALL isfinite_float(x) [L217] __int32_t ix; VAL [\old(x)=4286578709, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4286578709] [L219] ieee_float_shape_type gf_u; [L220] EXPR gf_u.value = (x) [L221] EXPR gf_u.word [L221] EXPR (ix) = gf_u.word [L218-L222] { ieee_float_shape_type gf_u; gf_u.value = (x); (ix) = gf_u.word; } VAL [\old(x)=4286578709, ix=-8388609, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4286578709] [L223] ix &= 0x7fffffff [L224] return (((ix) < 0x7f800000L)); VAL [\old(x)=4286578709, \result=1, ix=2139095039, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4286578709] [L237] RET isfinite_float(x) [L237] COND TRUE isfinite_float(x) [L238] CALL, EXPR __ieee754_hypotf(x, y) [L84] float a = x, b = y, t1, t2, y1, y2, w; [L85] __int32_t j, k, ha, hb; VAL [\old(x)=4286578709, \old(y)=4286578710, a=4286578709, b=4286578710, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4286578709, y=4286578710] [L88] ieee_float_shape_type gf_u; [L89] EXPR gf_u.value = (x) [L90] EXPR gf_u.word [L90] EXPR (ha) = gf_u.word [L87-L91] { ieee_float_shape_type gf_u; gf_u.value = (x); (ha) = gf_u.word; } VAL [\old(x)=4286578709, \old(y)=4286578710, a=4286578709, b=4286578710, ha=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4286578709, y=4286578710] [L92] ha &= 0x7fffffffL VAL [\old(x)=4286578709, \old(y)=4286578710, a=4286578709, b=4286578710, ha=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4286578709, y=4286578710] [L94] ieee_float_shape_type gf_u; [L95] EXPR gf_u.value = (y) [L96] EXPR gf_u.word [L96] EXPR (hb) = gf_u.word [L93-L97] { ieee_float_shape_type gf_u; gf_u.value = (y); (hb) = gf_u.word; } VAL [\old(x)=4286578709, \old(y)=4286578710, a=4286578709, b=4286578710, ha=0, hb=-1895825407, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4286578709, y=4286578710] [L98] hb &= 0x7fffffffL VAL [\old(x)=4286578709, \old(y)=4286578710, a=4286578709, b=4286578710, ha=0, hb=251658241, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4286578709, y=4286578710] [L99] COND TRUE hb > ha [L100] a = y [L101] b = x [L102] j = ha [L103] ha = hb [L104] hb = j VAL [\old(x)=4286578709, \old(y)=4286578710, a=4286578710, b=4286578709, ha=251658241, hb=0, j=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4286578709, y=4286578710] [L110] ieee_float_shape_type sf_u; [L111] EXPR sf_u.word = (ha) [L112] EXPR sf_u.value [L112] EXPR (a) = sf_u.value [L109-L113] { ieee_float_shape_type sf_u; sf_u.word = (ha); (a) = sf_u.value; } VAL [\old(x)=4286578709, \old(y)=4286578710, a=4286578707, b=4286578709, ha=251658241, hb=0, j=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4286578709, y=4286578710] [L115] ieee_float_shape_type sf_u; [L116] EXPR sf_u.word = (hb) [L117] EXPR sf_u.value [L117] EXPR (b) = sf_u.value [L114-L118] { ieee_float_shape_type sf_u; sf_u.word = (hb); (b) = sf_u.value; } VAL [\old(x)=4286578709, \old(y)=4286578710, a=4286578707, b=4286578711, ha=251658241, hb=0, j=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4286578709, y=4286578710] [L119] COND TRUE (ha - hb) > 0xf000000L [L120] return a + b; VAL [\old(x)=4286578709, \old(y)=4286578710, a=4286578707, b=4286578711, ha=251658241, hb=0, j=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4286578709, y=4286578710] [L238] RET, EXPR __ieee754_hypotf(x, y) [L238] float res = __ieee754_hypotf(x, y); [L240] CALL, EXPR isnan_float(res) [L213] return x != x; VAL [\old(x)=4286578708, \result=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4286578708] [L240] RET, EXPR isnan_float(res) [L240] COND TRUE !isnan_float(res) [L241] reach_error() VAL [one_sqrt=1, res=4286578708, tiny_sqrt=1/1000000000000000000000000000000, x=4286578709, y=4286578710] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 97 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, 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, 123 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 123 mSDtfsCounter, 0 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=97occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 17 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 07:39:05,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu/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_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1271b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 54beaedde19fb88c3dc27e1161ae96882063bbaad8d02ac66ce4442258b91813 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:39:07,725 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:39:07,870 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-19 07:39:07,878 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:39:07,879 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:39:07,923 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:39:07,923 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:39:07,924 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:39:07,925 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:39:07,931 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:39:07,932 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:39:07,932 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:39:07,933 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:39:07,935 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:39:07,935 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:39:07,936 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:39:07,936 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:39:07,936 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:39:07,937 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:39:07,937 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:39:07,938 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:39:07,938 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:39:07,939 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 07:39:07,939 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 07:39:07,940 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:39:07,940 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:39:07,941 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:39:07,941 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:39:07,942 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:39:07,942 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:39:07,944 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:39:07,944 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:39:07,944 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:39:07,945 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:39:07,945 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 07:39:07,945 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 07:39:07,948 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:39:07,948 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:39:07,948 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:39:07,949 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:39:07,950 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 07:39:07,950 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:39:07,951 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54beaedde19fb88c3dc27e1161ae96882063bbaad8d02ac66ce4442258b91813 [2023-11-19 07:39:08,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:39:08,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:39:08,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:39:08,341 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:39:08,342 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:39:08,343 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/float-newlib/float_req_bl_1271b.c [2023-11-19 07:39:11,456 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:39:11,772 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:39:11,774 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/sv-benchmarks/c/float-newlib/float_req_bl_1271b.c [2023-11-19 07:39:11,783 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu/data/89a0633a3/0dd54ce9e62f4bbd983a0dc23495174e/FLAG6c0bbb065 [2023-11-19 07:39:11,798 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu/data/89a0633a3/0dd54ce9e62f4bbd983a0dc23495174e [2023-11-19 07:39:11,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:39:11,806 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:39:11,809 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:39:11,809 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:39:11,814 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:39:11,815 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:11" (1/1) ... [2023-11-19 07:39:11,816 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78a8c8f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:11, skipping insertion in model container [2023-11-19 07:39:11,816 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:11" (1/1) ... [2023-11-19 07:39:11,845 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:39:12,095 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_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/sv-benchmarks/c/float-newlib/float_req_bl_1271b.c[4883,4896] [2023-11-19 07:39:12,100 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:39:12,115 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:39:12,164 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_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/sv-benchmarks/c/float-newlib/float_req_bl_1271b.c[4883,4896] [2023-11-19 07:39:12,165 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:39:12,183 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:39:12,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:12 WrapperNode [2023-11-19 07:39:12,184 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:39:12,185 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:39:12,185 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:39:12,185 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:39:12,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:12" (1/1) ... [2023-11-19 07:39:12,211 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:12" (1/1) ... [2023-11-19 07:39:12,242 INFO L138 Inliner]: procedures = 22, calls = 76, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 276 [2023-11-19 07:39:12,243 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:39:12,244 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:39:12,244 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:39:12,244 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:39:12,253 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:12" (1/1) ... [2023-11-19 07:39:12,254 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:12" (1/1) ... [2023-11-19 07:39:12,263 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:12" (1/1) ... [2023-11-19 07:39:12,263 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:12" (1/1) ... [2023-11-19 07:39:12,281 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:12" (1/1) ... [2023-11-19 07:39:12,289 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:12" (1/1) ... [2023-11-19 07:39:12,293 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:12" (1/1) ... [2023-11-19 07:39:12,295 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:12" (1/1) ... [2023-11-19 07:39:12,302 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:39:12,303 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:39:12,303 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:39:12,303 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:39:12,304 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:12" (1/1) ... [2023-11-19 07:39:12,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:39:12,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:12,339 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:39:12,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:39:12,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:39:12,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 07:39:12,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:39:12,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2023-11-19 07:39:12,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 07:39:12,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:39:12,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:39:12,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2023-11-19 07:39:12,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 07:39:12,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:39:12,384 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2023-11-19 07:39:12,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2023-11-19 07:39:12,533 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:39:12,536 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:39:14,097 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:39:14,108 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:39:14,108 INFO L302 CfgBuilder]: Removed 34 assume(true) statements. [2023-11-19 07:39:14,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:39:14 BoogieIcfgContainer [2023-11-19 07:39:14,113 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:39:14,116 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:39:14,116 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:39:14,119 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:39:14,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:39:11" (1/3) ... [2023-11-19 07:39:14,121 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5123750b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:39:14, skipping insertion in model container [2023-11-19 07:39:14,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:12" (2/3) ... [2023-11-19 07:39:14,121 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5123750b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:39:14, skipping insertion in model container [2023-11-19 07:39:14,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:39:14" (3/3) ... [2023-11-19 07:39:14,123 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1271b.c [2023-11-19 07:39:14,144 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:39:14,144 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:39:14,207 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:39:14,214 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=PETRI_NET, 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;@4793a7c4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:39:14,214 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:39:14,219 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 87 states have (on average 1.6781609195402298) internal successors, (146), 88 states have internal predecessors, (146), 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 07:39:14,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-19 07:39:14,226 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:14,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:14,228 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:39:14,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:14,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1119796192, now seen corresponding path program 1 times [2023-11-19 07:39:14,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:39:14,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1335359109] [2023-11-19 07:39:14,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:14,248 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 07:39:14,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:39:14,252 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu/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 07:39:14,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu/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 07:39:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:14,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:39:14,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:14,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:39:14,518 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:39:14,519 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:39:14,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1335359109] [2023-11-19 07:39:14,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1335359109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:14,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:14,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:39:14,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552669052] [2023-11-19 07:39:14,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:14,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:39:14,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:39:14,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:39:14,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:39:14,562 INFO L87 Difference]: Start difference. First operand has 92 states, 87 states have (on average 1.6781609195402298) internal successors, (146), 88 states have internal predecessors, (146), 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 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:14,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:14,600 INFO L93 Difference]: Finished difference Result 182 states and 300 transitions. [2023-11-19 07:39:14,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:39:14,603 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-19 07:39:14,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:14,612 INFO L225 Difference]: With dead ends: 182 [2023-11-19 07:39:14,612 INFO L226 Difference]: Without dead ends: 88 [2023-11-19 07:39:14,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 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 07:39:14,620 INFO L413 NwaCegarLoop]: 115 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, 115 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 07:39:14,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:39:14,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-11-19 07:39:14,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-11-19 07:39:14,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 84 states have (on average 1.2619047619047619) internal successors, (106), 84 states have internal predecessors, (106), 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 07:39:14,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 110 transitions. [2023-11-19 07:39:14,671 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 110 transitions. Word has length 18 [2023-11-19 07:39:14,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:14,671 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 110 transitions. [2023-11-19 07:39:14,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:14,672 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 110 transitions. [2023-11-19 07:39:14,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 07:39:14,673 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:14,673 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:14,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu/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 07:39:14,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu/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 07:39:14,879 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:39:14,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:14,880 INFO L85 PathProgramCache]: Analyzing trace with hash 46998031, now seen corresponding path program 1 times [2023-11-19 07:39:14,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:39:14,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [870128620] [2023-11-19 07:39:14,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:14,882 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 07:39:14,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:39:14,885 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu/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 07:39:14,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de0aa15-bede-47fa-b1b4-c43b0ec8734d/bin/uautomizer-verify-uCwYo4JHxu/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 07:39:15,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:15,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-19 07:39:15,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:15,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:39:15,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 28 [2023-11-19 07:39:16,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:39:16,801 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:39:16,802 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:39:16,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [870128620] [2023-11-19 07:39:16,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [870128620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:16,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:16,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-19 07:39:16,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693693073] [2023-11-19 07:39:16,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:16,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:39:16,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:39:16,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:39:16,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:39:16,806 INFO L87 Difference]: Start difference. First operand 88 states and 110 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:25,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:39:27,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:39:29,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:39:32,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:39:34,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:39:37,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:39:39,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:39:41,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:39:43,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:39:45,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:39:47,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:39:49,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:39:51,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:39:53,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:39:55,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:39:57,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:39:59,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 07:40:01,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 07:40:03,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 07:40:05,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 07:40:07,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]