./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1012b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1012b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh --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 e833158a76fcb6c2772449e786bfe7e91a3ec1f9488e1d61542cc7f9c3dece0e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:47:15,182 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:47:15,268 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 15:47:15,272 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:47:15,273 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:47:15,296 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:47:15,296 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:47:15,297 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:47:15,298 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:47:15,298 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:47:15,299 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:47:15,299 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:47:15,300 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:47:15,300 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:47:15,301 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:47:15,301 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:47:15,302 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:47:15,302 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:47:15,303 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:47:15,303 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:47:15,304 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:47:15,306 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:47:15,306 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:47:15,307 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:47:15,307 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:47:15,307 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:47:15,308 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:47:15,308 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:47:15,308 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:47:15,309 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:47:15,309 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:47:15,309 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:47:15,310 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:47:15,310 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:47:15,310 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:47:15,310 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:47:15,311 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:47:15,311 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:47:15,311 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:47:15,311 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:47:15,311 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:47:15,312 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:47:15,312 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:47:15,312 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:47:15,312 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:47:15,313 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:47:15,313 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:47:15,313 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_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e833158a76fcb6c2772449e786bfe7e91a3ec1f9488e1d61542cc7f9c3dece0e [2023-12-02 15:47:15,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:47:15,574 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:47:15,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:47:15,577 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:47:15,578 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:47:15,579 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/float-newlib/float_req_bl_1012b.c [2023-12-02 15:47:20,434 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:47:20,599 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:47:20,599 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/sv-benchmarks/c/float-newlib/float_req_bl_1012b.c [2023-12-02 15:47:20,605 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/data/036ef0ae0/b119f9f92135429bacf1089820c15980/FLAGe4ded083d [2023-12-02 15:47:20,619 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/data/036ef0ae0/b119f9f92135429bacf1089820c15980 [2023-12-02 15:47:20,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:47:20,622 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:47:20,623 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:47:20,624 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:47:20,627 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:47:20,628 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:47:20" (1/1) ... [2023-12-02 15:47:20,629 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60a46b51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:20, skipping insertion in model container [2023-12-02 15:47:20,629 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:47:20" (1/1) ... [2023-12-02 15:47:20,648 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:47:20,806 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_7949b1bd-c724-4013-ad95-d4c569d229a2/sv-benchmarks/c/float-newlib/float_req_bl_1012b.c[1158,1171] [2023-12-02 15:47:20,810 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:47:20,819 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:47:20,836 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_7949b1bd-c724-4013-ad95-d4c569d229a2/sv-benchmarks/c/float-newlib/float_req_bl_1012b.c[1158,1171] [2023-12-02 15:47:20,837 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:47:20,849 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:47:20,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:20 WrapperNode [2023-12-02 15:47:20,850 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:47:20,851 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:47:20,851 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:47:20,851 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:47:20,858 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:20" (1/1) ... [2023-12-02 15:47:20,865 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:20" (1/1) ... [2023-12-02 15:47:20,880 INFO L138 Inliner]: procedures = 16, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 68 [2023-12-02 15:47:20,881 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:47:20,882 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:47:20,882 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:47:20,882 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:47:20,888 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:20" (1/1) ... [2023-12-02 15:47:20,888 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:20" (1/1) ... [2023-12-02 15:47:20,890 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:20" (1/1) ... [2023-12-02 15:47:20,891 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:20" (1/1) ... [2023-12-02 15:47:20,897 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:20" (1/1) ... [2023-12-02 15:47:20,901 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:20" (1/1) ... [2023-12-02 15:47:20,903 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:20" (1/1) ... [2023-12-02 15:47:20,904 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:20" (1/1) ... [2023-12-02 15:47:20,906 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:47:20,907 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:47:20,907 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:47:20,907 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:47:20,908 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:20" (1/1) ... [2023-12-02 15:47:20,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:47:20,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:47:20,942 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:47:20,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:47:20,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:47:20,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:47:20,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 15:47:20,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-12-02 15:47:20,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 15:47:20,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-12-02 15:47:20,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:47:20,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:47:20,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 15:47:20,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 15:47:21,053 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:47:21,056 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:47:21,181 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:47:21,209 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:47:21,209 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-12-02 15:47:21,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:47:21 BoogieIcfgContainer [2023-12-02 15:47:21,211 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:47:21,215 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:47:21,215 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:47:21,218 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:47:21,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:47:20" (1/3) ... [2023-12-02 15:47:21,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57fdc48d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:47:21, skipping insertion in model container [2023-12-02 15:47:21,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:20" (2/3) ... [2023-12-02 15:47:21,220 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57fdc48d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:47:21, skipping insertion in model container [2023-12-02 15:47:21,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:47:21" (3/3) ... [2023-12-02 15:47:21,221 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1012b.c [2023-12-02 15:47:21,237 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:47:21,237 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 15:47:21,282 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:47:21,288 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;@35d1b3a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:47:21,289 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 15:47:21,292 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 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) [2023-12-02 15:47:21,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 15:47:21,297 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:47:21,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:47:21,299 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:47:21,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:47:21,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1051332728, now seen corresponding path program 1 times [2023-12-02 15:47:21,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:47:21,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251696738] [2023-12-02 15:47:21,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:21,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:47:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:47:21,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:47:21,432 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:47:21,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251696738] [2023-12-02 15:47:21,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251696738] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:47:21,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:47:21,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:47:21,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931934034] [2023-12-02 15:47:21,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:47:21,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 15:47:21,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:47:21,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 15:47:21,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 15:47:21,467 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:47:21,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:47:21,491 INFO L93 Difference]: Finished difference Result 27 states and 39 transitions. [2023-12-02 15:47:21,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 15:47:21,493 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-02 15:47:21,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:47:21,500 INFO L225 Difference]: With dead ends: 27 [2023-12-02 15:47:21,500 INFO L226 Difference]: Without dead ends: 12 [2023-12-02 15:47:21,502 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 [2023-12-02 15:47:21,506 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:47:21,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:47:21,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-12-02 15:47:21,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-12-02 15:47:21,530 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) [2023-12-02 15:47:21,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2023-12-02 15:47:21,532 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 8 [2023-12-02 15:47:21,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:47:21,532 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2023-12-02 15:47:21,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:47:21,533 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2023-12-02 15:47:21,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 15:47:21,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:47:21,534 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:47:21,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 15:47:21,534 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:47:21,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:47:21,535 INFO L85 PathProgramCache]: Analyzing trace with hash 604617598, now seen corresponding path program 1 times [2023-12-02 15:47:21,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:47:21,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964367724] [2023-12-02 15:47:21,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:21,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:47:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 15:47:21,598 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 15:47:21,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 15:47:21,658 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 15:47:21,658 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 15:47:21,660 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 15:47:21,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 15:47:21,664 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-12-02 15:47:21,666 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 15:47:21,684 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:47:21 BoogieIcfgContainer [2023-12-02 15:47:21,684 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 15:47:21,685 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 15:47:21,685 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 15:47:21,685 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 15:47:21,686 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:47:21" (3/4) ... [2023-12-02 15:47:21,688 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 15:47:21,688 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 15:47:21,689 INFO L158 Benchmark]: Toolchain (without parser) took 1066.54ms. Allocated memory is still 172.0MB. Free memory was 131.2MB in the beginning and 92.2MB in the end (delta: 39.1MB). Peak memory consumption was 38.4MB. Max. memory is 16.1GB. [2023-12-02 15:47:21,689 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 121.6MB. Free memory is still 89.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:47:21,690 INFO L158 Benchmark]: CACSL2BoogieTranslator took 226.60ms. Allocated memory is still 172.0MB. Free memory was 131.2MB in the beginning and 135.2MB in the end (delta: -3.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 15:47:21,691 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.18ms. Allocated memory is still 172.0MB. Free memory was 135.2MB in the beginning and 133.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 15:47:21,691 INFO L158 Benchmark]: Boogie Preprocessor took 24.76ms. Allocated memory is still 172.0MB. Free memory was 133.4MB in the beginning and 132.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:47:21,692 INFO L158 Benchmark]: RCFGBuilder took 304.32ms. Allocated memory is still 172.0MB. Free memory was 132.3MB in the beginning and 120.1MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 15:47:21,692 INFO L158 Benchmark]: TraceAbstraction took 469.67ms. Allocated memory is still 172.0MB. Free memory was 119.4MB in the beginning and 92.6MB in the end (delta: 26.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-12-02 15:47:21,693 INFO L158 Benchmark]: Witness Printer took 3.48ms. Allocated memory is still 172.0MB. Free memory was 92.6MB in the beginning and 92.2MB in the end (delta: 432.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 15:47:21,696 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 121.6MB. Free memory is still 89.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 226.60ms. Allocated memory is still 172.0MB. Free memory was 131.2MB in the beginning and 135.2MB in the end (delta: -3.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.18ms. Allocated memory is still 172.0MB. Free memory was 135.2MB in the beginning and 133.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.76ms. Allocated memory is still 172.0MB. Free memory was 133.4MB in the beginning and 132.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 304.32ms. Allocated memory is still 172.0MB. Free memory was 132.3MB in the beginning and 120.1MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 469.67ms. Allocated memory is still 172.0MB. Free memory was 119.4MB in the beginning and 92.6MB in the end (delta: 26.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 3.48ms. Allocated memory is still 172.0MB. Free memory was 92.6MB in the beginning and 92.2MB in the end (delta: 432.9kB). 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: 53]: 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 someBinaryArithmeticFLOAToperation at line 48. Possible FailurePath: [L48] float x = -1.0f / 0.0f; [L49] CALL, EXPR fabs_float(x) [L14] __uint32_t ix; VAL [\old(x)=10, x=10] [L16] ieee_float_shape_type gf_u; [L17] EXPR gf_u.value = (x) [L18] EXPR gf_u.word [L18] EXPR (ix) = gf_u.word [L15-L19] { ieee_float_shape_type gf_u; gf_u.value = (x); (ix) = gf_u.word; } VAL [\old(x)=10, ix=8, x=10] [L21] ieee_float_shape_type sf_u; [L22] EXPR sf_u.word = (ix & 0x7fffffff) [L23] EXPR sf_u.value [L23] EXPR (x) = sf_u.value [L20-L24] { ieee_float_shape_type sf_u; sf_u.word = (ix & 0x7fffffff); (x) = sf_u.value; } VAL [\old(x)=10, ix=8, x=9] [L25] return x; [L49] RET, EXPR fabs_float(x) [L49] float res = fabs_float(x); [L52] CALL, EXPR isinf_float(res) [L30] __int32_t ix; VAL [\old(x)=9, x=9] [L32] ieee_float_shape_type gf_u; [L33] EXPR gf_u.value = (x) [L34] EXPR gf_u.word [L34] EXPR (ix) = gf_u.word [L31-L35] { ieee_float_shape_type gf_u; gf_u.value = (x); (ix) = gf_u.word; } VAL [\old(x)=9, ix=-2147483648, x=9] [L36] ix &= 0x7fffffff [L37] return ((ix) == 0x7f800000L); [L52] RET, EXPR isinf_float(res) [L52] COND TRUE !isinf_float(res) [L53] reach_error() VAL [res=9, x=10] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, 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, 9 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 9 mSDtfsCounter, 4 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=14occurred 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, 0.0s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 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 [2023-12-02 15:47:21,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/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_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1012b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh --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 e833158a76fcb6c2772449e786bfe7e91a3ec1f9488e1d61542cc7f9c3dece0e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:47:23,669 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:47:23,747 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 15:47:23,753 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:47:23,754 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:47:23,782 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:47:23,782 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:47:23,783 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:47:23,784 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:47:23,784 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:47:23,785 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:47:23,785 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:47:23,786 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:47:23,786 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:47:23,787 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:47:23,787 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:47:23,788 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:47:23,789 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:47:23,789 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:47:23,790 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:47:23,790 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:47:23,791 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:47:23,791 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:47:23,792 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:47:23,792 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 15:47:23,793 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 15:47:23,793 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 15:47:23,794 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:47:23,794 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:47:23,794 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:47:23,795 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:47:23,795 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 15:47:23,796 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:47:23,796 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:47:23,796 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:47:23,796 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:47:23,797 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:47:23,797 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:47:23,797 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 15:47:23,797 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 15:47:23,798 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:47:23,798 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:47:23,798 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:47:23,798 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:47:23,799 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_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e833158a76fcb6c2772449e786bfe7e91a3ec1f9488e1d61542cc7f9c3dece0e [2023-12-02 15:47:24,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:47:24,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:47:24,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:47:24,105 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:47:24,105 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:47:24,107 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/float-newlib/float_req_bl_1012b.c [2023-12-02 15:47:26,893 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:47:27,085 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:47:27,086 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/sv-benchmarks/c/float-newlib/float_req_bl_1012b.c [2023-12-02 15:47:27,092 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/data/309db7451/705a082d614840c5ab3e9a866878ab2a/FLAGf0d5145e6 [2023-12-02 15:47:27,106 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/data/309db7451/705a082d614840c5ab3e9a866878ab2a [2023-12-02 15:47:27,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:47:27,110 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:47:27,111 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:47:27,111 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:47:27,117 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:47:27,117 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:47:27" (1/1) ... [2023-12-02 15:47:27,118 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@515e6bfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:27, skipping insertion in model container [2023-12-02 15:47:27,119 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:47:27" (1/1) ... [2023-12-02 15:47:27,141 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:47:27,318 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_7949b1bd-c724-4013-ad95-d4c569d229a2/sv-benchmarks/c/float-newlib/float_req_bl_1012b.c[1158,1171] [2023-12-02 15:47:27,323 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:47:27,338 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:47:27,361 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_7949b1bd-c724-4013-ad95-d4c569d229a2/sv-benchmarks/c/float-newlib/float_req_bl_1012b.c[1158,1171] [2023-12-02 15:47:27,362 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:47:27,382 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:47:27,382 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:27 WrapperNode [2023-12-02 15:47:27,383 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:47:27,384 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:47:27,384 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:47:27,384 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:47:27,393 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:27" (1/1) ... [2023-12-02 15:47:27,403 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:27" (1/1) ... [2023-12-02 15:47:27,426 INFO L138 Inliner]: procedures = 19, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 68 [2023-12-02 15:47:27,427 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:47:27,428 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:47:27,428 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:47:27,428 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:47:27,438 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:27" (1/1) ... [2023-12-02 15:47:27,438 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:27" (1/1) ... [2023-12-02 15:47:27,443 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:27" (1/1) ... [2023-12-02 15:47:27,443 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:27" (1/1) ... [2023-12-02 15:47:27,453 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:27" (1/1) ... [2023-12-02 15:47:27,458 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:27" (1/1) ... [2023-12-02 15:47:27,460 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:27" (1/1) ... [2023-12-02 15:47:27,462 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:27" (1/1) ... [2023-12-02 15:47:27,465 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:47:27,466 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:47:27,467 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:47:27,467 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:47:27,468 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:27" (1/1) ... [2023-12-02 15:47:27,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:47:27,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:47:27,499 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:47:27,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:47:27,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:47:27,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 15:47:27,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 15:47:27,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2023-12-02 15:47:27,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 15:47:27,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:47:27,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:47:27,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2023-12-02 15:47:27,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 15:47:27,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 15:47:27,626 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:47:27,629 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:47:27,787 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:47:27,817 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:47:27,817 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-12-02 15:47:27,817 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:47:27 BoogieIcfgContainer [2023-12-02 15:47:27,817 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:47:27,820 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:47:27,820 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:47:27,822 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:47:27,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:47:27" (1/3) ... [2023-12-02 15:47:27,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47a0a3de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:47:27, skipping insertion in model container [2023-12-02 15:47:27,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:27" (2/3) ... [2023-12-02 15:47:27,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47a0a3de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:47:27, skipping insertion in model container [2023-12-02 15:47:27,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:47:27" (3/3) ... [2023-12-02 15:47:27,826 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1012b.c [2023-12-02 15:47:27,840 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:47:27,840 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 15:47:27,881 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:47:27,888 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;@66490c2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:47:27,888 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 15:47:27,891 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 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) [2023-12-02 15:47:27,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 15:47:27,897 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:47:27,898 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:47:27,898 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:47:27,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:47:27,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1051332728, now seen corresponding path program 1 times [2023-12-02 15:47:27,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:47:27,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1391831989] [2023-12-02 15:47:27,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:27,916 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 [2023-12-02 15:47:27,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:47:27,918 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 15:47:27,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 15:47:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:47:28,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 15:47:28,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:47:28,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:47:28,023 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:47:28,023 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:47:28,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1391831989] [2023-12-02 15:47:28,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1391831989] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:47:28,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:47:28,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:47:28,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154639149] [2023-12-02 15:47:28,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:47:28,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 15:47:28,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:47:28,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 15:47:28,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 15:47:28,061 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:47:28,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:47:28,087 INFO L93 Difference]: Finished difference Result 27 states and 39 transitions. [2023-12-02 15:47:28,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 15:47:28,089 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-02 15:47:28,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:47:28,098 INFO L225 Difference]: With dead ends: 27 [2023-12-02 15:47:28,098 INFO L226 Difference]: Without dead ends: 12 [2023-12-02 15:47:28,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 15:47:28,105 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:47:28,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:47:28,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-12-02 15:47:28,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-12-02 15:47:28,129 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) [2023-12-02 15:47:28,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2023-12-02 15:47:28,131 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 8 [2023-12-02 15:47:28,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:47:28,131 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2023-12-02 15:47:28,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:47:28,132 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2023-12-02 15:47:28,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 15:47:28,132 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:47:28,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:47:28,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 15:47:28,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 15:47:28,334 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:47:28,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:47:28,335 INFO L85 PathProgramCache]: Analyzing trace with hash 604617598, now seen corresponding path program 1 times [2023-12-02 15:47:28,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:47:28,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [966813212] [2023-12-02 15:47:28,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:28,336 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 [2023-12-02 15:47:28,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:47:28,338 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 15:47:28,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 15:47:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:47:28,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-02 15:47:28,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:47:28,549 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 [2023-12-02 15:47:28,656 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2023-12-02 15:47:28,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 36 [2023-12-02 15:47:28,904 INFO L349 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2023-12-02 15:47:28,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 40 [2023-12-02 15:47:28,921 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 15:47:28,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 30 [2023-12-02 15:47:29,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:47:29,103 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:47:29,103 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:47:29,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [966813212] [2023-12-02 15:47:29,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [966813212] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:47:29,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:47:29,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 15:47:29,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942813878] [2023-12-02 15:47:29,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:47:29,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 15:47:29,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:47:29,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 15:47:29,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-02 15:47:29,108 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 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) [2023-12-02 15:47:29,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:47:29,402 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2023-12-02 15:47:29,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 15:47:29,403 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 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 [2023-12-02 15:47:29,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:47:29,404 INFO L225 Difference]: With dead ends: 12 [2023-12-02 15:47:29,404 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 15:47:29,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-02 15:47:29,406 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 3 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:47:29,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 16 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:47:29,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 15:47:29,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 15:47:29,408 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) [2023-12-02 15:47:29,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 15:47:29,408 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2023-12-02 15:47:29,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:47:29,408 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 15:47:29,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 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) [2023-12-02 15:47:29,409 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 15:47:29,409 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 15:47:29,411 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 15:47:29,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-02 15:47:29,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 15:47:29,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 15:47:29,666 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 15:47:29,666 INFO L899 garLoopResultBuilder]: For program point L31-1(lines 31 35) no Hoare annotation was computed. [2023-12-02 15:47:29,667 INFO L895 garLoopResultBuilder]: At program point L31-2(lines 31 35) the Hoare annotation is: (exists ((v_arrayElimCell_1 (_ BitVec 32)) (|v_ULTIMATE.start_fabs_float_~#sf_u~0#1.base_12| (_ BitVec 32)) (currentRoundingMode RoundingMode)) (let ((.cse0 (select (select |#memory_int| |v_ULTIMATE.start_fabs_float_~#sf_u~0#1.base_12|) (_ bv0 32)))) (and (= (fp ((_ extract 31 31) v_arrayElimCell_1) ((_ extract 30 23) v_arrayElimCell_1) ((_ extract 22 0) v_arrayElimCell_1)) (fp.div currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)) (_ +zero 8 24))) (= (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0)) |ULTIMATE.start_isinf_float_~x#1|) (= (bvand (_ bv2147483647 32) v_arrayElimCell_1) .cse0)))) [2023-12-02 15:47:29,667 INFO L899 garLoopResultBuilder]: For program point L31-3(lines 31 35) no Hoare annotation was computed. [2023-12-02 15:47:29,668 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 55) no Hoare annotation was computed. [2023-12-02 15:47:29,668 INFO L899 garLoopResultBuilder]: For program point L15-1(lines 15 19) no Hoare annotation was computed. [2023-12-02 15:47:29,668 INFO L895 garLoopResultBuilder]: At program point L15-2(lines 15 19) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)) (_ +zero 8 24)) |ULTIMATE.start_fabs_float_~x#1|)) [2023-12-02 15:47:29,668 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 15:47:29,668 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 40 58) no Hoare annotation was computed. [2023-12-02 15:47:29,668 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 53) no Hoare annotation was computed. [2023-12-02 15:47:29,669 INFO L899 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2023-12-02 15:47:29,669 INFO L899 garLoopResultBuilder]: For program point L20(lines 20 24) no Hoare annotation was computed. [2023-12-02 15:47:29,669 INFO L895 garLoopResultBuilder]: At program point L20-1(lines 20 24) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)) (_ +zero 8 24)) |ULTIMATE.start_fabs_float_~x#1|)) (exists ((|v_ULTIMATE.start_fabs_float_~#gf_u~0#1.base_12| (_ BitVec 32)) (currentRoundingMode RoundingMode)) (let ((.cse0 (select (select |#memory_int| |v_ULTIMATE.start_fabs_float_~#gf_u~0#1.base_12|) (_ bv0 32)))) (and (= (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0)) (fp.div currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)) (_ +zero 8 24))) (= .cse0 |ULTIMATE.start_fabs_float_~ix~0#1|))))) [2023-12-02 15:47:29,669 INFO L899 garLoopResultBuilder]: For program point L20-2(lines 20 24) no Hoare annotation was computed. [2023-12-02 15:47:29,673 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-12-02 15:47:29,675 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 15:47:29,685 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists currentRoundingMode : FloatRoundingMode :: ~fp.div~32(currentRoundingMode, ~fp.neg~32(~to_fp~32(currentRoundingMode, 1.0)), ~Pluszero~32()) == ~x) could not be translated [2023-12-02 15:47:29,686 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists v_ULTIMATE.start_fabs_float_~#gf_u~0#1.base_12 : bv32, currentRoundingMode : FloatRoundingMode :: ~fp~32(#memory_int[v_ULTIMATE.start_fabs_float_~#gf_u~0#1.base_12][0bv32][31:31], #memory_int[v_ULTIMATE.start_fabs_float_~#gf_u~0#1.base_12][0bv32][30:23], #memory_int[v_ULTIMATE.start_fabs_float_~#gf_u~0#1.base_12][0bv32][22:0]) == ~fp.div~32(currentRoundingMode, ~fp.neg~32(~to_fp~32(currentRoundingMode, 1.0)), ~Pluszero~32()) && #memory_int[v_ULTIMATE.start_fabs_float_~#gf_u~0#1.base_12][0bv32] == ~ix~0) could not be translated [2023-12-02 15:47:29,687 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists v_arrayElimCell_1 : bv32, v_ULTIMATE.start_fabs_float_~#sf_u~0#1.base_12 : bv32, currentRoundingMode : FloatRoundingMode :: (~fp~32(v_arrayElimCell_1[31:31], v_arrayElimCell_1[30:23], v_arrayElimCell_1[22:0]) == ~fp.div~32(currentRoundingMode, ~fp.neg~32(~to_fp~32(currentRoundingMode, 1.0)), ~Pluszero~32()) && ~fp~32(#memory_int[v_ULTIMATE.start_fabs_float_~#sf_u~0#1.base_12][0bv32][31:31], #memory_int[v_ULTIMATE.start_fabs_float_~#sf_u~0#1.base_12][0bv32][30:23], #memory_int[v_ULTIMATE.start_fabs_float_~#sf_u~0#1.base_12][0bv32][22:0]) == ~x) && ~bvand~32(2147483647bv32, v_arrayElimCell_1) == #memory_int[v_ULTIMATE.start_fabs_float_~#sf_u~0#1.base_12][0bv32]) could not be translated [2023-12-02 15:47:29,688 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists currentRoundingMode : FloatRoundingMode :: ~fp.div~32(currentRoundingMode, ~fp.neg~32(~to_fp~32(currentRoundingMode, 1.0)), ~Pluszero~32()) == ~x) could not be translated [2023-12-02 15:47:29,688 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:47:29 BoogieIcfgContainer [2023-12-02 15:47:29,688 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 15:47:29,689 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 15:47:29,689 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 15:47:29,689 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 15:47:29,690 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:47:27" (3/4) ... [2023-12-02 15:47:29,692 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 15:47:29,699 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-12-02 15:47:29,699 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-12-02 15:47:29,699 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-12-02 15:47:29,700 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 15:47:29,767 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 15:47:29,767 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 15:47:29,767 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 15:47:29,768 INFO L158 Benchmark]: Toolchain (without parser) took 2658.57ms. Allocated memory is still 83.9MB. Free memory was 60.4MB in the beginning and 46.0MB in the end (delta: 14.4MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. [2023-12-02 15:47:29,768 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 60.8MB. Free memory is still 36.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:47:29,769 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.88ms. Allocated memory is still 83.9MB. Free memory was 60.1MB in the beginning and 48.8MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 15:47:29,769 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.30ms. Allocated memory is still 83.9MB. Free memory was 48.8MB in the beginning and 47.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 15:47:29,770 INFO L158 Benchmark]: Boogie Preprocessor took 37.83ms. Allocated memory is still 83.9MB. Free memory was 47.3MB in the beginning and 45.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 15:47:29,770 INFO L158 Benchmark]: RCFGBuilder took 351.02ms. Allocated memory is still 83.9MB. Free memory was 45.7MB in the beginning and 56.0MB in the end (delta: -10.3MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. [2023-12-02 15:47:29,770 INFO L158 Benchmark]: TraceAbstraction took 1868.67ms. Allocated memory is still 83.9MB. Free memory was 55.6MB in the beginning and 50.2MB in the end (delta: 5.4MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2023-12-02 15:47:29,771 INFO L158 Benchmark]: Witness Printer took 78.36ms. Allocated memory is still 83.9MB. Free memory was 50.2MB in the beginning and 46.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 15:47:29,773 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 60.8MB. Free memory is still 36.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 271.88ms. Allocated memory is still 83.9MB. Free memory was 60.1MB in the beginning and 48.8MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.30ms. Allocated memory is still 83.9MB. Free memory was 48.8MB in the beginning and 47.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.83ms. Allocated memory is still 83.9MB. Free memory was 47.3MB in the beginning and 45.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 351.02ms. Allocated memory is still 83.9MB. Free memory was 45.7MB in the beginning and 56.0MB in the end (delta: -10.3MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1868.67ms. Allocated memory is still 83.9MB. Free memory was 55.6MB in the beginning and 50.2MB in the end (delta: 5.4MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. * Witness Printer took 78.36ms. Allocated memory is still 83.9MB. Free memory was 50.2MB in the beginning and 46.0MB in the end (delta: 4.2MB). 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 :: ~fp.div~32(currentRoundingMode, ~fp.neg~32(~to_fp~32(currentRoundingMode, 1.0)), ~Pluszero~32()) == ~x) could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists v_ULTIMATE.start_fabs_float_~#gf_u~0#1.base_12 : bv32, currentRoundingMode : FloatRoundingMode :: ~fp~32(#memory_int[v_ULTIMATE.start_fabs_float_~#gf_u~0#1.base_12][0bv32][31:31], #memory_int[v_ULTIMATE.start_fabs_float_~#gf_u~0#1.base_12][0bv32][30:23], #memory_int[v_ULTIMATE.start_fabs_float_~#gf_u~0#1.base_12][0bv32][22:0]) == ~fp.div~32(currentRoundingMode, ~fp.neg~32(~to_fp~32(currentRoundingMode, 1.0)), ~Pluszero~32()) && #memory_int[v_ULTIMATE.start_fabs_float_~#gf_u~0#1.base_12][0bv32] == ~ix~0) could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists v_arrayElimCell_1 : bv32, v_ULTIMATE.start_fabs_float_~#sf_u~0#1.base_12 : bv32, currentRoundingMode : FloatRoundingMode :: (~fp~32(v_arrayElimCell_1[31:31], v_arrayElimCell_1[30:23], v_arrayElimCell_1[22:0]) == ~fp.div~32(currentRoundingMode, ~fp.neg~32(~to_fp~32(currentRoundingMode, 1.0)), ~Pluszero~32()) && ~fp~32(#memory_int[v_ULTIMATE.start_fabs_float_~#sf_u~0#1.base_12][0bv32][31:31], #memory_int[v_ULTIMATE.start_fabs_float_~#sf_u~0#1.base_12][0bv32][30:23], #memory_int[v_ULTIMATE.start_fabs_float_~#sf_u~0#1.base_12][0bv32][22:0]) == ~x) && ~bvand~32(2147483647bv32, v_arrayElimCell_1) == #memory_int[v_ULTIMATE.start_fabs_float_~#sf_u~0#1.base_12][0bv32]) could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists currentRoundingMode : FloatRoundingMode :: ~fp.div~32(currentRoundingMode, ~fp.neg~32(~to_fp~32(currentRoundingMode, 1.0)), ~Pluszero~32()) == ~x) 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: 53]: 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 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 38 IncrementalHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 12 mSDtfsCounter, 38 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 10, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 6 NumberOfFragments, 104 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 8 QuantifiedInterpolants, 310 SizeOfPredicates, 11 NumberOfNonLiveVariables, 89 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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: 20]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: null RESULT: Ultimate proved your program to be correct! [2023-12-02 15:47:29,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7949b1bd-c724-4013-ad95-d4c569d229a2/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE