./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/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_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/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_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/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 bafd616607c3b26e5c116d6e80df383a1448d022ecfba32980ae94deeb4f2706 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:07:16,122 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:07:16,184 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 18:07:16,188 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:07:16,189 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:07:16,210 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:07:16,211 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:07:16,212 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:07:16,212 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:07:16,213 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:07:16,213 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:07:16,214 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:07:16,214 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:07:16,215 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 18:07:16,215 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:07:16,216 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:07:16,216 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 18:07:16,217 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 18:07:16,217 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:07:16,218 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 18:07:16,218 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 18:07:16,219 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 18:07:16,219 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:07:16,220 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 18:07:16,220 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 18:07:16,229 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 18:07:16,229 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 18:07:16,230 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:07:16,230 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 18:07:16,230 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:07:16,231 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 18:07:16,231 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 18:07:16,231 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 18:07:16,232 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:07:16,232 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:07:16,232 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:07:16,232 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:07:16,233 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:07:16,233 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:07:16,233 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:07:16,233 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 18:07:16,234 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 18:07:16,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 18:07:16,234 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:07:16,234 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 18:07:16,235 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:07:16,235 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:07:16,235 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_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bafd616607c3b26e5c116d6e80df383a1448d022ecfba32980ae94deeb4f2706 [2023-12-02 18:07:16,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:07:16,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:07:16,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:07:16,501 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:07:16,501 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:07:16,503 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c [2023-12-02 18:07:19,306 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:07:19,477 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:07:19,478 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c [2023-12-02 18:07:19,485 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/bin/utaipan-verify-nQ1chXbOIh/data/7cd0e8726/14c9f319338d49a5a65126464376c77b/FLAG283176b00 [2023-12-02 18:07:19,498 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/bin/utaipan-verify-nQ1chXbOIh/data/7cd0e8726/14c9f319338d49a5a65126464376c77b [2023-12-02 18:07:19,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:07:19,502 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:07:19,503 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:07:19,503 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:07:19,508 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:07:19,508 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:07:19" (1/1) ... [2023-12-02 18:07:19,509 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1092cbf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:07:19, skipping insertion in model container [2023-12-02 18:07:19,509 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:07:19" (1/1) ... [2023-12-02 18:07:19,527 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:07:19,654 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_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c[380,393] [2023-12-02 18:07:19,658 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:07:19,669 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:07:19,682 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_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c[380,393] [2023-12-02 18:07:19,683 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:07:19,698 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:07:19,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:07:19 WrapperNode [2023-12-02 18:07:19,698 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:07:19,700 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:07:19,700 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:07:19,700 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:07:19,708 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:07:19" (1/1) ... [2023-12-02 18:07:19,714 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:07:19" (1/1) ... [2023-12-02 18:07:19,727 INFO L138 Inliner]: procedures = 11, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 17 [2023-12-02 18:07:19,728 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:07:19,728 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:07:19,729 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:07:19,729 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:07:19,738 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:07:19" (1/1) ... [2023-12-02 18:07:19,738 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:07:19" (1/1) ... [2023-12-02 18:07:19,739 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:07:19" (1/1) ... [2023-12-02 18:07:19,739 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:07:19" (1/1) ... [2023-12-02 18:07:19,743 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:07:19" (1/1) ... [2023-12-02 18:07:19,744 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:07:19" (1/1) ... [2023-12-02 18:07:19,745 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:07:19" (1/1) ... [2023-12-02 18:07:19,746 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:07:19" (1/1) ... [2023-12-02 18:07:19,747 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:07:19,748 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:07:19,748 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:07:19,748 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:07:19,749 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:07:19" (1/1) ... [2023-12-02 18:07:19,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:07:19,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:07:19,782 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:07:19,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:07:19,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:07:19,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:07:19,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:07:19,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 18:07:19,886 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:07:19,887 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:07:19,952 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:07:19,974 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:07:19,974 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 18:07:19,976 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:07:19 BoogieIcfgContainer [2023-12-02 18:07:19,976 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:07:19,979 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:07:19,979 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:07:19,983 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:07:19,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:07:19" (1/3) ... [2023-12-02 18:07:19,984 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53314605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:07:19, skipping insertion in model container [2023-12-02 18:07:19,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:07:19" (2/3) ... [2023-12-02 18:07:19,984 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53314605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:07:19, skipping insertion in model container [2023-12-02 18:07:19,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:07:19" (3/3) ... [2023-12-02 18:07:19,986 INFO L112 eAbstractionObserver]: Analyzing ICFG float-to-double2.c [2023-12-02 18:07:20,006 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:07:20,006 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 18:07:20,056 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:07:20,064 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;@6c9963b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:07:20,064 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 18:07:20,068 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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 18:07:20,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 18:07:20,074 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:07:20,075 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 18:07:20,075 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:07:20,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:07:20,081 INFO L85 PathProgramCache]: Analyzing trace with hash 44367, now seen corresponding path program 1 times [2023-12-02 18:07:20,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:07:20,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645793030] [2023-12-02 18:07:20,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:07:20,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:07:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 18:07:20,181 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 18:07:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 18:07:20,207 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 18:07:20,209 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 18:07:20,210 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 18:07:20,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 18:07:20,216 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 18:07:20,221 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 18:07:20,235 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 06:07:20 BoogieIcfgContainer [2023-12-02 18:07:20,235 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 18:07:20,236 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 18:07:20,236 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 18:07:20,236 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 18:07:20,237 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:07:19" (3/4) ... [2023-12-02 18:07:20,239 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 18:07:20,240 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 18:07:20,241 INFO L158 Benchmark]: Toolchain (without parser) took 739.40ms. Allocated memory is still 138.4MB. Free memory was 92.8MB in the beginning and 57.6MB in the end (delta: 35.1MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2023-12-02 18:07:20,242 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 138.4MB. Free memory is still 107.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 18:07:20,242 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.94ms. Allocated memory is still 138.4MB. Free memory was 92.8MB in the beginning and 82.1MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 18:07:20,243 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.24ms. Allocated memory is still 138.4MB. Free memory was 82.1MB in the beginning and 80.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 18:07:20,244 INFO L158 Benchmark]: Boogie Preprocessor took 18.98ms. Allocated memory is still 138.4MB. Free memory was 80.7MB in the beginning and 79.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 18:07:20,244 INFO L158 Benchmark]: RCFGBuilder took 228.03ms. Allocated memory is still 138.4MB. Free memory was 79.7MB in the beginning and 70.9MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-12-02 18:07:20,245 INFO L158 Benchmark]: TraceAbstraction took 256.01ms. Allocated memory is still 138.4MB. Free memory was 70.2MB in the beginning and 57.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 18:07:20,245 INFO L158 Benchmark]: Witness Printer took 4.48ms. Allocated memory is still 138.4MB. Free memory is still 57.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 18:07:20,249 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 138.4MB. Free memory is still 107.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 195.94ms. Allocated memory is still 138.4MB. Free memory was 92.8MB in the beginning and 82.1MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.24ms. Allocated memory is still 138.4MB. Free memory was 82.1MB in the beginning and 80.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.98ms. Allocated memory is still 138.4MB. Free memory was 80.7MB in the beginning and 79.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 228.03ms. Allocated memory is still 138.4MB. Free memory was 79.7MB in the beginning and 70.9MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 256.01ms. Allocated memory is still 138.4MB. Free memory was 70.2MB in the beginning and 57.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 4.48ms. Allocated memory is still 138.4MB. Free memory is still 57.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 11]: 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 someBinaryDOUBLEComparisonOperation at line 11, overapproximation of someUnaryDOUBLEoperation at line 8, overapproximation of someUnaryFLOAToperation at line 7. Possible FailurePath: [L7] float f = -0x1.0p-127f; [L8] double d = -0x1.0p-127; [L9] double fp = (double)f; VAL [f=53, fp=53] [L11] COND TRUE !(d == fp) VAL [f=53, fp=53] [L11] reach_error() VAL [f=53, fp=53] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-12-02 18:07:20,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/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_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/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_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/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 bafd616607c3b26e5c116d6e80df383a1448d022ecfba32980ae94deeb4f2706 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:07:22,237 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:07:22,304 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 18:07:22,310 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:07:22,310 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:07:22,337 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:07:22,337 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:07:22,338 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:07:22,339 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:07:22,339 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:07:22,340 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:07:22,340 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:07:22,341 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:07:22,341 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:07:22,342 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:07:22,342 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:07:22,344 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:07:22,344 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 18:07:22,344 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 18:07:22,345 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 18:07:22,345 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:07:22,346 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 18:07:22,347 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:07:22,347 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 18:07:22,347 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 18:07:22,348 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 18:07:22,348 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 18:07:22,348 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 18:07:22,349 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 18:07:22,349 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:07:22,349 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:07:22,350 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 18:07:22,350 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:07:22,350 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:07:22,350 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:07:22,351 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:07:22,351 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:07:22,351 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 18:07:22,351 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 18:07:22,351 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 18:07:22,352 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:07:22,352 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 18:07:22,352 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:07:22,352 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:07:22,352 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_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bafd616607c3b26e5c116d6e80df383a1448d022ecfba32980ae94deeb4f2706 [2023-12-02 18:07:22,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:07:22,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:07:22,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:07:22,696 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:07:22,697 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:07:22,698 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c [2023-12-02 18:07:25,492 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:07:25,680 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:07:25,680 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c [2023-12-02 18:07:25,688 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/bin/utaipan-verify-nQ1chXbOIh/data/5e7936a9e/a3b5f5ad27c04572ab6daceb140e4959/FLAG95cd20e36 [2023-12-02 18:07:25,703 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/bin/utaipan-verify-nQ1chXbOIh/data/5e7936a9e/a3b5f5ad27c04572ab6daceb140e4959 [2023-12-02 18:07:25,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:07:25,707 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:07:25,709 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:07:25,709 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:07:25,714 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:07:25,715 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:07:25" (1/1) ... [2023-12-02 18:07:25,716 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53bc0c1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:07:25, skipping insertion in model container [2023-12-02 18:07:25,716 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:07:25" (1/1) ... [2023-12-02 18:07:25,735 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:07:25,901 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_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c[380,393] [2023-12-02 18:07:25,907 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:07:25,924 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:07:25,943 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_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c[380,393] [2023-12-02 18:07:25,944 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:07:25,960 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:07:25,960 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:07:25 WrapperNode [2023-12-02 18:07:25,961 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:07:25,962 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:07:25,962 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:07:25,962 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:07:25,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:07:25" (1/1) ... [2023-12-02 18:07:25,979 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:07:25" (1/1) ... [2023-12-02 18:07:25,996 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2023-12-02 18:07:25,997 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:07:25,998 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:07:25,998 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:07:25,998 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:07:26,007 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:07:25" (1/1) ... [2023-12-02 18:07:26,007 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:07:25" (1/1) ... [2023-12-02 18:07:26,010 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:07:25" (1/1) ... [2023-12-02 18:07:26,010 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:07:25" (1/1) ... [2023-12-02 18:07:26,016 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:07:25" (1/1) ... [2023-12-02 18:07:26,018 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:07:25" (1/1) ... [2023-12-02 18:07:26,020 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:07:25" (1/1) ... [2023-12-02 18:07:26,021 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:07:25" (1/1) ... [2023-12-02 18:07:26,024 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:07:26,025 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:07:26,025 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:07:26,025 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:07:26,026 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:07:25" (1/1) ... [2023-12-02 18:07:26,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:07:26,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:07:26,056 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:07:26,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:07:26,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:07:26,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:07:26,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:07:26,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 18:07:26,176 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:07:26,178 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:07:26,321 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:07:26,350 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:07:26,351 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 18:07:26,351 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:07:26 BoogieIcfgContainer [2023-12-02 18:07:26,351 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:07:26,354 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:07:26,354 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:07:26,357 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:07:26,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:07:25" (1/3) ... [2023-12-02 18:07:26,358 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68baa277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:07:26, skipping insertion in model container [2023-12-02 18:07:26,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:07:25" (2/3) ... [2023-12-02 18:07:26,359 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68baa277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:07:26, skipping insertion in model container [2023-12-02 18:07:26,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:07:26" (3/3) ... [2023-12-02 18:07:26,360 INFO L112 eAbstractionObserver]: Analyzing ICFG float-to-double2.c [2023-12-02 18:07:26,379 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:07:26,379 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 18:07:26,425 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:07:26,433 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;@17f8b82, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:07:26,433 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 18:07:26,437 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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 18:07:26,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 18:07:26,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:07:26,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 18:07:26,445 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:07:26,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:07:26,450 INFO L85 PathProgramCache]: Analyzing trace with hash 44367, now seen corresponding path program 1 times [2023-12-02 18:07:26,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:07:26,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [705710381] [2023-12-02 18:07:26,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:07:26,464 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 18:07:26,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:07:26,465 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/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 18:07:26,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/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 18:07:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:07:26,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:07:26,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:07:26,659 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 18:07:26,659 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:07:26,660 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:07:26,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [705710381] [2023-12-02 18:07:26,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [705710381] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:07:26,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:07:26,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:07:26,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722386503] [2023-12-02 18:07:26,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:07:26,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:07:26,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:07:26,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:07:26,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:07:26,699 INFO L87 Difference]: Start difference. First operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 18:07:26,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:07:26,731 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2023-12-02 18:07:26,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:07:26,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2023-12-02 18:07:26,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:07:26,740 INFO L225 Difference]: With dead ends: 8 [2023-12-02 18:07:26,740 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 18:07:26,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:07:26,746 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 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 18:07:26,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 18:07:26,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 18:07:26,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 18:07:26,771 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 18:07:26,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 18:07:26,772 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 3 [2023-12-02 18:07:26,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:07:26,773 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 18:07:26,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 18:07:26,773 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 18:07:26,773 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 18:07:26,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 18:07:26,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/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 18:07:26,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/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 18:07:26,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 18:07:26,982 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 18:07:26,983 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2023-12-02 18:07:26,983 INFO L899 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2023-12-02 18:07:26,983 INFO L899 garLoopResultBuilder]: For program point L11-1(line 11) no Hoare annotation was computed. [2023-12-02 18:07:26,983 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 18:07:26,983 INFO L899 garLoopResultBuilder]: For program point L11-3(line 11) no Hoare annotation was computed. [2023-12-02 18:07:26,987 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 18:07:26,989 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 18:07:26,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 06:07:26 BoogieIcfgContainer [2023-12-02 18:07:26,995 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 18:07:26,995 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 18:07:26,996 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 18:07:26,996 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 18:07:26,996 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:07:26" (3/4) ... [2023-12-02 18:07:26,998 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 18:07:27,003 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-12-02 18:07:27,004 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-12-02 18:07:27,004 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-12-02 18:07:27,004 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 18:07:27,084 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 18:07:27,084 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 18:07:27,084 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 18:07:27,085 INFO L158 Benchmark]: Toolchain (without parser) took 1377.76ms. Allocated memory is still 90.2MB. Free memory was 66.9MB in the beginning and 38.8MB in the end (delta: 28.1MB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. [2023-12-02 18:07:27,085 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 71.3MB. Free memory was 47.9MB in the beginning and 47.8MB in the end (delta: 111.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 18:07:27,086 INFO L158 Benchmark]: CACSL2BoogieTranslator took 252.34ms. Allocated memory is still 90.2MB. Free memory was 66.7MB in the beginning and 55.5MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 18:07:27,086 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.35ms. Allocated memory is still 90.2MB. Free memory was 55.5MB in the beginning and 54.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 18:07:27,087 INFO L158 Benchmark]: Boogie Preprocessor took 26.50ms. Allocated memory is still 90.2MB. Free memory was 54.0MB in the beginning and 52.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 18:07:27,087 INFO L158 Benchmark]: RCFGBuilder took 326.23ms. Allocated memory is still 90.2MB. Free memory was 52.8MB in the beginning and 64.4MB in the end (delta: -11.7MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2023-12-02 18:07:27,088 INFO L158 Benchmark]: TraceAbstraction took 640.99ms. Allocated memory is still 90.2MB. Free memory was 63.9MB in the beginning and 42.7MB in the end (delta: 21.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 18:07:27,088 INFO L158 Benchmark]: Witness Printer took 88.83ms. Allocated memory is still 90.2MB. Free memory was 42.7MB in the beginning and 38.8MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 18:07:27,091 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 71.3MB. Free memory was 47.9MB in the beginning and 47.8MB in the end (delta: 111.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 252.34ms. Allocated memory is still 90.2MB. Free memory was 66.7MB in the beginning and 55.5MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.35ms. Allocated memory is still 90.2MB. Free memory was 55.5MB in the beginning and 54.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.50ms. Allocated memory is still 90.2MB. Free memory was 54.0MB in the beginning and 52.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 326.23ms. Allocated memory is still 90.2MB. Free memory was 52.8MB in the beginning and 64.4MB in the end (delta: -11.7MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. * TraceAbstraction took 640.99ms. Allocated memory is still 90.2MB. Free memory was 63.9MB in the beginning and 42.7MB in the end (delta: 21.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 88.83ms. Allocated memory is still 90.2MB. Free memory was 42.7MB in the beginning and 38.8MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. 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 - PositiveResult [Line: 11]: 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, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 0 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, 0 mSDtfsCounter, 4 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 3, 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: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 2 ConstructedInterpolants, 1 QuantifiedInterpolants, 17 SizeOfPredicates, 4 NumberOfNonLiveVariables, 18 ConjunctsInSsa, 4 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-02 18:07:27,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d7cec8-210f-446b-a0a7-1dcab89aabf8/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