./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4582c3eb38d182065b024eaa1ecbc8cf3ce1cd8f100c8eebac06484d412900d6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:28:32,763 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:28:32,912 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:28:32,924 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:28:32,925 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:28:32,967 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:28:32,968 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:28:32,969 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:28:32,970 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:28:32,970 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:28:32,971 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:28:32,971 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:28:32,972 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:28:32,973 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:28:32,973 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:28:32,974 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:28:32,975 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:28:32,975 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:28:32,976 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:28:32,977 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:28:32,977 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:28:32,978 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:28:32,979 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:28:32,980 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:28:32,980 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:28:32,981 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:28:32,981 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:28:32,982 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:28:32,982 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:28:32,983 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:28:32,984 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:28:32,984 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:28:32,985 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:28:32,985 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:28:32,986 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:28:32,986 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:28:32,987 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:28:32,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:28:32,987 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:28:32,988 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:28:32,988 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:28:32,989 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:28:32,989 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:28:32,990 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:28:32,990 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:28:32,991 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:28:32,991 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:28:32,991 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_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4582c3eb38d182065b024eaa1ecbc8cf3ce1cd8f100c8eebac06484d412900d6 [2023-11-23 21:28:33,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:28:33,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:28:33,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:28:33,396 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:28:33,397 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:28:33,398 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c [2023-11-23 21:28:36,484 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:28:36,671 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:28:36,672 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c [2023-11-23 21:28:36,680 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/data/b8c8c3a8b/251210cf43884f8aafaaaa72f0f01657/FLAG8874596ab [2023-11-23 21:28:36,697 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/data/b8c8c3a8b/251210cf43884f8aafaaaa72f0f01657 [2023-11-23 21:28:36,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:28:36,711 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:28:36,713 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:28:36,713 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:28:36,719 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:28:36,720 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:28:36" (1/1) ... [2023-11-23 21:28:36,721 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b0a3532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:36, skipping insertion in model container [2023-11-23 21:28:36,722 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:28:36" (1/1) ... [2023-11-23 21:28:36,749 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:28:37,026 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_5767d87c-3d46-406e-b577-393189ae2ad1/sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c[699,712] [2023-11-23 21:28:37,034 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:28:37,046 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:28:37,065 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_5767d87c-3d46-406e-b577-393189ae2ad1/sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c[699,712] [2023-11-23 21:28:37,066 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:28:37,084 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:28:37,085 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:37 WrapperNode [2023-11-23 21:28:37,085 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:28:37,086 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:28:37,087 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:28:37,087 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:28:37,096 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:37" (1/1) ... [2023-11-23 21:28:37,104 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:37" (1/1) ... [2023-11-23 21:28:37,127 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 28 [2023-11-23 21:28:37,127 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:28:37,128 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:28:37,128 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:28:37,128 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:28:37,139 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:37" (1/1) ... [2023-11-23 21:28:37,139 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:37" (1/1) ... [2023-11-23 21:28:37,141 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:37" (1/1) ... [2023-11-23 21:28:37,142 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:37" (1/1) ... [2023-11-23 21:28:37,151 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:37" (1/1) ... [2023-11-23 21:28:37,153 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:37" (1/1) ... [2023-11-23 21:28:37,160 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:37" (1/1) ... [2023-11-23 21:28:37,161 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:37" (1/1) ... [2023-11-23 21:28:37,162 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:28:37,163 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:28:37,163 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:28:37,164 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:28:37,165 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:37" (1/1) ... [2023-11-23 21:28:37,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:28:37,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:28:37,209 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:28:37,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:28:37,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:28:37,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:28:37,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:28:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:28:37,344 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:28:37,347 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:28:37,479 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:28:37,504 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:28:37,504 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:28:37,505 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:28:37 BoogieIcfgContainer [2023-11-23 21:28:37,506 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:28:37,508 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:28:37,509 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:28:37,513 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:28:37,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:28:36" (1/3) ... [2023-11-23 21:28:37,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e2c2cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:28:37, skipping insertion in model container [2023-11-23 21:28:37,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:37" (2/3) ... [2023-11-23 21:28:37,515 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e2c2cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:28:37, skipping insertion in model container [2023-11-23 21:28:37,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:28:37" (3/3) ... [2023-11-23 21:28:37,517 INFO L112 eAbstractionObserver]: Analyzing ICFG Float_div_bad.i.p+cfa-reducer.c [2023-11-23 21:28:37,538 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:28:37,538 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:28:37,591 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:28:37,598 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;@230fb2c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:28:37,598 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:28:37,602 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 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) [2023-11-23 21:28:37,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 21:28:37,607 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:28:37,608 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 21:28:37,608 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:28:37,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:28:37,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1497591, now seen corresponding path program 1 times [2023-11-23 21:28:37,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:28:37,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65130564] [2023-11-23 21:28:37,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:37,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:28:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:28:37,778 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:28:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:28:37,831 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:28:37,834 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:28:37,835 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:28:37,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:28:37,843 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:28:37,847 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:28:37,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:28:37 BoogieIcfgContainer [2023-11-23 21:28:37,874 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:28:37,877 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:28:37,877 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:28:37,877 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:28:37,878 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:28:37" (3/4) ... [2023-11-23 21:28:37,884 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:28:37,886 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:28:37,888 INFO L158 Benchmark]: Toolchain (without parser) took 1176.61ms. Allocated memory is still 163.6MB. Free memory was 124.4MB in the beginning and 103.7MB in the end (delta: 20.7MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. [2023-11-23 21:28:37,888 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 123.7MB. Free memory is still 89.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:28:37,889 INFO L158 Benchmark]: CACSL2BoogieTranslator took 372.65ms. Allocated memory is still 163.6MB. Free memory was 124.4MB in the beginning and 129.8MB in the end (delta: -5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-23 21:28:37,890 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.00ms. Allocated memory is still 163.6MB. Free memory was 129.5MB in the beginning and 128.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:28:37,891 INFO L158 Benchmark]: Boogie Preprocessor took 34.50ms. Allocated memory is still 163.6MB. Free memory was 128.1MB in the beginning and 127.4MB in the end (delta: 720.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:28:37,897 INFO L158 Benchmark]: RCFGBuilder took 342.52ms. Allocated memory is still 163.6MB. Free memory was 127.1MB in the beginning and 118.0MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-23 21:28:37,898 INFO L158 Benchmark]: TraceAbstraction took 366.21ms. Allocated memory is still 163.6MB. Free memory was 117.4MB in the beginning and 104.3MB in the end (delta: 13.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 21:28:37,899 INFO L158 Benchmark]: Witness Printer took 9.52ms. Allocated memory is still 163.6MB. Free memory was 104.3MB in the beginning and 104.0MB in the end (delta: 314.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:28:37,908 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 123.7MB. Free memory is still 89.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 372.65ms. Allocated memory is still 163.6MB. Free memory was 124.4MB in the beginning and 129.8MB in the end (delta: -5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.00ms. Allocated memory is still 163.6MB. Free memory was 129.5MB in the beginning and 128.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 34.50ms. Allocated memory is still 163.6MB. Free memory was 128.1MB in the beginning and 127.4MB in the end (delta: 720.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 342.52ms. Allocated memory is still 163.6MB. Free memory was 127.1MB in the beginning and 118.0MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 366.21ms. Allocated memory is still 163.6MB. Free memory was 117.4MB in the beginning and 104.3MB in the end (delta: 13.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 9.52ms. Allocated memory is still 163.6MB. Free memory was 104.3MB in the beginning and 104.0MB in the end (delta: 314.3kB). 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: 27]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 12, overapproximation of someBinaryArithmeticDOUBLEoperation at line 10. Possible FailurePath: [L1] int __return_main; [L9] float main__x = 1.0; [L10] float main__x1 = main__x / 1.600000023841858; VAL [__return_main=0, main__x=1] [L12] COND FALSE !(main__x1 != main__x) [L21] int __tmp_1; [L22] __tmp_1 = main__x == 0 [L23] int __VERIFIER_assert__cond; [L24] __VERIFIER_assert__cond = __tmp_1 VAL [__VERIFIER_assert__cond=0, __return_main=0, __tmp_1=0, main__x=1] [L25] COND TRUE __VERIFIER_assert__cond == 0 VAL [__VERIFIER_assert__cond=0, __return_main=0, __tmp_1=0, main__x=1] [L27] reach_error() VAL [__VERIFIER_assert__cond=0, __return_main=0, __tmp_1=0, main__x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, 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=7occurred 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, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 21:28:37,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4582c3eb38d182065b024eaa1ecbc8cf3ce1cd8f100c8eebac06484d412900d6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:28:40,542 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:28:40,670 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-23 21:28:40,680 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:28:40,681 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:28:40,730 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:28:40,731 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:28:40,731 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:28:40,732 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:28:40,733 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:28:40,733 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:28:40,734 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:28:40,734 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:28:40,735 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:28:40,735 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:28:40,736 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:28:40,737 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:28:40,737 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:28:40,738 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:28:40,738 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:28:40,738 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:28:40,739 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:28:40,739 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:28:40,740 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:28:40,740 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:28:40,741 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:28:40,741 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:28:40,741 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:28:40,742 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:28:40,742 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:28:40,744 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:28:40,744 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:28:40,744 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:28:40,744 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:28:40,745 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:28:40,745 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:28:40,745 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:28:40,745 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:28:40,746 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:28:40,747 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:28:40,747 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:28:40,747 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:28:40,748 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:28:40,748 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:28:40,748 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_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4582c3eb38d182065b024eaa1ecbc8cf3ce1cd8f100c8eebac06484d412900d6 [2023-11-23 21:28:41,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:28:41,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:28:41,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:28:41,173 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:28:41,173 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:28:41,175 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c [2023-11-23 21:28:44,341 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:28:44,618 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:28:44,619 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c [2023-11-23 21:28:44,627 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/data/e31b75112/c87cdcf204dc4a8eb469d4b06e37d2e5/FLAGbf2ba86e7 [2023-11-23 21:28:44,643 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/data/e31b75112/c87cdcf204dc4a8eb469d4b06e37d2e5 [2023-11-23 21:28:44,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:28:44,648 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:28:44,650 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:28:44,650 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:28:44,656 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:28:44,657 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:28:44" (1/1) ... [2023-11-23 21:28:44,659 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37a80bd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:44, skipping insertion in model container [2023-11-23 21:28:44,659 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:28:44" (1/1) ... [2023-11-23 21:28:44,681 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:28:44,851 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_5767d87c-3d46-406e-b577-393189ae2ad1/sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c[699,712] [2023-11-23 21:28:44,858 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:28:44,877 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:28:44,896 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_5767d87c-3d46-406e-b577-393189ae2ad1/sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c[699,712] [2023-11-23 21:28:44,897 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:28:44,923 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:28:44,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:44 WrapperNode [2023-11-23 21:28:44,924 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:28:44,930 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:28:44,931 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:28:44,931 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:28:44,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:44" (1/1) ... [2023-11-23 21:28:44,954 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:44" (1/1) ... [2023-11-23 21:28:44,975 INFO L138 Inliner]: procedures = 13, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2023-11-23 21:28:44,976 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:28:44,977 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:28:44,978 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:28:44,978 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:28:44,987 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:44" (1/1) ... [2023-11-23 21:28:44,988 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:44" (1/1) ... [2023-11-23 21:28:45,000 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:44" (1/1) ... [2023-11-23 21:28:45,001 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:44" (1/1) ... [2023-11-23 21:28:45,017 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:44" (1/1) ... [2023-11-23 21:28:45,019 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:44" (1/1) ... [2023-11-23 21:28:45,026 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:44" (1/1) ... [2023-11-23 21:28:45,027 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:44" (1/1) ... [2023-11-23 21:28:45,030 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:28:45,031 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:28:45,031 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:28:45,031 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:28:45,032 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:44" (1/1) ... [2023-11-23 21:28:45,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:28:45,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:28:45,077 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:28:45,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:28:45,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:28:45,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:28:45,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:28:45,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:28:45,211 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:28:45,214 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:28:49,592 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:28:49,626 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:28:49,631 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:28:49,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:28:49 BoogieIcfgContainer [2023-11-23 21:28:49,632 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:28:49,636 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:28:49,638 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:28:49,642 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:28:49,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:28:44" (1/3) ... [2023-11-23 21:28:49,644 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b360a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:28:49, skipping insertion in model container [2023-11-23 21:28:49,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:44" (2/3) ... [2023-11-23 21:28:49,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b360a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:28:49, skipping insertion in model container [2023-11-23 21:28:49,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:28:49" (3/3) ... [2023-11-23 21:28:49,649 INFO L112 eAbstractionObserver]: Analyzing ICFG Float_div_bad.i.p+cfa-reducer.c [2023-11-23 21:28:49,675 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:28:49,676 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:28:49,752 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:28:49,761 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;@9bff8a6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:28:49,762 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:28:49,768 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 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) [2023-11-23 21:28:49,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 21:28:49,775 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:28:49,776 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 21:28:49,779 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:28:49,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:28:49,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1497591, now seen corresponding path program 1 times [2023-11-23 21:28:49,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:28:49,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974803626] [2023-11-23 21:28:49,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:49,828 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:28:49,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:28:49,847 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:28:49,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-23 21:28:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:28:50,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:28:50,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:28:55,439 WARN L876 $PredicateComparison]: unable to prove that (and (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) |c_ULTIMATE.start_main_~main__x~0#1|) (= |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 8 24) roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven |c_ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) roundNearestTiesToEven (/ 800000011920929.0 500000000000000.0)))))) is different from true [2023-11-23 21:28:55,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:28:55,470 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:28:55,471 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:28:55,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974803626] [2023-11-23 21:28:55,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974803626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:28:55,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:28:55,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:28:55,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191966913] [2023-11-23 21:28:55,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:28:55,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:28:55,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:28:55,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:28:55,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=2, Unknown=1, NotChecked=0, Total=6 [2023-11-23 21:28:55,517 INFO L87 Difference]: Start difference. First operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 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) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:28:55,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:28:55,559 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2023-11-23 21:28:55,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:28:55,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2023-11-23 21:28:55,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:28:55,570 INFO L225 Difference]: With dead ends: 13 [2023-11-23 21:28:55,571 INFO L226 Difference]: Without dead ends: 6 [2023-11-23 21:28:55,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3, Invalid=2, Unknown=1, NotChecked=0, Total=6 [2023-11-23 21:28:55,582 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:28:55,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 8 Unchecked, 0.0s Time] [2023-11-23 21:28:55,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2023-11-23 21:28:55,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2023-11-23 21:28:55,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.2) 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) [2023-11-23 21:28:55,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2023-11-23 21:28:55,616 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2023-11-23 21:28:55,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:28:55,616 INFO L495 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2023-11-23 21:28:55,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:28:55,617 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2023-11-23 21:28:55,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-23 21:28:55,617 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:28:55,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 21:28:55,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:28:55,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:28:55,837 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:28:55,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:28:55,838 INFO L85 PathProgramCache]: Analyzing trace with hash 46362837, now seen corresponding path program 1 times [2023-11-23 21:28:55,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:28:55,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1330554903] [2023-11-23 21:28:55,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:55,839 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:28:55,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:28:55,841 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:28:55,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-23 21:28:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:28:57,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:28:57,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:29:07,189 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 800000011920929.0 500000000000000.0)))) (and (= ((_ to_fp 8 24) roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) .cse0)) |c_ULTIMATE.start_main_~main__x~0#1|) (= |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 8 24) roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven |c_ULTIMATE.start_main_~main__x~0#1|) .cse0))))) is different from true [2023-11-23 21:29:07,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-23 21:29:07,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:29:15,654 WARN L854 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1|) ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) |c_ULTIMATE.start_main_~main__x1~0#1|)) is different from false [2023-11-23 21:29:17,750 WARN L876 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1|) ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) |c_ULTIMATE.start_main_~main__x1~0#1|)) is different from true [2023-11-23 21:29:17,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-23 21:29:17,751 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:29:17,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1330554903] [2023-11-23 21:29:17,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1330554903] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:29:17,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1535634664] [2023-11-23 21:29:17,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:17,752 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:29:17,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:29:17,761 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:29:17,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-23 21:29:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:19,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:29:19,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:29:24,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-23 21:29:24,768 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:29:28,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-23 21:29:28,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1535634664] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:29:28,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762460490] [2023-11-23 21:29:28,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:28,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:29:28,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:29:28,987 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:29:28,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5767d87c-3d46-406e-b577-393189ae2ad1/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process