./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/filter2_set.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_a4199e1f-753f-4877-9cd9-451f60141945/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4199e1f-753f-4877-9cd9-451f60141945/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4199e1f-753f-4877-9cd9-451f60141945/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4199e1f-753f-4877-9cd9-451f60141945/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/filter2_set.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4199e1f-753f-4877-9cd9-451f60141945/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4199e1f-753f-4877-9cd9-451f60141945/bin/utaipan-verify-QoSU8krkJ5 --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 1052e6ec9925823ba5a2ccaaebf89a3336e5de0f5b82a0218158837daebc1dd1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:46:08,787 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:46:08,927 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4199e1f-753f-4877-9cd9-451f60141945/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-21 19:46:08,934 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:46:08,935 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:46:08,966 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:46:08,967 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:46:08,968 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:46:08,969 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:46:08,970 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:46:08,971 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:46:08,971 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:46:08,972 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:46:08,973 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:46:08,974 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:46:08,975 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:46:08,975 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:46:08,976 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:46:08,977 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:46:08,978 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:46:08,979 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:46:08,980 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:46:08,981 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:46:08,982 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:46:08,983 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 19:46:08,984 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:46:08,985 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 19:46:08,986 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:46:08,986 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:46:08,987 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:46:08,987 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:46:08,988 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 19:46:08,989 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:46:08,989 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:46:08,989 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:46:08,990 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:46:08,990 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:46:08,991 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:46:08,991 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:46:08,992 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:46:08,992 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:46:08,992 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:46:08,993 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:46:08,993 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:46:08,994 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:46:08,994 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:46:08,994 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:46:08,995 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_a4199e1f-753f-4877-9cd9-451f60141945/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4199e1f-753f-4877-9cd9-451f60141945/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1052e6ec9925823ba5a2ccaaebf89a3336e5de0f5b82a0218158837daebc1dd1 [2023-11-21 19:46:09,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:46:09,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:46:09,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:46:09,429 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:46:09,432 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:46:09,434 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4199e1f-753f-4877-9cd9-451f60141945/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/float-benchs/filter2_set.c [2023-11-21 19:46:13,014 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:46:13,258 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:46:13,259 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4199e1f-753f-4877-9cd9-451f60141945/sv-benchmarks/c/float-benchs/filter2_set.c [2023-11-21 19:46:13,267 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4199e1f-753f-4877-9cd9-451f60141945/bin/utaipan-verify-QoSU8krkJ5/data/ca9409571/e60d40d0664b49418ffa63c7a94081c1/FLAGc14c9119e [2023-11-21 19:46:13,284 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4199e1f-753f-4877-9cd9-451f60141945/bin/utaipan-verify-QoSU8krkJ5/data/ca9409571/e60d40d0664b49418ffa63c7a94081c1 [2023-11-21 19:46:13,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:46:13,289 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:46:13,290 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:46:13,291 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:46:13,297 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:46:13,298 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:46:13" (1/1) ... [2023-11-21 19:46:13,299 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a36fff9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:13, skipping insertion in model container [2023-11-21 19:46:13,300 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:46:13" (1/1) ... [2023-11-21 19:46:13,325 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:46:13,562 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_a4199e1f-753f-4877-9cd9-451f60141945/sv-benchmarks/c/float-benchs/filter2_set.c[664,677] [2023-11-21 19:46:13,588 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:46:13,602 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:46:13,623 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_a4199e1f-753f-4877-9cd9-451f60141945/sv-benchmarks/c/float-benchs/filter2_set.c[664,677] [2023-11-21 19:46:13,654 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:46:13,676 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:46:13,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:13 WrapperNode [2023-11-21 19:46:13,676 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:46:13,678 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:46:13,678 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:46:13,678 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:46:13,688 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:13" (1/1) ... [2023-11-21 19:46:13,697 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:13" (1/1) ... [2023-11-21 19:46:13,737 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 77 [2023-11-21 19:46:13,738 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:46:13,739 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:46:13,739 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:46:13,740 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:46:13,750 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:13" (1/1) ... [2023-11-21 19:46:13,751 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:13" (1/1) ... [2023-11-21 19:46:13,753 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:13" (1/1) ... [2023-11-21 19:46:13,753 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:13" (1/1) ... [2023-11-21 19:46:13,759 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:13" (1/1) ... [2023-11-21 19:46:13,763 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:13" (1/1) ... [2023-11-21 19:46:13,765 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:13" (1/1) ... [2023-11-21 19:46:13,766 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:13" (1/1) ... [2023-11-21 19:46:13,769 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:46:13,770 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:46:13,771 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:46:13,771 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:46:13,772 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:13" (1/1) ... [2023-11-21 19:46:13,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:46:13,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4199e1f-753f-4877-9cd9-451f60141945/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:46:13,815 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4199e1f-753f-4877-9cd9-451f60141945/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:46:13,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4199e1f-753f-4877-9cd9-451f60141945/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:46:13,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:46:13,861 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 19:46:13,861 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 19:46:13,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:46:13,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:46:13,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:46:13,963 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:46:13,965 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:46:14,186 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:46:14,219 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:46:14,219 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 19:46:14,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:46:14 BoogieIcfgContainer [2023-11-21 19:46:14,221 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:46:14,223 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:46:14,223 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:46:14,227 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:46:14,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:46:13" (1/3) ... [2023-11-21 19:46:14,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@508c412d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:46:14, skipping insertion in model container [2023-11-21 19:46:14,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:13" (2/3) ... [2023-11-21 19:46:14,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@508c412d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:46:14, skipping insertion in model container [2023-11-21 19:46:14,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:46:14" (3/3) ... [2023-11-21 19:46:14,235 INFO L112 eAbstractionObserver]: Analyzing ICFG filter2_set.c [2023-11-21 19:46:14,256 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:46:14,257 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 19:46:14,298 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:46:14,305 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;@76c2a239, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:46:14,306 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 19:46:14,309 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-21 19:46:14,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-21 19:46:14,316 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:46:14,317 INFO L195 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:46:14,317 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:46:14,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:46:14,322 INFO L85 PathProgramCache]: Analyzing trace with hash -356154640, now seen corresponding path program 1 times [2023-11-21 19:46:14,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:46:14,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69097042] [2023-11-21 19:46:14,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:46:14,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:46:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 19:46:14,574 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 19:46:14,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 19:46:14,691 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-21 19:46:14,696 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 19:46:14,698 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-21 19:46:14,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 19:46:14,704 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-21 19:46:14,710 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 19:46:14,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 07:46:14 BoogieIcfgContainer [2023-11-21 19:46:14,748 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 19:46:14,749 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 19:46:14,750 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 19:46:14,750 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 19:46:14,750 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:46:14" (3/4) ... [2023-11-21 19:46:14,752 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 19:46:14,754 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 19:46:14,755 INFO L158 Benchmark]: Toolchain (without parser) took 1466.05ms. Allocated memory is still 161.5MB. Free memory was 122.5MB in the beginning and 108.9MB in the end (delta: 13.6MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. [2023-11-21 19:46:14,756 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 107.0MB. Free memory is still 80.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:46:14,757 INFO L158 Benchmark]: CACSL2BoogieTranslator took 386.41ms. Allocated memory is still 161.5MB. Free memory was 122.5MB in the beginning and 111.1MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-21 19:46:14,758 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.76ms. Allocated memory is still 161.5MB. Free memory was 111.1MB in the beginning and 109.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 19:46:14,759 INFO L158 Benchmark]: Boogie Preprocessor took 30.32ms. Allocated memory is still 161.5MB. Free memory was 109.8MB in the beginning and 108.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:46:14,764 INFO L158 Benchmark]: RCFGBuilder took 450.96ms. Allocated memory is still 161.5MB. Free memory was 108.6MB in the beginning and 126.2MB in the end (delta: -17.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-21 19:46:14,764 INFO L158 Benchmark]: TraceAbstraction took 524.43ms. Allocated memory is still 161.5MB. Free memory was 125.7MB in the beginning and 109.5MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-21 19:46:14,766 INFO L158 Benchmark]: Witness Printer took 4.18ms. Allocated memory is still 161.5MB. Free memory is still 108.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:46:14,772 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 107.0MB. Free memory is still 80.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 386.41ms. Allocated memory is still 161.5MB. Free memory was 122.5MB in the beginning and 111.1MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.76ms. Allocated memory is still 161.5MB. Free memory was 111.1MB in the beginning and 109.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.32ms. Allocated memory is still 161.5MB. Free memory was 109.8MB in the beginning and 108.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 450.96ms. Allocated memory is still 161.5MB. Free memory was 108.6MB in the beginning and 126.2MB in the end (delta: -17.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 524.43ms. Allocated memory is still 161.5MB. Free memory was 125.7MB in the beginning and 109.5MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 4.18ms. Allocated memory is still 161.5MB. Free memory is still 108.9MB. 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: 17]: 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 57, overapproximation of to_real at line 43, overapproximation of someBinaryArithmeticDOUBLEoperation at line 55. Possible FailurePath: [L22] double E, E0, E1, S0, S1, S; [L23] double A1, A2, A3, B1, B2; [L24] int i; [L26] A1 = __VERIFIER_nondet_double() [L27] A2 = __VERIFIER_nondet_double() [L28] A3 = __VERIFIER_nondet_double() [L29] B1 = __VERIFIER_nondet_double() [L30] B2 = __VERIFIER_nondet_double() [L31] CALL assume_abort_if_not(A1 >= 0.69 && A1 <= 0.71) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) [L31] RET assume_abort_if_not(A1 >= 0.69 && A1 <= 0.71) [L32] CALL assume_abort_if_not(A2 >= -1.31 && A2 <= -1.29) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) [L32] RET assume_abort_if_not(A2 >= -1.31 && A2 <= -1.29) [L33] CALL assume_abort_if_not(A3 >= 1.09 && A3 <= 1.11) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) [L33] RET assume_abort_if_not(A3 >= 1.09 && A3 <= 1.11) [L34] CALL assume_abort_if_not(B1 >= 1.39 && B1 <= 1.41) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) [L34] RET assume_abort_if_not(B1 >= 1.39 && B1 <= 1.41) [L35] CALL assume_abort_if_not(B2 >= -0.71 && B2 <= -0.69) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) [L35] RET assume_abort_if_not(B2 >= -0.71 && B2 <= -0.69) [L38] E = __VERIFIER_nondet_double() [L39] E0 = __VERIFIER_nondet_double() [L40] CALL assume_abort_if_not(E >= 0. && E <= 1.) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) [L40] RET assume_abort_if_not(E >= 0. && E <= 1.) VAL [E=55] [L41] CALL assume_abort_if_not(E0 >= 0. && E0 <= 1.) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) [L41] RET assume_abort_if_not(E0 >= 0. && E0 <= 1.) VAL [E=55] [L43] S0 = 0 [L44] S = 0 [L46] i = 0 VAL [E=55, i=0] [L46] COND TRUE i <= 1000000 [L47] E1 = E0 [L48] E0 = E [L50] E = __VERIFIER_nondet_double() [L51] CALL assume_abort_if_not(E >= 0. && E <= 1.) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) [L51] RET assume_abort_if_not(E >= 0. && E <= 1.) VAL [E=55, E=56, i=0] [L53] S1 = S0 [L54] S0 = S [L55] S = A1*E - E0*A2 + E1*A3 + S0*B1 + S1*B2 [L57] CALL __VERIFIER_assert(S >= -100. && S <= 100.) [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L17] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 8, 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=20occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 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 [2023-11-21 19:46:14,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4199e1f-753f-4877-9cd9-451f60141945/bin/utaipan-verify-QoSU8krkJ5/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_a4199e1f-753f-4877-9cd9-451f60141945/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4199e1f-753f-4877-9cd9-451f60141945/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4199e1f-753f-4877-9cd9-451f60141945/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4199e1f-753f-4877-9cd9-451f60141945/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/filter2_set.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4199e1f-753f-4877-9cd9-451f60141945/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4199e1f-753f-4877-9cd9-451f60141945/bin/utaipan-verify-QoSU8krkJ5 --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 1052e6ec9925823ba5a2ccaaebf89a3336e5de0f5b82a0218158837daebc1dd1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:46:17,467 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:46:17,608 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4199e1f-753f-4877-9cd9-451f60141945/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-21 19:46:17,618 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:46:17,619 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:46:17,663 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:46:17,664 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:46:17,664 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:46:17,665 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:46:17,673 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:46:17,674 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:46:17,674 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:46:17,675 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:46:17,677 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:46:17,677 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:46:17,678 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:46:17,679 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:46:17,680 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:46:17,680 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 19:46:17,682 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 19:46:17,682 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:46:17,683 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:46:17,683 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:46:17,684 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:46:17,684 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 19:46:17,684 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 19:46:17,685 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 19:46:17,685 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 19:46:17,686 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:46:17,686 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:46:17,688 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:46:17,688 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 19:46:17,688 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:46:17,689 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:46:17,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:46:17,689 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:46:17,690 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:46:17,690 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:46:17,690 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-21 19:46:17,691 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 19:46:17,692 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:46:17,696 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:46:17,696 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:46:17,697 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:46:17,697 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_a4199e1f-753f-4877-9cd9-451f60141945/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4199e1f-753f-4877-9cd9-451f60141945/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1052e6ec9925823ba5a2ccaaebf89a3336e5de0f5b82a0218158837daebc1dd1 [2023-11-21 19:46:18,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:46:18,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:46:18,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:46:18,120 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:46:18,121 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:46:18,123 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4199e1f-753f-4877-9cd9-451f60141945/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/float-benchs/filter2_set.c [2023-11-21 19:46:21,329 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:46:21,606 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:46:21,607 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4199e1f-753f-4877-9cd9-451f60141945/sv-benchmarks/c/float-benchs/filter2_set.c [2023-11-21 19:46:21,619 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4199e1f-753f-4877-9cd9-451f60141945/bin/utaipan-verify-QoSU8krkJ5/data/b07e0fd30/b6f73ce77eae4aa99aa22a75027bc1cc/FLAG4f7c6af50 [2023-11-21 19:46:21,634 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4199e1f-753f-4877-9cd9-451f60141945/bin/utaipan-verify-QoSU8krkJ5/data/b07e0fd30/b6f73ce77eae4aa99aa22a75027bc1cc [2023-11-21 19:46:21,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:46:21,638 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:46:21,639 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:46:21,639 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:46:21,645 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:46:21,645 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:46:21" (1/1) ... [2023-11-21 19:46:21,646 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58a447a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:21, skipping insertion in model container [2023-11-21 19:46:21,647 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:46:21" (1/1) ... [2023-11-21 19:46:21,668 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:46:21,820 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_a4199e1f-753f-4877-9cd9-451f60141945/sv-benchmarks/c/float-benchs/filter2_set.c[664,677] [2023-11-21 19:46:21,839 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:46:21,853 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:46:21,866 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_a4199e1f-753f-4877-9cd9-451f60141945/sv-benchmarks/c/float-benchs/filter2_set.c[664,677] [2023-11-21 19:46:21,875 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:46:21,890 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:46:21,891 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:21 WrapperNode [2023-11-21 19:46:21,891 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:46:21,892 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:46:21,892 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:46:21,892 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:46:21,899 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:21" (1/1) ... [2023-11-21 19:46:21,909 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:21" (1/1) ... [2023-11-21 19:46:21,931 INFO L138 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 78 [2023-11-21 19:46:21,931 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:46:21,932 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:46:21,932 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:46:21,932 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:46:21,942 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:21" (1/1) ... [2023-11-21 19:46:21,942 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:21" (1/1) ... [2023-11-21 19:46:21,946 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:21" (1/1) ... [2023-11-21 19:46:21,947 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:21" (1/1) ... [2023-11-21 19:46:21,955 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:21" (1/1) ... [2023-11-21 19:46:21,958 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:21" (1/1) ... [2023-11-21 19:46:21,960 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:21" (1/1) ... [2023-11-21 19:46:21,962 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:21" (1/1) ... [2023-11-21 19:46:21,965 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:46:21,966 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:46:21,966 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:46:21,966 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:46:21,967 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:21" (1/1) ... [2023-11-21 19:46:21,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:46:21,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4199e1f-753f-4877-9cd9-451f60141945/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:46:22,035 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4199e1f-753f-4877-9cd9-451f60141945/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:46:22,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4199e1f-753f-4877-9cd9-451f60141945/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:46:22,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:46:22,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 19:46:22,107 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 19:46:22,107 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 19:46:22,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:46:22,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:46:22,186 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:46:22,189 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:46:24,654 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:46:24,718 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:46:24,718 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 19:46:24,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:46:24 BoogieIcfgContainer [2023-11-21 19:46:24,720 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:46:24,724 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:46:24,724 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:46:24,727 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:46:24,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:46:21" (1/3) ... [2023-11-21 19:46:24,729 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dcba76e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:46:24, skipping insertion in model container [2023-11-21 19:46:24,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:21" (2/3) ... [2023-11-21 19:46:24,729 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dcba76e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:46:24, skipping insertion in model container [2023-11-21 19:46:24,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:46:24" (3/3) ... [2023-11-21 19:46:24,731 INFO L112 eAbstractionObserver]: Analyzing ICFG filter2_set.c [2023-11-21 19:46:24,751 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:46:24,752 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 19:46:24,803 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:46:24,810 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;@1bb5214a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:46:24,811 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 19:46:24,815 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-21 19:46:24,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-21 19:46:24,824 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:46:24,825 INFO L195 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:46:24,826 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:46:24,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:46:24,832 INFO L85 PathProgramCache]: Analyzing trace with hash -356154640, now seen corresponding path program 1 times [2023-11-21 19:46:24,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:46:24,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [756663421] [2023-11-21 19:46:24,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:46:24,850 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 [2023-11-21 19:46:24,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4199e1f-753f-4877-9cd9-451f60141945/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:46:24,856 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4199e1f-753f-4877-9cd9-451f60141945/bin/utaipan-verify-QoSU8krkJ5/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) [2023-11-21 19:46:24,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4199e1f-753f-4877-9cd9-451f60141945/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:46:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:46:34,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-21 19:46:34,601 INFO L285 TraceCheckSpWp]: Computing forward predicates...