./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-floats-scientific-comp/loop4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/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_129cfe38-b813-4ef9-b054-2b7cca20f124/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-floats-scientific-comp/loop4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/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_129cfe38-b813-4ef9-b054-2b7cca20f124/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 93ae7f4320aeb5eadc7d42fef8f73afe8e6e658ec54f48f9ad9874df5186017d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:22:00,759 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:22:00,920 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:22:00,924 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:22:00,925 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:22:00,956 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:22:00,957 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:22:00,957 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:22:00,959 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:22:00,964 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:22:00,964 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:22:00,965 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:22:00,965 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:22:00,967 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:22:00,967 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:22:00,968 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:22:00,968 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:22:00,969 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:22:00,970 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:22:00,971 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:22:00,972 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:22:00,972 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:22:00,973 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:22:00,974 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:22:00,974 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:22:00,975 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:22:00,975 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:22:00,976 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:22:00,976 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:22:00,977 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:22:00,978 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:22:00,978 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:22:00,978 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:22:00,979 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:22:00,979 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:22:00,979 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:22:00,980 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:22:00,980 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:22:00,981 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:22:00,981 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:22:00,982 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:22:00,982 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:22:00,982 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:22:00,983 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:22:00,983 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:22:00,984 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:22:00,984 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:22:00,984 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_129cfe38-b813-4ef9-b054-2b7cca20f124/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93ae7f4320aeb5eadc7d42fef8f73afe8e6e658ec54f48f9ad9874df5186017d [2023-11-23 21:22:01,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:22:01,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:22:01,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:22:01,408 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:22:01,408 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:22:01,410 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/loop-floats-scientific-comp/loop4.i [2023-11-23 21:22:04,502 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:22:04,795 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:22:04,795 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/sv-benchmarks/c/loop-floats-scientific-comp/loop4.i [2023-11-23 21:22:04,811 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/bin/utaipan-verify-mE87zJ7Ire/data/7f0d0e8ab/e38953efcbcc41ec9d5fc9ec7e0b83a7/FLAG1748ab3ab [2023-11-23 21:22:04,826 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/bin/utaipan-verify-mE87zJ7Ire/data/7f0d0e8ab/e38953efcbcc41ec9d5fc9ec7e0b83a7 [2023-11-23 21:22:04,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:22:04,830 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:22:04,832 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:22:04,832 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:22:04,838 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:22:04,839 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:22:04" (1/1) ... [2023-11-23 21:22:04,840 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c859967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:04, skipping insertion in model container [2023-11-23 21:22:04,840 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:22:04" (1/1) ... [2023-11-23 21:22:04,903 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:22:05,541 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_129cfe38-b813-4ef9-b054-2b7cca20f124/sv-benchmarks/c/loop-floats-scientific-comp/loop4.i[40784,40797] [2023-11-23 21:22:05,562 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:22:05,575 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:22:05,618 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_129cfe38-b813-4ef9-b054-2b7cca20f124/sv-benchmarks/c/loop-floats-scientific-comp/loop4.i[40784,40797] [2023-11-23 21:22:05,627 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:22:05,793 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:22:05,793 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:05 WrapperNode [2023-11-23 21:22:05,793 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:22:05,795 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:22:05,795 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:22:05,795 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:22:05,803 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:05" (1/1) ... [2023-11-23 21:22:05,830 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:05" (1/1) ... [2023-11-23 21:22:05,868 INFO L138 Inliner]: procedures = 452, calls = 18, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 73 [2023-11-23 21:22:05,869 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:22:05,870 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:22:05,870 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:22:05,870 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:22:05,880 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:05" (1/1) ... [2023-11-23 21:22:05,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:05" (1/1) ... [2023-11-23 21:22:05,891 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:05" (1/1) ... [2023-11-23 21:22:05,892 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:05" (1/1) ... [2023-11-23 21:22:05,904 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:05" (1/1) ... [2023-11-23 21:22:05,912 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:05" (1/1) ... [2023-11-23 21:22:05,919 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:05" (1/1) ... [2023-11-23 21:22:05,920 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:05" (1/1) ... [2023-11-23 21:22:05,922 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:22:05,931 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:22:05,931 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:22:05,931 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:22:05,932 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:05" (1/1) ... [2023-11-23 21:22:05,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:22:05,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:05,966 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:22:05,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:22:06,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:22:06,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:22:06,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:22:06,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:22:06,107 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:22:06,109 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:22:06,219 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:22:06,281 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:22:06,281 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:22:06,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:06 BoogieIcfgContainer [2023-11-23 21:22:06,283 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:22:06,286 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:22:06,286 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:22:06,290 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:22:06,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:22:04" (1/3) ... [2023-11-23 21:22:06,291 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c780ec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:22:06, skipping insertion in model container [2023-11-23 21:22:06,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:05" (2/3) ... [2023-11-23 21:22:06,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c780ec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:22:06, skipping insertion in model container [2023-11-23 21:22:06,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:06" (3/3) ... [2023-11-23 21:22:06,293 INFO L112 eAbstractionObserver]: Analyzing ICFG loop4.i [2023-11-23 21:22:06,315 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:22:06,316 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:22:06,364 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:22:06,370 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;@56ad0e52, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:22:06,371 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:22:06,375 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:06,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-23 21:22:06,382 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:06,382 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 21:22:06,383 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:06,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:06,389 INFO L85 PathProgramCache]: Analyzing trace with hash 78497652, now seen corresponding path program 1 times [2023-11-23 21:22:06,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:06,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325610179] [2023-11-23 21:22:06,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:06,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:06,592 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 21:22:06,592 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:06,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325610179] [2023-11-23 21:22:06,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325610179] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:06,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:06,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:22:06,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578902972] [2023-11-23 21:22:06,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:06,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:22:06,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:22:06,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:22:06,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:22:06,653 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 21:22:06,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:06,697 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2023-11-23 21:22:06,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:22:06,701 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2023-11-23 21:22:06,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:06,709 INFO L225 Difference]: With dead ends: 15 [2023-11-23 21:22:06,709 INFO L226 Difference]: Without dead ends: 7 [2023-11-23 21:22:06,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:22:06,716 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:06,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:22:06,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2023-11-23 21:22:06,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2023-11-23 21:22:06,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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 21:22:06,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2023-11-23 21:22:06,749 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2023-11-23 21:22:06,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:06,751 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2023-11-23 21:22:06,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 21:22:06,751 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2023-11-23 21:22:06,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 21:22:06,752 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:06,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-23 21:22:06,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:22:06,753 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:06,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:06,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1866287445, now seen corresponding path program 1 times [2023-11-23 21:22:06,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:06,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662645031] [2023-11-23 21:22:06,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:06,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:22:06,827 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:22:06,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:22:06,873 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:22:06,874 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:22:06,876 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:22:06,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:22:06,882 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-23 21:22:06,885 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:22:06,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:22:06 BoogieIcfgContainer [2023-11-23 21:22:06,913 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:22:06,914 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:22:06,914 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:22:06,915 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:22:06,915 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:06" (3/4) ... [2023-11-23 21:22:06,918 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:22:06,919 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:22:06,921 INFO L158 Benchmark]: Toolchain (without parser) took 2090.28ms. Allocated memory is still 184.5MB. Free memory was 145.4MB in the beginning and 139.7MB in the end (delta: 5.7MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. [2023-11-23 21:22:06,921 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 121.6MB. Free memory is still 88.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:22:06,922 INFO L158 Benchmark]: CACSL2BoogieTranslator took 962.13ms. Allocated memory is still 184.5MB. Free memory was 145.0MB in the beginning and 113.6MB in the end (delta: 31.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-23 21:22:06,923 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.54ms. Allocated memory is still 184.5MB. Free memory was 113.6MB in the beginning and 111.0MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 21:22:06,923 INFO L158 Benchmark]: Boogie Preprocessor took 60.27ms. Allocated memory is still 184.5MB. Free memory was 111.0MB in the beginning and 109.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:22:06,924 INFO L158 Benchmark]: RCFGBuilder took 352.22ms. Allocated memory is still 184.5MB. Free memory was 109.7MB in the beginning and 96.8MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 21:22:06,924 INFO L158 Benchmark]: TraceAbstraction took 627.60ms. Allocated memory is still 184.5MB. Free memory was 96.0MB in the beginning and 139.7MB in the end (delta: -43.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:22:06,925 INFO L158 Benchmark]: Witness Printer took 5.62ms. Allocated memory is still 184.5MB. Free memory is still 139.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:22:06,928 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 121.6MB. Free memory is still 88.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 962.13ms. Allocated memory is still 184.5MB. Free memory was 145.0MB in the beginning and 113.6MB in the end (delta: 31.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.54ms. Allocated memory is still 184.5MB. Free memory was 113.6MB in the beginning and 111.0MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.27ms. Allocated memory is still 184.5MB. Free memory was 111.0MB in the beginning and 109.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 352.22ms. Allocated memory is still 184.5MB. Free memory was 109.7MB in the beginning and 96.8MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 627.60ms. Allocated memory is still 184.5MB. Free memory was 96.0MB in the beginning and 139.7MB in the end (delta: -43.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.62ms. Allocated memory is still 184.5MB. Free memory is still 139.7MB. 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: 988]: 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 997, overapproximation of someBinaryArithmeticFLOAToperation at line 1005, overapproximation of someBinaryArithmeticDOUBLEoperation at line 998. Possible FailurePath: [L990] float pi = 3.14159 ; [L1009] int x ; [L1010] float angleInRadian ; [L1011] float phaseLag = pi/2, phaseLead=pi ; [L1012] double sum1=0.0, sum2 = 0.0 ; [L1013] int temp; [L1014] double count=0.0 ; VAL [count=0, phaseLead=314159/100000, pi=314159/100000, sum1=0, sum2=0] [L1018] COND TRUE 1 [L1020] x = __VERIFIER_nondet_int() [L1021] CALL assume_abort_if_not(x > -180 && x < 180) [L986] COND FALSE !(!cond) [L1021] RET assume_abort_if_not(x > -180 && x < 180) [L1022] CALL, EXPR radianMeasure(x) [L1005] return (degrees * (pi/180)) ; [L1022] RET, EXPR radianMeasure(x) [L1022] angleInRadian = radianMeasure(x) [L1023] sum2 = sum2 + sin(angleInRadian+2*phaseLead) [L1024] sum1 = sum1 + cos(angleInRadian+phaseLag) [L1026] temp = __VERIFIER_nondet_int() [L1027] count++ VAL [angleInRadian=119, phaseLead=314159/100000, pi=314159/100000, temp=0, x=0] [L1028] COND TRUE temp == 0 VAL [angleInRadian=119, phaseLead=314159/100000, pi=314159/100000, temp=0, x=0] [L1031] CALL, EXPR diff(sum1,sum2) [L997] COND FALSE !(x1 > x2) [L1000] return (x2-x1) ; [L1031] RET, EXPR diff(sum1,sum2) [L1031] CALL __VERIFIER_assert(diff(sum1,sum2) <= count) [L988] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, pi=314159/100000] [L988] reach_error() VAL [\old(cond)=0, cond=0, pi=314159/100000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 5 mSDtfsCounter, 4 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 4 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 21:22:06,970 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/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_129cfe38-b813-4ef9-b054-2b7cca20f124/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-floats-scientific-comp/loop4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/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_129cfe38-b813-4ef9-b054-2b7cca20f124/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 93ae7f4320aeb5eadc7d42fef8f73afe8e6e658ec54f48f9ad9874df5186017d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:22:09,886 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:22:10,064 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-23 21:22:10,075 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:22:10,077 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:22:10,133 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:22:10,133 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:22:10,134 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:22:10,135 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:22:10,141 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:22:10,142 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:22:10,142 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:22:10,143 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:22:10,145 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:22:10,145 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:22:10,146 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:22:10,147 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:22:10,148 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:22:10,148 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:22:10,150 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:22:10,150 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:22:10,151 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:22:10,151 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:22:10,152 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:22:10,152 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:22:10,153 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:22:10,153 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:22:10,154 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:22:10,154 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:22:10,154 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:22:10,156 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:22:10,156 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:22:10,157 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:22:10,157 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:22:10,157 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:22:10,158 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:22:10,158 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:22:10,158 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:22:10,159 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:22:10,160 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:22:10,160 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:22:10,161 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:22:10,161 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:22:10,161 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:22:10,162 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_129cfe38-b813-4ef9-b054-2b7cca20f124/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93ae7f4320aeb5eadc7d42fef8f73afe8e6e658ec54f48f9ad9874df5186017d [2023-11-23 21:22:10,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:22:10,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:22:10,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:22:10,702 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:22:10,702 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:22:10,705 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/loop-floats-scientific-comp/loop4.i [2023-11-23 21:22:14,293 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:22:14,610 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:22:14,611 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/sv-benchmarks/c/loop-floats-scientific-comp/loop4.i [2023-11-23 21:22:14,630 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/bin/utaipan-verify-mE87zJ7Ire/data/da6145cf3/4eb35747de5e4917b58d52deeacb1d23/FLAG4fe845052 [2023-11-23 21:22:14,649 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/bin/utaipan-verify-mE87zJ7Ire/data/da6145cf3/4eb35747de5e4917b58d52deeacb1d23 [2023-11-23 21:22:14,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:22:14,658 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:22:14,686 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:22:14,686 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:22:14,693 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:22:14,694 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:22:14" (1/1) ... [2023-11-23 21:22:14,696 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b5ed099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:14, skipping insertion in model container [2023-11-23 21:22:14,696 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:22:14" (1/1) ... [2023-11-23 21:22:14,772 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:22:15,483 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_129cfe38-b813-4ef9-b054-2b7cca20f124/sv-benchmarks/c/loop-floats-scientific-comp/loop4.i[40784,40797] [2023-11-23 21:22:15,504 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:22:15,520 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:22:15,574 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_129cfe38-b813-4ef9-b054-2b7cca20f124/sv-benchmarks/c/loop-floats-scientific-comp/loop4.i[40784,40797] [2023-11-23 21:22:15,591 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:22:15,805 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:22:15,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:15 WrapperNode [2023-11-23 21:22:15,806 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:22:15,808 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:22:15,808 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:22:15,808 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:22:15,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:15" (1/1) ... [2023-11-23 21:22:15,872 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:15" (1/1) ... [2023-11-23 21:22:15,908 INFO L138 Inliner]: procedures = 453, calls = 18, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 72 [2023-11-23 21:22:15,908 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:22:15,909 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:22:15,910 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:22:15,910 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:22:15,921 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:15" (1/1) ... [2023-11-23 21:22:15,921 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:15" (1/1) ... [2023-11-23 21:22:15,926 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:15" (1/1) ... [2023-11-23 21:22:15,927 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:15" (1/1) ... [2023-11-23 21:22:15,948 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:15" (1/1) ... [2023-11-23 21:22:15,954 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:15" (1/1) ... [2023-11-23 21:22:15,963 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:15" (1/1) ... [2023-11-23 21:22:15,971 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:15" (1/1) ... [2023-11-23 21:22:15,975 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:22:15,976 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:22:15,977 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:22:15,977 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:22:15,978 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:15" (1/1) ... [2023-11-23 21:22:15,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:22:16,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:16,018 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:22:16,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:22:16,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:22:16,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:22:16,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:22:16,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:22:16,262 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:22:16,267 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:22:19,113 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:22:19,213 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:22:19,214 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:22:19,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:19 BoogieIcfgContainer [2023-11-23 21:22:19,216 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:22:19,219 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:22:19,219 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:22:19,224 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:22:19,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:22:14" (1/3) ... [2023-11-23 21:22:19,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ffe4f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:22:19, skipping insertion in model container [2023-11-23 21:22:19,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:15" (2/3) ... [2023-11-23 21:22:19,227 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ffe4f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:22:19, skipping insertion in model container [2023-11-23 21:22:19,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:19" (3/3) ... [2023-11-23 21:22:19,233 INFO L112 eAbstractionObserver]: Analyzing ICFG loop4.i [2023-11-23 21:22:19,258 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:22:19,258 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:22:19,332 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:22:19,342 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;@363623e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:22:19,343 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:22:19,352 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:19,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 21:22:19,362 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:19,364 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:22:19,368 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:19,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:19,377 INFO L85 PathProgramCache]: Analyzing trace with hash 933795117, now seen corresponding path program 1 times [2023-11-23 21:22:19,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:22:19,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1981311462] [2023-11-23 21:22:19,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:19,396 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 21:22:19,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:22:19,401 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/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 21:22:19,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/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 21:22:19,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:19,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:22:19,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:19,691 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 21:22:19,691 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:22:19,692 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:22:19,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1981311462] [2023-11-23 21:22:19,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1981311462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:19,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:19,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:22:19,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704814719] [2023-11-23 21:22:19,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:19,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:22:19,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:22:19,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:22:19,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:22:19,747 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 21:22:21,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:22:22,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:22,023 INFO L93 Difference]: Finished difference Result 25 states and 35 transitions. [2023-11-23 21:22:22,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:22:22,026 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2023-11-23 21:22:22,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:22,035 INFO L225 Difference]: With dead ends: 25 [2023-11-23 21:22:22,035 INFO L226 Difference]: Without dead ends: 11 [2023-11-23 21:22:22,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:22:22,043 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:22,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2023-11-23 21:22:22,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-11-23 21:22:22,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-11-23 21:22:22,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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 21:22:22,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2023-11-23 21:22:22,083 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 7 [2023-11-23 21:22:22,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:22,083 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2023-11-23 21:22:22,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 21:22:22,084 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2023-11-23 21:22:22,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-23 21:22:22,085 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:22,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:22:22,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/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)] Ended with exit code 0 [2023-11-23 21:22:22,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/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 21:22:22,292 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:22,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:22,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1900934522, now seen corresponding path program 1 times [2023-11-23 21:22:22,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:22:22,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343110032] [2023-11-23 21:22:22,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:22,295 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 21:22:22,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:22:22,296 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/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 21:22:22,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/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 21:22:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:22:22,894 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:22:23,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:22:23,452 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-11-23 21:22:23,453 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:22:23,455 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:22:23,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/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)] Forceful destruction successful, exit code 0 [2023-11-23 21:22:23,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/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 21:22:23,672 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-23 21:22:23,677 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:22:23,727 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:22:23 BoogieIcfgContainer [2023-11-23 21:22:23,727 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:22:23,728 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:22:23,728 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:22:23,728 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:22:23,728 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:19" (3/4) ... [2023-11-23 21:22:23,730 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:22:23,732 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:22:23,733 INFO L158 Benchmark]: Toolchain (without parser) took 9075.32ms. Allocated memory was 65.0MB in the beginning and 102.8MB in the end (delta: 37.7MB). Free memory was 28.0MB in the beginning and 51.0MB in the end (delta: -22.9MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2023-11-23 21:22:23,734 INFO L158 Benchmark]: CDTParser took 1.56ms. Allocated memory is still 65.0MB. Free memory is still 41.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:22:23,734 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1121.35ms. Allocated memory is still 102.8MB. Free memory was 82.7MB in the beginning and 62.3MB in the end (delta: 20.3MB). Peak memory consumption was 32.6MB. Max. memory is 16.1GB. [2023-11-23 21:22:23,735 INFO L158 Benchmark]: Boogie Procedure Inliner took 100.91ms. Allocated memory is still 102.8MB. Free memory was 62.3MB in the beginning and 59.4MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:22:23,736 INFO L158 Benchmark]: Boogie Preprocessor took 66.15ms. Allocated memory is still 102.8MB. Free memory was 59.4MB in the beginning and 58.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:22:23,736 INFO L158 Benchmark]: RCFGBuilder took 3240.08ms. Allocated memory is still 102.8MB. Free memory was 57.8MB in the beginning and 77.2MB in the end (delta: -19.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 21:22:23,737 INFO L158 Benchmark]: TraceAbstraction took 4507.82ms. Allocated memory is still 102.8MB. Free memory was 76.6MB in the beginning and 51.5MB in the end (delta: 25.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-23 21:22:23,737 INFO L158 Benchmark]: Witness Printer took 4.72ms. Allocated memory is still 102.8MB. Free memory is still 51.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:22:23,745 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.56ms. Allocated memory is still 65.0MB. Free memory is still 41.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1121.35ms. Allocated memory is still 102.8MB. Free memory was 82.7MB in the beginning and 62.3MB in the end (delta: 20.3MB). Peak memory consumption was 32.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 100.91ms. Allocated memory is still 102.8MB. Free memory was 62.3MB in the beginning and 59.4MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.15ms. Allocated memory is still 102.8MB. Free memory was 59.4MB in the beginning and 58.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 3240.08ms. Allocated memory is still 102.8MB. Free memory was 57.8MB in the beginning and 77.2MB in the end (delta: -19.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 4507.82ms. Allocated memory is still 102.8MB. Free memory was 76.6MB in the beginning and 51.5MB in the end (delta: 25.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 4.72ms. Allocated memory is still 102.8MB. Free memory is still 51.0MB. 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: 988]: 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 sin at line 1023, overapproximation of cos at line 1024. Possible FailurePath: [L990] float pi = 3.14159 ; [L1009] int x ; [L1010] float angleInRadian ; [L1011] float phaseLag = pi/2, phaseLead=pi ; [L1012] double sum1=0.0, sum2 = 0.0 ; [L1013] int temp; [L1014] double count=0.0 ; VAL [count=0.0, phaseLag=1.5707950592041016, phaseLead=3.141590118408203, pi=3.141590118408203, sum1=0.0, sum2=0.0] [L1018] COND TRUE 1 [L1020] x = __VERIFIER_nondet_int() [L1021] CALL assume_abort_if_not(x > -180 && x < 180) [L986] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, pi=3.141590118408203] [L1021] RET assume_abort_if_not(x > -180 && x < 180) [L1022] CALL, EXPR radianMeasure(x) [L1005] return (degrees * (pi/180)) ; [L1022] RET, EXPR radianMeasure(x) [L1022] angleInRadian = radianMeasure(x) [L1023] sum2 = sum2 + sin(angleInRadian+2*phaseLead) [L1024] sum1 = sum1 + cos(angleInRadian+phaseLag) [L1026] temp = __VERIFIER_nondet_int() [L1027] count++ VAL [angleInRadian=0.0, count=1.0, phaseLag=1.5707950592041016, phaseLead=3.141590118408203, pi=3.141590118408203, sum1=0.0, sum2=-2.0, x=0] [L1028] COND TRUE temp == 0 VAL [angleInRadian=0.0, count=1.0, phaseLag=1.5707950592041016, phaseLead=3.141590118408203, pi=3.141590118408203, sum1=0.0, sum2=-2.0, temp=0, x=0] [L1031] CALL, EXPR diff(sum1,sum2) [L997] COND TRUE x1 > x2 [L998] return (x1-x2) ; VAL [\old(x1)=0.0, \old(x2)=-2.0, \result=2.0, pi=3.141590118408203, x1=0.0, x2=-2.0] [L1031] RET, EXPR diff(sum1,sum2) [L1031] CALL __VERIFIER_assert(diff(sum1,sum2) <= count) [L988] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, pi=3.141590118408203] [L988] reach_error() VAL [\old(cond)=0, cond=0, pi=3.141590118408203] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 11 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 37 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 21:22:23,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129cfe38-b813-4ef9-b054-2b7cca20f124/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 Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample