./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/filter2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_293f5422-cfa0-46fc-b697-786139fb3c61/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293f5422-cfa0-46fc-b697-786139fb3c61/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293f5422-cfa0-46fc-b697-786139fb3c61/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293f5422-cfa0-46fc-b697-786139fb3c61/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/filter2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293f5422-cfa0-46fc-b697-786139fb3c61/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293f5422-cfa0-46fc-b697-786139fb3c61/bin/uautomizer-verify-bycVGegfSx --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e42e84729022b725ebcfce66d0ece68757a1a9b385230356b4d45a24fc6b4ef2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 21:05:03,033 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 21:05:03,158 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293f5422-cfa0-46fc-b697-786139fb3c61/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 21:05:03,171 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 21:05:03,172 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 21:05:03,212 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 21:05:03,213 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 21:05:03,214 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 21:05:03,215 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 21:05:03,216 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 21:05:03,216 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 21:05:03,217 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 21:05:03,218 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 21:05:03,219 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 21:05:03,219 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 21:05:03,220 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 21:05:03,220 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 21:05:03,221 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 21:05:03,222 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 21:05:03,222 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 21:05:03,223 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 21:05:03,223 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 21:05:03,224 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 21:05:03,224 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 21:05:03,225 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 21:05:03,225 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 21:05:03,225 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 21:05:03,226 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 21:05:03,226 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 21:05:03,227 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 21:05:03,228 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 21:05:03,229 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:05:03,229 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 21:05:03,229 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 21:05:03,230 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 21:05:03,230 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 21:05:03,230 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 21:05:03,230 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 21:05:03,231 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 21:05:03,231 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 21:05:03,231 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 21:05:03,232 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 21:05:03,232 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_293f5422-cfa0-46fc-b697-786139fb3c61/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293f5422-cfa0-46fc-b697-786139fb3c61/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e42e84729022b725ebcfce66d0ece68757a1a9b385230356b4d45a24fc6b4ef2 [2023-11-21 21:05:03,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 21:05:03,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 21:05:03,561 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 21:05:03,563 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 21:05:03,563 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 21:05:03,564 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293f5422-cfa0-46fc-b697-786139fb3c61/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/float-benchs/filter2.c [2023-11-21 21:05:06,648 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 21:05:06,917 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 21:05:06,919 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293f5422-cfa0-46fc-b697-786139fb3c61/sv-benchmarks/c/float-benchs/filter2.c [2023-11-21 21:05:06,928 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293f5422-cfa0-46fc-b697-786139fb3c61/bin/uautomizer-verify-bycVGegfSx/data/6ea53274a/f4512462490a42d88a8830da23c11a2d/FLAGfe9d1e4ec [2023-11-21 21:05:06,946 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293f5422-cfa0-46fc-b697-786139fb3c61/bin/uautomizer-verify-bycVGegfSx/data/6ea53274a/f4512462490a42d88a8830da23c11a2d [2023-11-21 21:05:06,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 21:05:06,953 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 21:05:06,955 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 21:05:06,956 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 21:05:06,962 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 21:05:06,963 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:05:06" (1/1) ... [2023-11-21 21:05:06,964 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c4b9801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:06, skipping insertion in model container [2023-11-21 21:05:06,964 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:05:06" (1/1) ... [2023-11-21 21:05:06,989 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 21:05:07,192 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_293f5422-cfa0-46fc-b697-786139fb3c61/sv-benchmarks/c/float-benchs/filter2.c[652,665] [2023-11-21 21:05:07,210 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:05:07,221 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 21:05:07,234 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_293f5422-cfa0-46fc-b697-786139fb3c61/sv-benchmarks/c/float-benchs/filter2.c[652,665] [2023-11-21 21:05:07,240 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:05:07,256 INFO L206 MainTranslator]: Completed translation [2023-11-21 21:05:07,257 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:07 WrapperNode [2023-11-21 21:05:07,257 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 21:05:07,258 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 21:05:07,259 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 21:05:07,259 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 21:05:07,267 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:07" (1/1) ... [2023-11-21 21:05:07,275 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:07" (1/1) ... [2023-11-21 21:05:07,295 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 52 [2023-11-21 21:05:07,296 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 21:05:07,296 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 21:05:07,297 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 21:05:07,297 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 21:05:07,309 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:07" (1/1) ... [2023-11-21 21:05:07,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:07" (1/1) ... [2023-11-21 21:05:07,311 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:07" (1/1) ... [2023-11-21 21:05:07,320 INFO L187 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-21 21:05:07,321 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:07" (1/1) ... [2023-11-21 21:05:07,321 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:07" (1/1) ... [2023-11-21 21:05:07,326 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:07" (1/1) ... [2023-11-21 21:05:07,329 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:07" (1/1) ... [2023-11-21 21:05:07,330 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:07" (1/1) ... [2023-11-21 21:05:07,332 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:07" (1/1) ... [2023-11-21 21:05:07,333 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 21:05:07,335 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 21:05:07,335 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 21:05:07,335 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 21:05:07,336 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:07" (1/1) ... [2023-11-21 21:05:07,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:05:07,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293f5422-cfa0-46fc-b697-786139fb3c61/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:05:07,369 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293f5422-cfa0-46fc-b697-786139fb3c61/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 21:05:07,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293f5422-cfa0-46fc-b697-786139fb3c61/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 21:05:07,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 21:05:07,418 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 21:05:07,418 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 21:05:07,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 21:05:07,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 21:05:07,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 21:05:07,496 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 21:05:07,498 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 21:05:07,655 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 21:05:07,692 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 21:05:07,692 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 21:05:07,694 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:05:07 BoogieIcfgContainer [2023-11-21 21:05:07,694 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 21:05:07,717 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 21:05:07,717 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 21:05:07,721 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 21:05:07,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:05:06" (1/3) ... [2023-11-21 21:05:07,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@271475cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:05:07, skipping insertion in model container [2023-11-21 21:05:07,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:07" (2/3) ... [2023-11-21 21:05:07,723 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@271475cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:05:07, skipping insertion in model container [2023-11-21 21:05:07,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:05:07" (3/3) ... [2023-11-21 21:05:07,725 INFO L112 eAbstractionObserver]: Analyzing ICFG filter2.c [2023-11-21 21:05:07,763 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 21:05:07,763 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 21:05:07,815 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 21:05:07,822 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=PETRI_NET, 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;@383d59c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 21:05:07,823 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 21:05:07,827 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 21:05:07,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-21 21:05:07,836 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:05:07,837 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:05:07,837 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:05:07,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:05:07,844 INFO L85 PathProgramCache]: Analyzing trace with hash -251003801, now seen corresponding path program 1 times [2023-11-21 21:05:07,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:05:07,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933902879] [2023-11-21 21:05:07,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:05:07,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:05:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:05:08,006 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:05:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:05:08,063 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:05:08,065 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 21:05:08,067 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-21 21:05:08,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 21:05:08,075 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-21 21:05:08,079 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 21:05:08,112 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 09:05:08 BoogieIcfgContainer [2023-11-21 21:05:08,113 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 21:05:08,116 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 21:05:08,116 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 21:05:08,116 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 21:05:08,117 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:05:07" (3/4) ... [2023-11-21 21:05:08,120 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 21:05:08,121 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 21:05:08,122 INFO L158 Benchmark]: Toolchain (without parser) took 1168.99ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 82.1MB in the beginning and 114.4MB in the end (delta: -32.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 21:05:08,123 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 127.9MB. Free memory is still 72.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 21:05:08,124 INFO L158 Benchmark]: CACSL2BoogieTranslator took 302.35ms. Allocated memory is still 127.9MB. Free memory was 82.1MB in the beginning and 71.3MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-21 21:05:08,124 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.34ms. Allocated memory is still 127.9MB. Free memory was 71.3MB in the beginning and 69.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 21:05:08,125 INFO L158 Benchmark]: Boogie Preprocessor took 37.47ms. Allocated memory is still 127.9MB. Free memory was 69.9MB in the beginning and 67.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 21:05:08,126 INFO L158 Benchmark]: RCFGBuilder took 360.11ms. Allocated memory is still 127.9MB. Free memory was 67.8MB in the beginning and 57.0MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-21 21:05:08,127 INFO L158 Benchmark]: TraceAbstraction took 396.09ms. Allocated memory is still 155.2MB. Free memory was 125.2MB in the beginning and 114.4MB in the end (delta: 10.7MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2023-11-21 21:05:08,127 INFO L158 Benchmark]: Witness Printer took 5.75ms. Allocated memory is still 155.2MB. Free memory is still 114.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 21:05:08,131 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 127.9MB. Free memory is still 72.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 302.35ms. Allocated memory is still 127.9MB. Free memory was 82.1MB in the beginning and 71.3MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.34ms. Allocated memory is still 127.9MB. Free memory was 71.3MB in the beginning and 69.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.47ms. Allocated memory is still 127.9MB. Free memory was 69.9MB in the beginning and 67.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 360.11ms. Allocated memory is still 127.9MB. Free memory was 67.8MB in the beginning and 57.0MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 396.09ms. Allocated memory is still 155.2MB. Free memory was 125.2MB in the beginning and 114.4MB in the end (delta: 10.7MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. * Witness Printer took 5.75ms. Allocated memory is still 155.2MB. Free memory is still 114.4MB. 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 44, overapproximation of to_real at line 30, overapproximation of someBinaryArithmeticDOUBLEoperation at line 42. Possible FailurePath: [L22] double E, E0, E1, S0, S1, S; [L23] int i; [L25] E = __VERIFIER_nondet_double() [L26] E0 = __VERIFIER_nondet_double() [L27] CALL assume_abort_if_not(E >= 0. && E <= 1.) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) [L27] RET assume_abort_if_not(E >= 0. && E <= 1.) [L28] CALL assume_abort_if_not(E0 >= 0. && E0 <= 1.) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) [L28] RET assume_abort_if_not(E0 >= 0. && E0 <= 1.) [L30] S0 = 0 [L31] S = 0 [L33] i = 0 VAL [i=0] [L33] COND TRUE i <= 1000000 [L34] E1 = E0 [L35] E0 = E [L37] E = __VERIFIER_nondet_double() [L38] CALL assume_abort_if_not(E >= 0. && E <= 1.) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) [L38] RET assume_abort_if_not(E >= 0. && E <= 1.) VAL [E=54, E=55, i=0] [L40] S1 = S0 [L41] S0 = S [L42] S = 0.7*E - E0*1.3 + E1*1.1 + S0*1.4 - S1*0.7 [L44] CALL __VERIFIER_assert(S >= -4. && S <= 4.) [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, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 3, 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=14occurred 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, 15 NumberOfCodeBlocks, 15 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 21:05:08,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293f5422-cfa0-46fc-b697-786139fb3c61/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293f5422-cfa0-46fc-b697-786139fb3c61/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293f5422-cfa0-46fc-b697-786139fb3c61/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293f5422-cfa0-46fc-b697-786139fb3c61/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293f5422-cfa0-46fc-b697-786139fb3c61/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/filter2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293f5422-cfa0-46fc-b697-786139fb3c61/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293f5422-cfa0-46fc-b697-786139fb3c61/bin/uautomizer-verify-bycVGegfSx --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e42e84729022b725ebcfce66d0ece68757a1a9b385230356b4d45a24fc6b4ef2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 21:05:11,039 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 21:05:11,173 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293f5422-cfa0-46fc-b697-786139fb3c61/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-21 21:05:11,180 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 21:05:11,180 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 21:05:11,209 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 21:05:11,212 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 21:05:11,213 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 21:05:11,214 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 21:05:11,216 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 21:05:11,217 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 21:05:11,217 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 21:05:11,218 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 21:05:11,223 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 21:05:11,223 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 21:05:11,224 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 21:05:11,225 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 21:05:11,225 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 21:05:11,226 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 21:05:11,227 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 21:05:11,228 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 21:05:11,228 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 21:05:11,229 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 21:05:11,229 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 21:05:11,229 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 21:05:11,230 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 21:05:11,230 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 21:05:11,231 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 21:05:11,231 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 21:05:11,232 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 21:05:11,233 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 21:05:11,234 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 21:05:11,234 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 21:05:11,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:05:11,235 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 21:05:11,235 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 21:05:11,236 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 21:05:11,237 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-21 21:05:11,237 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 21:05:11,237 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 21:05:11,237 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 21:05:11,238 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 21:05:11,238 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 21:05:11,238 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 21:05:11,239 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-21 21:05:11,239 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_293f5422-cfa0-46fc-b697-786139fb3c61/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293f5422-cfa0-46fc-b697-786139fb3c61/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e42e84729022b725ebcfce66d0ece68757a1a9b385230356b4d45a24fc6b4ef2 [2023-11-21 21:05:11,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 21:05:11,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 21:05:11,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 21:05:11,680 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 21:05:11,681 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 21:05:11,683 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293f5422-cfa0-46fc-b697-786139fb3c61/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/float-benchs/filter2.c [2023-11-21 21:05:15,096 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 21:05:15,425 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 21:05:15,426 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293f5422-cfa0-46fc-b697-786139fb3c61/sv-benchmarks/c/float-benchs/filter2.c [2023-11-21 21:05:15,436 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293f5422-cfa0-46fc-b697-786139fb3c61/bin/uautomizer-verify-bycVGegfSx/data/ed9f6b400/3742fd5069954124a450bb8b7d24556f/FLAG7b66af15d [2023-11-21 21:05:15,449 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293f5422-cfa0-46fc-b697-786139fb3c61/bin/uautomizer-verify-bycVGegfSx/data/ed9f6b400/3742fd5069954124a450bb8b7d24556f [2023-11-21 21:05:15,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 21:05:15,453 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 21:05:15,455 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 21:05:15,455 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 21:05:15,460 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 21:05:15,461 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:05:15" (1/1) ... [2023-11-21 21:05:15,463 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c386ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:15, skipping insertion in model container [2023-11-21 21:05:15,463 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:05:15" (1/1) ... [2023-11-21 21:05:15,485 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 21:05:15,639 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_293f5422-cfa0-46fc-b697-786139fb3c61/sv-benchmarks/c/float-benchs/filter2.c[652,665] [2023-11-21 21:05:15,658 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:05:15,673 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 21:05:15,691 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_293f5422-cfa0-46fc-b697-786139fb3c61/sv-benchmarks/c/float-benchs/filter2.c[652,665] [2023-11-21 21:05:15,710 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:05:15,729 INFO L206 MainTranslator]: Completed translation [2023-11-21 21:05:15,730 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:15 WrapperNode [2023-11-21 21:05:15,730 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 21:05:15,731 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 21:05:15,732 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 21:05:15,732 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 21:05:15,739 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:15" (1/1) ... [2023-11-21 21:05:15,771 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:15" (1/1) ... [2023-11-21 21:05:15,799 INFO L138 Inliner]: procedures = 15, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2023-11-21 21:05:15,799 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 21:05:15,800 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 21:05:15,800 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 21:05:15,801 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 21:05:15,812 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:15" (1/1) ... [2023-11-21 21:05:15,812 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:15" (1/1) ... [2023-11-21 21:05:15,823 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:15" (1/1) ... [2023-11-21 21:05:15,840 INFO L187 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-21 21:05:15,840 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:15" (1/1) ... [2023-11-21 21:05:15,840 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:15" (1/1) ... [2023-11-21 21:05:15,860 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:15" (1/1) ... [2023-11-21 21:05:15,863 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:15" (1/1) ... [2023-11-21 21:05:15,865 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:15" (1/1) ... [2023-11-21 21:05:15,866 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:15" (1/1) ... [2023-11-21 21:05:15,869 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 21:05:15,870 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 21:05:15,870 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 21:05:15,870 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 21:05:15,871 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:15" (1/1) ... [2023-11-21 21:05:15,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:05:15,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293f5422-cfa0-46fc-b697-786139fb3c61/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:05:15,906 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293f5422-cfa0-46fc-b697-786139fb3c61/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 21:05:15,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293f5422-cfa0-46fc-b697-786139fb3c61/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 21:05:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 21:05:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-21 21:05:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 21:05:15,953 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 21:05:15,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 21:05:15,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 21:05:16,049 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 21:05:16,051 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 21:05:18,480 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 21:05:18,523 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 21:05:18,523 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 21:05:18,525 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:05:18 BoogieIcfgContainer [2023-11-21 21:05:18,525 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 21:05:18,527 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 21:05:18,527 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 21:05:18,530 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 21:05:18,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:05:15" (1/3) ... [2023-11-21 21:05:18,531 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49758f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:05:18, skipping insertion in model container [2023-11-21 21:05:18,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:15" (2/3) ... [2023-11-21 21:05:18,532 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49758f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:05:18, skipping insertion in model container [2023-11-21 21:05:18,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:05:18" (3/3) ... [2023-11-21 21:05:18,533 INFO L112 eAbstractionObserver]: Analyzing ICFG filter2.c [2023-11-21 21:05:18,553 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 21:05:18,554 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 21:05:18,639 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 21:05:18,658 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=PETRI_NET, 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;@41ada29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 21:05:18,675 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 21:05:18,680 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 21:05:18,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-21 21:05:18,703 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:05:18,703 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:05:18,704 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:05:18,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:05:18,710 INFO L85 PathProgramCache]: Analyzing trace with hash -251003801, now seen corresponding path program 1 times [2023-11-21 21:05:18,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:05:18,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [349892863] [2023-11-21 21:05:18,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:05:18,724 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 21:05:18,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293f5422-cfa0-46fc-b697-786139fb3c61/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:05:18,729 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293f5422-cfa0-46fc-b697-786139fb3c61/bin/uautomizer-verify-bycVGegfSx/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 21:05:18,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293f5422-cfa0-46fc-b697-786139fb3c61/bin/uautomizer-verify-bycVGegfSx/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 21:05:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:25,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-21 21:05:25,265 INFO L285 TraceCheckSpWp]: Computing forward predicates...