./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/filter2_reinit.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86492639-8683-4363-9893-be4bf64a6490/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86492639-8683-4363-9893-be4bf64a6490/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_86492639-8683-4363-9893-be4bf64a6490/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86492639-8683-4363-9893-be4bf64a6490/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/filter2_reinit.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86492639-8683-4363-9893-be4bf64a6490/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_86492639-8683-4363-9893-be4bf64a6490/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 77348271d6b3efbe553fb980482d4643f648de35ae877e068f35f88b7419ce44 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:23:23,260 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:23:23,347 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86492639-8683-4363-9893-be4bf64a6490/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 22:23:23,364 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:23:23,365 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:23:23,409 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:23:23,410 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:23:23,411 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:23:23,413 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:23:23,419 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:23:23,419 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:23:23,420 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:23:23,420 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:23:23,422 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:23:23,423 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:23:23,423 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:23:23,424 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:23:23,424 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:23:23,425 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:23:23,425 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:23:23,425 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:23:23,426 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:23:23,426 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:23:23,427 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:23:23,427 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:23:23,428 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:23:23,428 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:23:23,429 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:23:23,429 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:23:23,430 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:23:23,431 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:23:23,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:23:23,431 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:23:23,432 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:23:23,432 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:23:23,432 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:23:23,432 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:23:23,432 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:23:23,433 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:23:23,433 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:23:23,433 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:23:23,433 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:23:23,434 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_86492639-8683-4363-9893-be4bf64a6490/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86492639-8683-4363-9893-be4bf64a6490/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77348271d6b3efbe553fb980482d4643f648de35ae877e068f35f88b7419ce44 [2023-11-21 22:23:23,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:23:23,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:23:23,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:23:23,783 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:23:23,784 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:23:23,785 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86492639-8683-4363-9893-be4bf64a6490/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/float-benchs/filter2_reinit.c [2023-11-21 22:23:27,484 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:23:27,783 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:23:27,784 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86492639-8683-4363-9893-be4bf64a6490/sv-benchmarks/c/float-benchs/filter2_reinit.c [2023-11-21 22:23:27,794 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86492639-8683-4363-9893-be4bf64a6490/bin/uautomizer-verify-bycVGegfSx/data/04fcdb295/414a3c28334f4805b511b837f8c0b2d6/FLAGe5d2b1978 [2023-11-21 22:23:27,812 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86492639-8683-4363-9893-be4bf64a6490/bin/uautomizer-verify-bycVGegfSx/data/04fcdb295/414a3c28334f4805b511b837f8c0b2d6 [2023-11-21 22:23:27,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:23:27,818 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:23:27,820 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:23:27,821 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:23:27,828 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:23:27,829 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:23:27" (1/1) ... [2023-11-21 22:23:27,831 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45ebcdae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:27, skipping insertion in model container [2023-11-21 22:23:27,831 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:23:27" (1/1) ... [2023-11-21 22:23:27,862 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:23:28,115 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_86492639-8683-4363-9893-be4bf64a6490/sv-benchmarks/c/float-benchs/filter2_reinit.c[700,713] [2023-11-21 22:23:28,139 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:23:28,150 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:23:28,167 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_86492639-8683-4363-9893-be4bf64a6490/sv-benchmarks/c/float-benchs/filter2_reinit.c[700,713] [2023-11-21 22:23:28,175 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:23:28,195 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:23:28,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:28 WrapperNode [2023-11-21 22:23:28,196 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:23:28,198 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:23:28,198 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:23:28,198 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:23:28,209 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:28" (1/1) ... [2023-11-21 22:23:28,218 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:28" (1/1) ... [2023-11-21 22:23:28,243 INFO L138 Inliner]: procedures = 15, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 61 [2023-11-21 22:23:28,244 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:23:28,245 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:23:28,245 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:23:28,245 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:23:28,256 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:28" (1/1) ... [2023-11-21 22:23:28,257 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:28" (1/1) ... [2023-11-21 22:23:28,259 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:28" (1/1) ... [2023-11-21 22:23:28,268 INFO L187 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-21 22:23:28,269 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:28" (1/1) ... [2023-11-21 22:23:28,269 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:28" (1/1) ... [2023-11-21 22:23:28,276 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:28" (1/1) ... [2023-11-21 22:23:28,280 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:28" (1/1) ... [2023-11-21 22:23:28,282 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:28" (1/1) ... [2023-11-21 22:23:28,284 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:28" (1/1) ... [2023-11-21 22:23:28,287 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:23:28,288 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:23:28,289 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:23:28,289 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:23:28,290 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:28" (1/1) ... [2023-11-21 22:23:28,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:23:28,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86492639-8683-4363-9893-be4bf64a6490/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:23:28,337 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86492639-8683-4363-9893-be4bf64a6490/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:23:28,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86492639-8683-4363-9893-be4bf64a6490/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:23:28,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:23:28,385 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 22:23:28,386 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 22:23:28,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:23:28,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:23:28,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:23:28,471 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:23:28,473 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:23:28,677 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:23:28,771 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:23:28,771 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 22:23:28,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:23:28 BoogieIcfgContainer [2023-11-21 22:23:28,774 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:23:28,778 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:23:28,778 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:23:28,783 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:23:28,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:23:27" (1/3) ... [2023-11-21 22:23:28,784 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2993b123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:23:28, skipping insertion in model container [2023-11-21 22:23:28,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:28" (2/3) ... [2023-11-21 22:23:28,785 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2993b123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:23:28, skipping insertion in model container [2023-11-21 22:23:28,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:23:28" (3/3) ... [2023-11-21 22:23:28,787 INFO L112 eAbstractionObserver]: Analyzing ICFG filter2_reinit.c [2023-11-21 22:23:28,814 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:23:28,814 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 22:23:28,874 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:23:28,883 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;@7eba5d06, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:23:28,883 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 22:23:28,889 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 22:23:28,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-21 22:23:28,900 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:23:28,901 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:23:28,901 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:23:28,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:23:28,909 INFO L85 PathProgramCache]: Analyzing trace with hash -778747718, now seen corresponding path program 1 times [2023-11-21 22:23:28,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:23:28,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652318269] [2023-11-21 22:23:28,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:23:28,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:23:29,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:23:29,112 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:23:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:23:29,221 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:23:29,223 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:23:29,225 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-21 22:23:29,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:23:29,234 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-21 22:23:29,240 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 22:23:29,264 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 10:23:29 BoogieIcfgContainer [2023-11-21 22:23:29,265 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 22:23:29,266 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:23:29,266 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:23:29,266 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:23:29,267 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:23:28" (3/4) ... [2023-11-21 22:23:29,270 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 22:23:29,272 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:23:29,274 INFO L158 Benchmark]: Toolchain (without parser) took 1455.28ms. Allocated memory is still 167.8MB. Free memory was 130.6MB in the beginning and 87.9MB in the end (delta: 42.7MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2023-11-21 22:23:29,274 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 113.2MB. Free memory is still 63.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:23:29,280 INFO L158 Benchmark]: CACSL2BoogieTranslator took 376.37ms. Allocated memory is still 167.8MB. Free memory was 130.6MB in the beginning and 119.7MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-21 22:23:29,281 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.38ms. Allocated memory is still 167.8MB. Free memory was 119.7MB in the beginning and 118.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:23:29,282 INFO L158 Benchmark]: Boogie Preprocessor took 42.29ms. Allocated memory is still 167.8MB. Free memory was 118.0MB in the beginning and 116.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:23:29,282 INFO L158 Benchmark]: RCFGBuilder took 485.84ms. Allocated memory is still 167.8MB. Free memory was 116.3MB in the beginning and 103.3MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-21 22:23:29,283 INFO L158 Benchmark]: TraceAbstraction took 486.79ms. Allocated memory is still 167.8MB. Free memory was 102.9MB in the beginning and 88.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-21 22:23:29,284 INFO L158 Benchmark]: Witness Printer took 6.46ms. Allocated memory is still 167.8MB. Free memory is still 87.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:23:29,288 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 113.2MB. Free memory is still 63.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 376.37ms. Allocated memory is still 167.8MB. Free memory was 130.6MB in the beginning and 119.7MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.38ms. Allocated memory is still 167.8MB. Free memory was 119.7MB in the beginning and 118.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.29ms. Allocated memory is still 167.8MB. Free memory was 118.0MB in the beginning and 116.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 485.84ms. Allocated memory is still 167.8MB. Free memory was 116.3MB in the beginning and 103.3MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 486.79ms. Allocated memory is still 167.8MB. Free memory was 102.9MB in the beginning and 88.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 6.46ms. Allocated memory is still 167.8MB. Free memory is still 87.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 18]: 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 53, overapproximation of to_real at line 31, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51. Possible FailurePath: [L23] double E, E0, E1, S0, S1, S; [L24] int i; [L26] E = __VERIFIER_nondet_double() [L27] E0 = __VERIFIER_nondet_double() [L28] CALL assume_abort_if_not(E >= 0. && E <= 1.) VAL [\old(cond)=1] [L16] COND FALSE !(!cond) [L28] RET assume_abort_if_not(E >= 0. && E <= 1.) [L29] CALL assume_abort_if_not(E0 >= 0. && E0 <= 1.) VAL [\old(cond)=1] [L16] COND FALSE !(!cond) [L29] RET assume_abort_if_not(E0 >= 0. && E0 <= 1.) [L31] S0 = 0 [L32] S = 0 [L34] i = 0 VAL [i=0] [L34] COND TRUE i <= 1000000 [L36] E1 = E0 [L37] E0 = E [L39] E = __VERIFIER_nondet_double() [L40] CALL assume_abort_if_not(E >= 0. && E <= 1.) VAL [\old(cond)=1] [L16] COND FALSE !(!cond) [L40] RET assume_abort_if_not(E >= 0. && E <= 1.) VAL [E=53, E=53, i=0] [L42] COND TRUE __VERIFIER_nondet_int() [L43] E1 = E [L44] E0 = E [L45] S0 = E [L46] S = E [L49] S1 = S0 [L50] S0 = S [L51] S = 0.7*E - E0*1.3 + E1*1.1 + S0*1.4 - S1*0.7 [L53] CALL __VERIFIER_assert(S >= -4. && S <= 4.) [L18] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L18] 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: 0.4s, 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 22:23:29,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86492639-8683-4363-9893-be4bf64a6490/bin/uautomizer-verify-bycVGegfSx/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86492639-8683-4363-9893-be4bf64a6490/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86492639-8683-4363-9893-be4bf64a6490/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_86492639-8683-4363-9893-be4bf64a6490/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86492639-8683-4363-9893-be4bf64a6490/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/filter2_reinit.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86492639-8683-4363-9893-be4bf64a6490/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_86492639-8683-4363-9893-be4bf64a6490/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 77348271d6b3efbe553fb980482d4643f648de35ae877e068f35f88b7419ce44 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:23:32,713 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:23:32,885 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86492639-8683-4363-9893-be4bf64a6490/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-21 22:23:32,895 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:23:32,896 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:23:32,951 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:23:32,952 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:23:32,953 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:23:32,954 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:23:32,960 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:23:32,961 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:23:32,962 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:23:32,963 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:23:32,965 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:23:32,965 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:23:32,966 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:23:32,967 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:23:32,967 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:23:32,968 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:23:32,969 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:23:32,970 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:23:32,970 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:23:32,971 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:23:32,971 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:23:32,972 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 22:23:32,972 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 22:23:32,973 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:23:32,973 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:23:32,974 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:23:32,974 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:23:32,976 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:23:32,976 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:23:32,977 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:23:32,977 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:23:32,977 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:23:32,978 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:23:32,979 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:23:32,979 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-21 22:23:32,979 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 22:23:32,980 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:23:32,980 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:23:32,980 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:23:32,981 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:23:32,981 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:23:32,981 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-21 22:23:32,982 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_86492639-8683-4363-9893-be4bf64a6490/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86492639-8683-4363-9893-be4bf64a6490/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77348271d6b3efbe553fb980482d4643f648de35ae877e068f35f88b7419ce44 [2023-11-21 22:23:33,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:23:33,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:23:33,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:23:33,517 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:23:33,519 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:23:33,524 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86492639-8683-4363-9893-be4bf64a6490/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/float-benchs/filter2_reinit.c [2023-11-21 22:23:37,413 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:23:37,791 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:23:37,792 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86492639-8683-4363-9893-be4bf64a6490/sv-benchmarks/c/float-benchs/filter2_reinit.c [2023-11-21 22:23:37,803 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86492639-8683-4363-9893-be4bf64a6490/bin/uautomizer-verify-bycVGegfSx/data/ab66fac52/d1ae910e76ac4595b82fa12e38675c51/FLAG24798f669 [2023-11-21 22:23:37,825 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86492639-8683-4363-9893-be4bf64a6490/bin/uautomizer-verify-bycVGegfSx/data/ab66fac52/d1ae910e76ac4595b82fa12e38675c51 [2023-11-21 22:23:37,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:23:37,829 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:23:37,831 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:23:37,831 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:23:37,836 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:23:37,837 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:23:37" (1/1) ... [2023-11-21 22:23:37,839 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4506f43d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:37, skipping insertion in model container [2023-11-21 22:23:37,839 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:23:37" (1/1) ... [2023-11-21 22:23:37,865 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:23:38,100 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_86492639-8683-4363-9893-be4bf64a6490/sv-benchmarks/c/float-benchs/filter2_reinit.c[700,713] [2023-11-21 22:23:38,131 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:23:38,157 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:23:38,179 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_86492639-8683-4363-9893-be4bf64a6490/sv-benchmarks/c/float-benchs/filter2_reinit.c[700,713] [2023-11-21 22:23:38,205 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:23:38,236 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:23:38,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:38 WrapperNode [2023-11-21 22:23:38,237 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:23:38,239 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:23:38,239 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:23:38,239 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:23:38,249 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:38" (1/1) ... [2023-11-21 22:23:38,278 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:38" (1/1) ... [2023-11-21 22:23:38,315 INFO L138 Inliner]: procedures = 16, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 61 [2023-11-21 22:23:38,316 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:23:38,318 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:23:38,318 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:23:38,318 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:23:38,332 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:38" (1/1) ... [2023-11-21 22:23:38,333 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:38" (1/1) ... [2023-11-21 22:23:38,346 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:38" (1/1) ... [2023-11-21 22:23:38,378 INFO L187 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-21 22:23:38,378 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:38" (1/1) ... [2023-11-21 22:23:38,379 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:38" (1/1) ... [2023-11-21 22:23:38,399 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:38" (1/1) ... [2023-11-21 22:23:38,404 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:38" (1/1) ... [2023-11-21 22:23:38,413 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:38" (1/1) ... [2023-11-21 22:23:38,417 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:38" (1/1) ... [2023-11-21 22:23:38,425 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:23:38,431 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:23:38,432 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:23:38,432 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:23:38,433 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:38" (1/1) ... [2023-11-21 22:23:38,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:23:38,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86492639-8683-4363-9893-be4bf64a6490/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:23:38,471 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86492639-8683-4363-9893-be4bf64a6490/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:23:38,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86492639-8683-4363-9893-be4bf64a6490/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:23:38,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:23:38,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-21 22:23:38,525 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 22:23:38,525 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 22:23:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:23:38,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:23:38,648 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:23:38,651 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:23:41,193 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:23:41,282 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:23:41,283 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 22:23:41,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:23:41 BoogieIcfgContainer [2023-11-21 22:23:41,285 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:23:41,289 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:23:41,289 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:23:41,293 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:23:41,294 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:23:37" (1/3) ... [2023-11-21 22:23:41,295 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61be13b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:23:41, skipping insertion in model container [2023-11-21 22:23:41,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:38" (2/3) ... [2023-11-21 22:23:41,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61be13b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:23:41, skipping insertion in model container [2023-11-21 22:23:41,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:23:41" (3/3) ... [2023-11-21 22:23:41,298 INFO L112 eAbstractionObserver]: Analyzing ICFG filter2_reinit.c [2023-11-21 22:23:41,323 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:23:41,323 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 22:23:41,381 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:23:41,390 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;@2d881ff2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:23:41,390 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 22:23:41,397 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 22:23:41,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-21 22:23:41,408 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:23:41,409 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:23:41,409 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:23:41,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:23:41,417 INFO L85 PathProgramCache]: Analyzing trace with hash -778747718, now seen corresponding path program 1 times [2023-11-21 22:23:41,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:23:41,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [197325189] [2023-11-21 22:23:41,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:23:41,436 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 22:23:41,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86492639-8683-4363-9893-be4bf64a6490/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:23:41,444 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86492639-8683-4363-9893-be4bf64a6490/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 22:23:41,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86492639-8683-4363-9893-be4bf64a6490/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 22:24:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:11,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-21 22:24:11,042 INFO L285 TraceCheckSpWp]: Computing forward predicates...