./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_6ccde0a0-d31e-472a-9165-891f97514b52/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccde0a0-d31e-472a-9165-891f97514b52/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccde0a0-d31e-472a-9165-891f97514b52/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccde0a0-d31e-472a-9165-891f97514b52/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccde0a0-d31e-472a-9165-891f97514b52/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccde0a0-d31e-472a-9165-891f97514b52/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7887c90df48e0e32a16c0ae4217eb11a41b3b1af1e02493e847dc25239198c19 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:18:19,095 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:18:19,215 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccde0a0-d31e-472a-9165-891f97514b52/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 05:18:19,227 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:18:19,228 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:18:19,282 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:18:19,283 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:18:19,284 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:18:19,285 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:18:19,287 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:18:19,288 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:18:19,289 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:18:19,290 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:18:19,291 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:18:19,292 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:18:19,293 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:18:19,293 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:18:19,294 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:18:19,295 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:18:19,295 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:18:19,296 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:18:19,297 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:18:19,298 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:18:19,299 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:18:19,299 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:18:19,300 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:18:19,301 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:18:19,301 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:18:19,302 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:18:19,303 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:18:19,303 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:18:19,304 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:18:19,304 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:18:19,305 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:18:19,305 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:18:19,306 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:18:19,307 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:18:19,307 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:18:19,308 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:18:19,308 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:18:19,309 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:18:19,310 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:18:19,311 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:18:19,311 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:18:19,313 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:18:19,313 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:18:19,313 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:18:19,314 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccde0a0-d31e-472a-9165-891f97514b52/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccde0a0-d31e-472a-9165-891f97514b52/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7887c90df48e0e32a16c0ae4217eb11a41b3b1af1e02493e847dc25239198c19 [2023-11-19 05:18:19,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:18:19,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:18:19,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:18:19,729 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:18:19,730 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:18:19,731 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccde0a0-d31e-472a-9165-891f97514b52/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i [2023-11-19 05:18:23,258 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:18:23,575 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:18:23,576 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccde0a0-d31e-472a-9165-891f97514b52/sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i [2023-11-19 05:18:23,595 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccde0a0-d31e-472a-9165-891f97514b52/bin/utaipan-verify-t7M7D8N6sZ/data/1ce06c42f/02a2968bb8a2403caf2019d551721292/FLAG59535d439 [2023-11-19 05:18:23,617 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccde0a0-d31e-472a-9165-891f97514b52/bin/utaipan-verify-t7M7D8N6sZ/data/1ce06c42f/02a2968bb8a2403caf2019d551721292 [2023-11-19 05:18:23,620 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:18:23,622 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:18:23,625 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:18:23,625 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:18:23,634 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:18:23,635 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:18:23" (1/1) ... [2023-11-19 05:18:23,637 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47f0d1f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:23, skipping insertion in model container [2023-11-19 05:18:23,638 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:18:23" (1/1) ... [2023-11-19 05:18:23,729 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:18:24,137 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:18:24,153 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:18:24,210 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:18:24,252 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:18:24,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:24 WrapperNode [2023-11-19 05:18:24,253 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:18:24,255 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:18:24,255 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:18:24,256 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:18:24,266 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:24" (1/1) ... [2023-11-19 05:18:24,310 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:24" (1/1) ... [2023-11-19 05:18:24,358 INFO L138 Inliner]: procedures = 123, calls = 26, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 117 [2023-11-19 05:18:24,358 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:18:24,359 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:18:24,360 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:18:24,360 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:18:24,372 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:24" (1/1) ... [2023-11-19 05:18:24,373 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:24" (1/1) ... [2023-11-19 05:18:24,386 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:24" (1/1) ... [2023-11-19 05:18:24,386 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:24" (1/1) ... [2023-11-19 05:18:24,412 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:24" (1/1) ... [2023-11-19 05:18:24,417 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:24" (1/1) ... [2023-11-19 05:18:24,419 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:24" (1/1) ... [2023-11-19 05:18:24,422 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:24" (1/1) ... [2023-11-19 05:18:24,426 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:18:24,427 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:18:24,427 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:18:24,427 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:18:24,429 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:24" (1/1) ... [2023-11-19 05:18:24,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:18:24,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccde0a0-d31e-472a-9165-891f97514b52/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:18:24,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccde0a0-d31e-472a-9165-891f97514b52/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:18:24,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccde0a0-d31e-472a-9165-891f97514b52/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:18:24,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:18:24,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:18:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:18:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:18:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:18:24,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:18:24,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:18:24,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:18:24,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:18:24,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:18:24,711 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:18:24,715 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:18:25,022 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:18:25,135 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:18:25,135 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 05:18:25,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:18:25 BoogieIcfgContainer [2023-11-19 05:18:25,141 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:18:25,145 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:18:25,145 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:18:25,149 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:18:25,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:18:23" (1/3) ... [2023-11-19 05:18:25,151 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a64aef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:18:25, skipping insertion in model container [2023-11-19 05:18:25,151 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:24" (2/3) ... [2023-11-19 05:18:25,152 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a64aef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:18:25, skipping insertion in model container [2023-11-19 05:18:25,152 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:18:25" (3/3) ... [2023-11-19 05:18:25,154 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_nullified-1.i [2023-11-19 05:18:25,179 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:18:25,180 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 05:18:25,252 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:18:25,259 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@d7dedf5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:18:25,259 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 05:18:25,296 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:18:25,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 05:18:25,303 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:18:25,304 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 05:18:25,305 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-19 05:18:25,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:18:25,312 INFO L85 PathProgramCache]: Analyzing trace with hash 4274710, now seen corresponding path program 1 times [2023-11-19 05:18:25,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:18:25,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36605675] [2023-11-19 05:18:25,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:18:25,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:18:25,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:18:25,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:18:25,724 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:18:25,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36605675] [2023-11-19 05:18:25,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36605675] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:18:25,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:18:25,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:18:25,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45763835] [2023-11-19 05:18:25,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:18:25,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:18:25,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:18:25,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:18:25,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:18:25,778 INFO L87 Difference]: Start difference. First operand has 16 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:18:26,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:18:26,006 INFO L93 Difference]: Finished difference Result 25 states and 36 transitions. [2023-11-19 05:18:26,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:18:26,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 05:18:26,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:18:26,018 INFO L225 Difference]: With dead ends: 25 [2023-11-19 05:18:26,018 INFO L226 Difference]: Without dead ends: 7 [2023-11-19 05:18:26,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:18:26,026 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 7 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:18:26,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 22 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:18:26,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2023-11-19 05:18:26,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2023-11-19 05:18:26,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:18:26,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2023-11-19 05:18:26,062 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2023-11-19 05:18:26,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:18:26,063 INFO L495 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2023-11-19 05:18:26,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:18:26,063 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2023-11-19 05:18:26,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:18:26,064 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:18:26,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:18:26,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:18:26,065 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-19 05:18:26,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:18:26,066 INFO L85 PathProgramCache]: Analyzing trace with hash 132516070, now seen corresponding path program 1 times [2023-11-19 05:18:26,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:18:26,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285645943] [2023-11-19 05:18:26,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:18:26,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:18:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:18:26,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:18:26,338 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:18:26,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285645943] [2023-11-19 05:18:26,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285645943] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:18:26,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:18:26,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:18:26,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711331485] [2023-11-19 05:18:26,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:18:26,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:18:26,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:18:26,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:18:26,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:18:26,344 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:18:26,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:18:26,421 INFO L93 Difference]: Finished difference Result 6 states and 6 transitions. [2023-11-19 05:18:26,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:18:26,421 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 05:18:26,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:18:26,422 INFO L225 Difference]: With dead ends: 6 [2023-11-19 05:18:26,422 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 05:18:26,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:18:26,424 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:18:26,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:18:26,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 05:18:26,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 05:18:26,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:18:26,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 05:18:26,427 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2023-11-19 05:18:26,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:18:26,427 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 05:18:26,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:18:26,428 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 05:18:26,428 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 05:18:26,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-19 05:18:26,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-19 05:18:26,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:18:26,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 05:18:26,448 INFO L899 garLoopResultBuilder]: For program point L576(line 576) no Hoare annotation was computed. [2023-11-19 05:18:26,448 INFO L899 garLoopResultBuilder]: For program point L609-5(lines 609 611) no Hoare annotation was computed. [2023-11-19 05:18:26,448 INFO L899 garLoopResultBuilder]: For program point L601-1(lines 601 606) no Hoare annotation was computed. [2023-11-19 05:18:26,448 INFO L902 garLoopResultBuilder]: At program point L601-3(lines 601 606) the Hoare annotation is: true [2023-11-19 05:18:26,448 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 598 618) no Hoare annotation was computed. [2023-11-19 05:18:26,449 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 594) no Hoare annotation was computed. [2023-11-19 05:18:26,449 INFO L899 garLoopResultBuilder]: For program point L602-5(lines 602 604) no Hoare annotation was computed. [2023-11-19 05:18:26,449 INFO L899 garLoopResultBuilder]: For program point L594(line 594) no Hoare annotation was computed. [2023-11-19 05:18:26,449 INFO L899 garLoopResultBuilder]: For program point L594-1(line 594) no Hoare annotation was computed. [2023-11-19 05:18:26,449 INFO L899 garLoopResultBuilder]: For program point L582(lines 582 584) no Hoare annotation was computed. [2023-11-19 05:18:26,450 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 594) no Hoare annotation was computed. [2023-11-19 05:18:26,450 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 05:18:26,450 INFO L902 garLoopResultBuilder]: At program point L607-1(lines 607 614) the Hoare annotation is: true [2023-11-19 05:18:26,450 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 05:18:26,451 INFO L899 garLoopResultBuilder]: For program point main_ERROR#1(lines 598 618) no Hoare annotation was computed. [2023-11-19 05:18:26,451 INFO L895 garLoopResultBuilder]: At program point L580-2(lines 580 595) the Hoare annotation is: (<= |ULTIMATE.start_dll_create_~len#1| 5) [2023-11-19 05:18:26,455 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 05:18:26,457 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:18:26,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:18:26 BoogieIcfgContainer [2023-11-19 05:18:26,471 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:18:26,472 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:18:26,472 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:18:26,472 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:18:26,473 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:18:25" (3/4) ... [2023-11-19 05:18:26,475 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 05:18:26,485 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2023-11-19 05:18:26,486 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2023-11-19 05:18:26,486 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 05:18:26,487 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 05:18:26,597 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccde0a0-d31e-472a-9165-891f97514b52/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 05:18:26,597 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccde0a0-d31e-472a-9165-891f97514b52/bin/utaipan-verify-t7M7D8N6sZ/witness.yml [2023-11-19 05:18:26,597 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:18:26,598 INFO L158 Benchmark]: Toolchain (without parser) took 2976.00ms. Allocated memory is still 138.4MB. Free memory was 93.0MB in the beginning and 58.9MB in the end (delta: 34.1MB). Peak memory consumption was 33.9MB. Max. memory is 16.1GB. [2023-11-19 05:18:26,599 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 138.4MB. Free memory is still 110.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:18:26,599 INFO L158 Benchmark]: CACSL2BoogieTranslator took 629.21ms. Allocated memory is still 138.4MB. Free memory was 92.7MB in the beginning and 76.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 05:18:26,600 INFO L158 Benchmark]: Boogie Procedure Inliner took 103.68ms. Allocated memory is still 138.4MB. Free memory was 75.4MB in the beginning and 73.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:18:26,600 INFO L158 Benchmark]: Boogie Preprocessor took 66.64ms. Allocated memory is still 138.4MB. Free memory was 73.9MB in the beginning and 72.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:18:26,600 INFO L158 Benchmark]: RCFGBuilder took 714.05ms. Allocated memory is still 138.4MB. Free memory was 72.1MB in the beginning and 49.6MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-19 05:18:26,601 INFO L158 Benchmark]: TraceAbstraction took 1326.32ms. Allocated memory is still 138.4MB. Free memory was 49.0MB in the beginning and 64.4MB in the end (delta: -15.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:18:26,601 INFO L158 Benchmark]: Witness Printer took 125.93ms. Allocated memory is still 138.4MB. Free memory was 64.4MB in the beginning and 58.9MB in the end (delta: 5.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 05:18:26,603 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 138.4MB. Free memory is still 110.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 629.21ms. Allocated memory is still 138.4MB. Free memory was 92.7MB in the beginning and 76.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 103.68ms. Allocated memory is still 138.4MB. Free memory was 75.4MB in the beginning and 73.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 66.64ms. Allocated memory is still 138.4MB. Free memory was 73.9MB in the beginning and 72.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 714.05ms. Allocated memory is still 138.4MB. Free memory was 72.1MB in the beginning and 49.6MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 1326.32ms. Allocated memory is still 138.4MB. Free memory was 49.0MB in the beginning and 64.4MB in the end (delta: -15.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 125.93ms. Allocated memory is still 138.4MB. Free memory was 64.4MB in the beginning and 58.9MB in the end (delta: 5.5MB). Peak memory consumption was 4.2MB. 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 - PositiveResult [Line: 594]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 594]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 33 IncrementalHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 8 mSDtfsCounter, 33 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 5 NumberOfFragments, 5 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 580]: Loop Invariant Derived loop invariant: (len <= 5) - InvariantResult [Line: 601]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 607]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-11-19 05:18:26,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccde0a0-d31e-472a-9165-891f97514b52/bin/utaipan-verify-t7M7D8N6sZ/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 Writing output log to file Ultimate.log Result: TRUE