./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bit-vector.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bit-vector.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 860a86adaee5a68a8179b30e590ccdfc140c947e3c27f31baed5d0226260962e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:22:37,100 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:22:37,168 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:22:37,174 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:22:37,175 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:22:37,222 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:22:37,223 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:22:37,223 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:22:37,224 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:22:37,225 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:22:37,225 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:22:37,226 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:22:37,227 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:22:37,227 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:22:37,228 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:22:37,229 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:22:37,229 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:22:37,230 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:22:37,245 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:22:37,246 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:22:37,247 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:22:37,247 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:22:37,248 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:22:37,249 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:22:37,249 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:22:37,249 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:22:37,250 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:22:37,250 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:22:37,251 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:22:37,251 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:22:37,252 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:22:37,252 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:22:37,253 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:22:37,253 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:22:37,253 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:22:37,253 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:22:37,254 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:22:37,254 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:22:37,254 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:22:37,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:22:37,255 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:22:37,255 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:22:37,255 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:22:37,255 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:22:37,256 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_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 860a86adaee5a68a8179b30e590ccdfc140c947e3c27f31baed5d0226260962e [2023-11-23 21:22:37,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:22:37,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:22:37,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:22:37,546 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:22:37,546 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:22:37,548 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bit-vector.c [2023-11-23 21:22:40,771 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:22:40,978 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:22:40,979 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bit-vector.c [2023-11-23 21:22:40,988 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/data/175658d5b/193857fbd3eb4f02ac6285e426fce60d/FLAGa8fc88608 [2023-11-23 21:22:41,003 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/data/175658d5b/193857fbd3eb4f02ac6285e426fce60d [2023-11-23 21:22:41,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:22:41,016 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:22:41,019 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:22:41,019 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:22:41,025 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:22:41,026 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:22:41" (1/1) ... [2023-11-23 21:22:41,027 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35ae2b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:41, skipping insertion in model container [2023-11-23 21:22:41,028 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:22:41" (1/1) ... [2023-11-23 21:22:41,061 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:22:41,266 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_fac9cfd0-74c5-40b6-99d0-25092084227c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bit-vector.c[1250,1263] [2023-11-23 21:22:41,317 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:22:41,333 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:22:41,352 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_fac9cfd0-74c5-40b6-99d0-25092084227c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bit-vector.c[1250,1263] [2023-11-23 21:22:41,380 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:22:41,399 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:22:41,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:41 WrapperNode [2023-11-23 21:22:41,400 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:22:41,401 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:22:41,401 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:22:41,402 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:22:41,409 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:41" (1/1) ... [2023-11-23 21:22:41,433 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:41" (1/1) ... [2023-11-23 21:22:41,491 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 171 [2023-11-23 21:22:41,492 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:22:41,493 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:22:41,493 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:22:41,493 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:22:41,503 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:41" (1/1) ... [2023-11-23 21:22:41,504 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:41" (1/1) ... [2023-11-23 21:22:41,508 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:41" (1/1) ... [2023-11-23 21:22:41,509 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:41" (1/1) ... [2023-11-23 21:22:41,522 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:41" (1/1) ... [2023-11-23 21:22:41,526 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:41" (1/1) ... [2023-11-23 21:22:41,529 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:41" (1/1) ... [2023-11-23 21:22:41,532 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:41" (1/1) ... [2023-11-23 21:22:41,545 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:22:41,546 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:22:41,546 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:22:41,547 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:22:41,548 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:41" (1/1) ... [2023-11-23 21:22:41,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:22:41,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:41,592 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:22:41,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:22:41,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:22:41,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:22:41,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:22:41,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:22:41,759 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:22:41,761 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:22:42,233 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:22:42,569 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:22:42,569 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:22:42,571 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:42 BoogieIcfgContainer [2023-11-23 21:22:42,571 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:22:42,574 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:22:42,574 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:22:42,578 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:22:42,578 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:22:41" (1/3) ... [2023-11-23 21:22:42,579 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dc63fde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:22:42, skipping insertion in model container [2023-11-23 21:22:42,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:41" (2/3) ... [2023-11-23 21:22:42,580 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dc63fde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:22:42, skipping insertion in model container [2023-11-23 21:22:42,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:42" (3/3) ... [2023-11-23 21:22:42,582 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.bit-vector.c [2023-11-23 21:22:42,603 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:22:42,603 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:22:42,653 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:22:42,660 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;@3540fe04, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:22:42,661 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:22:42,665 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:42,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 21:22:42,672 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:42,673 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 21:22:42,673 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:42,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:42,679 INFO L85 PathProgramCache]: Analyzing trace with hash 6255565, now seen corresponding path program 1 times [2023-11-23 21:22:42,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:42,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257397380] [2023-11-23 21:22:42,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:42,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:43,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:22:43,044 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:22:43,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:22:43,229 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:22:43,231 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:22:43,232 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:22:43,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:22:43,240 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:22:43,246 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:22:43,266 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-23 21:22:43,278 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:22:43 BoogieIcfgContainer [2023-11-23 21:22:43,278 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:22:43,280 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:22:43,281 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:22:43,281 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:22:43,282 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:42" (3/4) ... [2023-11-23 21:22:43,286 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:22:43,287 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:22:43,289 INFO L158 Benchmark]: Toolchain (without parser) took 2272.92ms. Allocated memory was 127.9MB in the beginning and 192.9MB in the end (delta: 65.0MB). Free memory was 83.3MB in the beginning and 110.0MB in the end (delta: -26.7MB). Peak memory consumption was 39.7MB. Max. memory is 16.1GB. [2023-11-23 21:22:43,289 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 127.9MB. Free memory was 94.9MB in the beginning and 94.8MB in the end (delta: 78.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:22:43,291 INFO L158 Benchmark]: CACSL2BoogieTranslator took 381.45ms. Allocated memory is still 127.9MB. Free memory was 83.0MB in the beginning and 70.7MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 21:22:43,291 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.81ms. Allocated memory is still 127.9MB. Free memory was 70.7MB in the beginning and 66.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 21:22:43,297 INFO L158 Benchmark]: Boogie Preprocessor took 52.68ms. Allocated memory is still 127.9MB. Free memory was 66.5MB in the beginning and 64.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:22:43,298 INFO L158 Benchmark]: RCFGBuilder took 1025.21ms. Allocated memory was 127.9MB in the beginning and 192.9MB in the end (delta: 65.0MB). Free memory was 64.4MB in the beginning and 136.3MB in the end (delta: -71.9MB). Peak memory consumption was 35.5MB. Max. memory is 16.1GB. [2023-11-23 21:22:43,299 INFO L158 Benchmark]: TraceAbstraction took 704.71ms. Allocated memory is still 192.9MB. Free memory was 135.2MB in the beginning and 110.0MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-23 21:22:43,299 INFO L158 Benchmark]: Witness Printer took 7.04ms. Allocated memory is still 192.9MB. Free memory is still 110.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:22:43,308 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 127.9MB. Free memory was 94.9MB in the beginning and 94.8MB in the end (delta: 78.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 381.45ms. Allocated memory is still 127.9MB. Free memory was 83.0MB in the beginning and 70.7MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.81ms. Allocated memory is still 127.9MB. Free memory was 70.7MB in the beginning and 66.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.68ms. Allocated memory is still 127.9MB. Free memory was 66.5MB in the beginning and 64.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1025.21ms. Allocated memory was 127.9MB in the beginning and 192.9MB in the end (delta: 65.0MB). Free memory was 64.4MB in the beginning and 136.3MB in the end (delta: -71.9MB). Peak memory consumption was 35.5MB. Max. memory is 16.1GB. * TraceAbstraction took 704.71ms. Allocated memory is still 192.9MB. Free memory was 135.2MB in the beginning and 110.0MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 7.04ms. Allocated memory is still 192.9MB. Free memory is still 110.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: 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 bitwiseAnd at line 58. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 3); [L30] const SORT_3 msb_SORT_3 = (SORT_3)1 << (3 - 1); [L32] const SORT_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 32); [L33] const SORT_7 msb_SORT_7 = (SORT_7)1 << (32 - 1); [L35] const SORT_21 mask_SORT_21 = (SORT_21)-1 >> (sizeof(SORT_21) * 8 - 2); [L36] const SORT_21 msb_SORT_21 = (SORT_21)1 << (2 - 1); [L38] const SORT_3 var_4 = 2; [L39] const SORT_7 var_9 = 2; [L40] const SORT_1 var_13 = 1; [L41] const SORT_3 var_17 = 6; [L43] SORT_1 input_2; [L45] EXPR __VERIFIER_nondet_uchar() & mask_SORT_3 [L45] SORT_3 state_5 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L46] EXPR __VERIFIER_nondet_uchar() & mask_SORT_3 [L46] SORT_3 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L48] SORT_3 init_6_arg_1 = var_4; [L49] state_5 = init_6_arg_1 [L50] SORT_3 init_19_arg_1 = var_17; [L51] state_18 = init_19_arg_1 VAL [init_19_arg_1=6, init_6_arg_1=2, mask_SORT_1=1, mask_SORT_21=3, mask_SORT_3=7, mask_SORT_7=4294967295, msb_SORT_1=1, msb_SORT_21=2, msb_SORT_3=4, msb_SORT_7=2147483648, state_18=6, state_5=2, var_13=1, var_17=6, var_4=2, var_9=2] [L54] input_2 = __VERIFIER_nondet_uchar() [L57] SORT_3 var_8_arg_0 = state_5; [L58] EXPR var_8_arg_0 & mask_SORT_3 [L58] var_8_arg_0 = var_8_arg_0 & mask_SORT_3 [L59] SORT_7 var_8 = var_8_arg_0; [L60] SORT_7 var_10_arg_0 = var_8; [L61] SORT_7 var_10_arg_1 = var_9; [L62] SORT_1 var_10 = var_10_arg_0 >= var_10_arg_1; [L63] SORT_1 var_14_arg_0 = var_10; [L64] SORT_1 var_14 = ~var_14_arg_0; [L65] SORT_1 var_15_arg_0 = var_13; [L66] SORT_1 var_15_arg_1 = var_14; [L67] EXPR var_15_arg_0 & var_15_arg_1 [L67] SORT_1 var_15 = var_15_arg_0 & var_15_arg_1; [L68] EXPR var_15 & mask_SORT_1 [L68] var_15 = var_15 & mask_SORT_1 [L69] SORT_1 bad_16_arg_0 = var_15; [L70] CALL __VERIFIER_assert(!(bad_16_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, 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=7occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 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 [2023-11-23 21:22:43,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bit-vector.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 860a86adaee5a68a8179b30e590ccdfc140c947e3c27f31baed5d0226260962e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:22:46,088 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:22:46,211 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2023-11-23 21:22:46,220 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:22:46,221 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:22:46,266 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:22:46,267 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:22:46,267 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:22:46,268 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:22:46,273 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:22:46,274 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:22:46,274 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:22:46,274 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:22:46,276 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:22:46,276 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:22:46,277 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:22:46,278 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:22:46,278 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:22:46,279 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:22:46,280 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:22:46,280 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:22:46,281 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:22:46,281 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:22:46,281 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:22:46,282 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:22:46,282 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:22:46,283 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:22:46,283 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:22:46,284 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:22:46,284 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:22:46,285 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:22:46,286 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:22:46,286 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:22:46,286 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:22:46,287 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:22:46,287 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:22:46,287 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:22:46,287 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:22:46,288 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:22:46,289 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:22:46,289 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:22:46,289 INFO L153 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 860a86adaee5a68a8179b30e590ccdfc140c947e3c27f31baed5d0226260962e [2023-11-23 21:22:46,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:22:46,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:22:46,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:22:46,751 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:22:46,751 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:22:46,753 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bit-vector.c [2023-11-23 21:22:50,159 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:22:50,494 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:22:50,495 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bit-vector.c [2023-11-23 21:22:50,506 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/data/c268f669e/1b8e82fa15ae496aba92833fa9de328b/FLAGe68849841 [2023-11-23 21:22:50,527 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/data/c268f669e/1b8e82fa15ae496aba92833fa9de328b [2023-11-23 21:22:50,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:22:50,535 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:22:50,539 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:22:50,539 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:22:50,545 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:22:50,545 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:22:50" (1/1) ... [2023-11-23 21:22:50,547 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b49fc38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:50, skipping insertion in model container [2023-11-23 21:22:50,547 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:22:50" (1/1) ... [2023-11-23 21:22:50,579 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:22:50,786 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_fac9cfd0-74c5-40b6-99d0-25092084227c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bit-vector.c[1250,1263] [2023-11-23 21:22:50,857 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:22:50,876 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:22:50,894 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_fac9cfd0-74c5-40b6-99d0-25092084227c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bit-vector.c[1250,1263] [2023-11-23 21:22:50,935 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:22:50,955 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:22:50,956 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:50 WrapperNode [2023-11-23 21:22:50,956 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:22:50,958 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:22:50,958 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:22:50,959 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:22:50,966 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:50" (1/1) ... [2023-11-23 21:22:50,984 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:50" (1/1) ... [2023-11-23 21:22:51,021 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2023-11-23 21:22:51,022 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:22:51,024 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:22:51,024 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:22:51,024 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:22:51,034 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:50" (1/1) ... [2023-11-23 21:22:51,034 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:50" (1/1) ... [2023-11-23 21:22:51,049 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:50" (1/1) ... [2023-11-23 21:22:51,050 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:50" (1/1) ... [2023-11-23 21:22:51,056 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:50" (1/1) ... [2023-11-23 21:22:51,066 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:50" (1/1) ... [2023-11-23 21:22:51,073 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:50" (1/1) ... [2023-11-23 21:22:51,075 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:50" (1/1) ... [2023-11-23 21:22:51,078 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:22:51,079 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:22:51,079 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:22:51,079 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:22:51,080 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:50" (1/1) ... [2023-11-23 21:22:51,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:22:51,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:51,133 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:22:51,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:22:51,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:22:51,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:22:51,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:22:51,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:22:51,283 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:22:51,285 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:22:51,569 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:22:51,609 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:22:51,609 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:22:51,610 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:51 BoogieIcfgContainer [2023-11-23 21:22:51,610 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:22:51,613 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:22:51,613 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:22:51,617 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:22:51,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:22:50" (1/3) ... [2023-11-23 21:22:51,618 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2adc850f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:22:51, skipping insertion in model container [2023-11-23 21:22:51,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:50" (2/3) ... [2023-11-23 21:22:51,619 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2adc850f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:22:51, skipping insertion in model container [2023-11-23 21:22:51,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:51" (3/3) ... [2023-11-23 21:22:51,620 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.bit-vector.c [2023-11-23 21:22:51,642 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:22:51,643 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:22:51,688 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:22:51,694 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;@ca6faec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:22:51,694 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:22:51,699 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:51,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 21:22:51,706 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:51,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 21:22:51,707 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:51,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:51,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-11-23 21:22:51,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:22:51,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [127943697] [2023-11-23 21:22:51,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:51,730 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:22:51,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:22:51,735 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:22:51,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-23 21:22:51,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:51,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-23 21:22:51,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:52,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:52,193 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:22:52,194 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:22:52,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [127943697] [2023-11-23 21:22:52,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [127943697] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:52,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:52,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:22:52,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605542603] [2023-11-23 21:22:52,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:52,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:22:52,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:22:52,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:22:52,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:22:52,235 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 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, 4 states have (on average 1.0) internal successors, (4), 3 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) [2023-11-23 21:22:52,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:52,294 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2023-11-23 21:22:52,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:22:52,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 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 [2023-11-23 21:22:52,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:52,304 INFO L225 Difference]: With dead ends: 16 [2023-11-23 21:22:52,305 INFO L226 Difference]: Without dead ends: 9 [2023-11-23 21:22:52,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:22:52,311 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:52,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:22:52,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-23 21:22:52,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-11-23 21:22:52,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:52,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-11-23 21:22:52,346 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-11-23 21:22:52,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:52,346 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-11-23 21:22:52,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 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) [2023-11-23 21:22:52,347 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-11-23 21:22:52,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 21:22:52,348 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:52,348 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-23 21:22:52,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-23 21:22:52,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:22:52,551 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:52,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:52,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-11-23 21:22:52,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:22:52,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [157230539] [2023-11-23 21:22:52,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:52,553 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:22:52,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:22:52,555 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:22:52,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-23 21:22:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:52,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-23 21:22:52,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:52,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:52,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:22:53,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:53,322 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:22:53,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [157230539] [2023-11-23 21:22:53,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [157230539] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:22:53,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [562040114] [2023-11-23 21:22:53,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:53,329 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:22:53,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:22:53,333 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:22:53,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-23 21:22:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:53,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-23 21:22:53,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:53,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:53,683 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:22:53,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:53,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [562040114] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:22:53,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057581846] [2023-11-23 21:22:53,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:53,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:53,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:53,943 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:22:53,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:22:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:54,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-23 21:22:54,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:54,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:54,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:22:54,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:54,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057581846] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:22:54,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-23 21:22:54,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 5, 5] total 9 [2023-11-23 21:22:54,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932632295] [2023-11-23 21:22:54,603 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-23 21:22:54,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 21:22:54,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:22:54,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 21:22:54,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-23 21:22:54,608 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:54,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:54,794 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-11-23 21:22:54,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:22:54,795 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-23 21:22:54,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:54,796 INFO L225 Difference]: With dead ends: 14 [2023-11-23 21:22:54,796 INFO L226 Difference]: Without dead ends: 12 [2023-11-23 21:22:54,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-11-23 21:22:54,802 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 10 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:54,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 11 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:22:54,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-23 21:22:54,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-11-23 21:22:54,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:54,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-11-23 21:22:54,815 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2023-11-23 21:22:54,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:54,816 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-11-23 21:22:54,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:54,820 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-11-23 21:22:54,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-23 21:22:54,822 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:54,822 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2023-11-23 21:22:54,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:22:55,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:22:55,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-23 21:22:55,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:22:55,426 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:55,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:55,426 INFO L85 PathProgramCache]: Analyzing trace with hash -2112524529, now seen corresponding path program 2 times [2023-11-23 21:22:55,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:22:55,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [218019305] [2023-11-23 21:22:55,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 21:22:55,428 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:22:55,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:22:55,429 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:22:55,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-23 21:22:55,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 21:22:55,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:22:55,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-23 21:22:55,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:55,798 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:55,798 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:22:56,199 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:56,199 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:22:56,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [218019305] [2023-11-23 21:22:56,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [218019305] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:22:56,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1476288834] [2023-11-23 21:22:56,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 21:22:56,200 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:22:56,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:22:56,207 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:22:56,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-11-23 21:22:56,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 21:22:56,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:22:56,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-23 21:22:56,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:56,555 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:56,556 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:22:56,922 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:56,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1476288834] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:22:56,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076463257] [2023-11-23 21:22:56,923 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 21:22:56,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:56,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:56,925 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:22:56,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 21:22:57,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 21:22:57,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:22:57,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-23 21:22:57,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:57,285 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:57,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:22:57,692 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:57,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076463257] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:22:57,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-23 21:22:57,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 11 [2023-11-23 21:22:57,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324887729] [2023-11-23 21:22:57,694 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-23 21:22:57,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 21:22:57,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:22:57,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 21:22:57,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:22:57,697 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:57,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:57,976 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2023-11-23 21:22:57,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:22:57,977 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 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 10 [2023-11-23 21:22:57,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:57,978 INFO L225 Difference]: With dead ends: 11 [2023-11-23 21:22:57,978 INFO L226 Difference]: Without dead ends: 0 [2023-11-23 21:22:57,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 6 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2023-11-23 21:22:57,979 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:58,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 0 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:22:58,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-23 21:22:58,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-23 21:22:58,006 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) [2023-11-23 21:22:58,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-23 21:22:58,006 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2023-11-23 21:22:58,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:58,006 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 21:22:58,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:58,007 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-23 21:22:58,007 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 21:22:58,009 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:22:58,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-23 21:22:58,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-11-23 21:22:58,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 21:22:58,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:58,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-23 21:22:58,697 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-23 21:22:58,697 INFO L899 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2023-11-23 21:22:58,697 INFO L899 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2023-11-23 21:22:58,698 INFO L899 garLoopResultBuilder]: For program point L21-3(line 21) no Hoare annotation was computed. [2023-11-23 21:22:58,698 INFO L895 garLoopResultBuilder]: At program point L52-2(lines 52 93) the Hoare annotation is: (and (= (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_1~0#1|) (exists ((|ULTIMATE.start_main_~var_28_arg_1~0#1| (_ BitVec 8))) (= ((_ extract 7 0) (bvor (_ bv4 32) ((_ zero_extend 24) |ULTIMATE.start_main_~var_28_arg_1~0#1|))) |ULTIMATE.start_main_~state_18~0#1|)) (exists ((|ULTIMATE.start_main_~var_24_arg_0~0#1| (_ BitVec 8)) (|ULTIMATE.start_main_~var_28_arg_1~0#1| (_ BitVec 8))) (= ((_ extract 7 0) (bvor (bvshl ((_ zero_extend 24) |ULTIMATE.start_main_~var_24_arg_0~0#1|) (_ bv2 32)) ((_ zero_extend 24) ((_ extract 7 0) (bvand (_ bv3 32) ((_ zero_extend 24) ((_ extract 7 0) (bvashr ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv4 32) ((_ zero_extend 24) |ULTIMATE.start_main_~var_28_arg_1~0#1|)))) (_ bv1 32))))))))) |ULTIMATE.start_main_~state_5~0#1|)) (= (_ bv7 8) |ULTIMATE.start_main_~mask_SORT_3~0#1|) (= (_ bv2 32) |ULTIMATE.start_main_~var_9~0#1|) (= (_ bv3 8) |ULTIMATE.start_main_~mask_SORT_21~0#1|)) [2023-11-23 21:22:58,699 INFO L899 garLoopResultBuilder]: For program point L52-3(lines 52 93) no Hoare annotation was computed. [2023-11-23 21:22:58,699 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-23 21:22:58,699 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2023-11-23 21:22:58,703 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2023-11-23 21:22:58,705 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:22:58,718 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists ULTIMATE.start_main_~var_28_arg_1~0#1 : bv8 :: ~bvor~32(4bv32, ~zero_extend~32~8(ULTIMATE.start_main_~var_28_arg_1~0#1))[7:0] == ~state_18~0) could not be translated [2023-11-23 21:22:58,719 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists ULTIMATE.start_main_~var_24_arg_0~0#1 : bv8, ULTIMATE.start_main_~var_28_arg_1~0#1 : bv8 :: ~bvor~32(~bvshl~32(~zero_extend~32~8(ULTIMATE.start_main_~var_24_arg_0~0#1), 2bv32), ~zero_extend~32~8(~bvand~32(3bv32, ~zero_extend~32~8(~bvashr~32(~zero_extend~32~8(~bvor~32(4bv32, ~zero_extend~32~8(ULTIMATE.start_main_~var_28_arg_1~0#1))[7:0]), 1bv32)[7:0]))[7:0]))[7:0] == ~state_5~0) could not be translated [2023-11-23 21:22:58,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:22:58 BoogieIcfgContainer [2023-11-23 21:22:58,721 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:22:58,721 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:22:58,722 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:22:58,722 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:22:58,723 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:51" (3/4) ... [2023-11-23 21:22:58,725 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 21:22:58,736 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-11-23 21:22:58,736 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-23 21:22:58,737 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-23 21:22:58,737 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 21:22:58,849 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/witness.graphml [2023-11-23 21:22:58,850 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/witness.yml [2023-11-23 21:22:58,850 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:22:58,851 INFO L158 Benchmark]: Toolchain (without parser) took 8316.08ms. Allocated memory was 88.1MB in the beginning and 186.6MB in the end (delta: 98.6MB). Free memory was 63.7MB in the beginning and 147.8MB in the end (delta: -84.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-23 21:22:58,851 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 88.1MB. Free memory is still 64.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:22:58,852 INFO L158 Benchmark]: CACSL2BoogieTranslator took 417.74ms. Allocated memory is still 88.1MB. Free memory was 63.5MB in the beginning and 51.5MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 21:22:58,852 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.18ms. Allocated memory is still 88.1MB. Free memory was 51.3MB in the beginning and 49.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:22:58,852 INFO L158 Benchmark]: Boogie Preprocessor took 54.55ms. Allocated memory is still 88.1MB. Free memory was 49.6MB in the beginning and 48.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:22:58,853 INFO L158 Benchmark]: RCFGBuilder took 531.37ms. Allocated memory was 88.1MB in the beginning and 127.9MB in the end (delta: 39.8MB). Free memory was 48.2MB in the beginning and 97.2MB in the end (delta: -49.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-23 21:22:58,854 INFO L158 Benchmark]: TraceAbstraction took 7107.88ms. Allocated memory was 127.9MB in the beginning and 186.6MB in the end (delta: 58.7MB). Free memory was 96.6MB in the beginning and 153.1MB in the end (delta: -56.5MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2023-11-23 21:22:58,854 INFO L158 Benchmark]: Witness Printer took 128.61ms. Allocated memory is still 186.6MB. Free memory was 153.1MB in the beginning and 147.8MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-23 21:22:58,859 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 88.1MB. Free memory is still 64.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 417.74ms. Allocated memory is still 88.1MB. Free memory was 63.5MB in the beginning and 51.5MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.18ms. Allocated memory is still 88.1MB. Free memory was 51.3MB in the beginning and 49.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.55ms. Allocated memory is still 88.1MB. Free memory was 49.6MB in the beginning and 48.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 531.37ms. Allocated memory was 88.1MB in the beginning and 127.9MB in the end (delta: 39.8MB). Free memory was 48.2MB in the beginning and 97.2MB in the end (delta: -49.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 7107.88ms. Allocated memory was 127.9MB in the beginning and 186.6MB in the end (delta: 58.7MB). Free memory was 96.6MB in the beginning and 153.1MB in the end (delta: -56.5MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. * Witness Printer took 128.61ms. Allocated memory is still 186.6MB. Free memory was 153.1MB in the beginning and 147.8MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists ULTIMATE.start_main_~var_28_arg_1~0#1 : bv8 :: ~bvor~32(4bv32, ~zero_extend~32~8(ULTIMATE.start_main_~var_28_arg_1~0#1))[7:0] == ~state_18~0) could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists ULTIMATE.start_main_~var_24_arg_0~0#1 : bv8, ULTIMATE.start_main_~var_28_arg_1~0#1 : bv8 :: ~bvor~32(~bvshl~32(~zero_extend~32~8(ULTIMATE.start_main_~var_24_arg_0~0#1), 2bv32), ~zero_extend~32~8(~bvand~32(3bv32, ~zero_extend~32~8(~bvashr~32(~zero_extend~32~8(~bvor~32(4bv32, ~zero_extend~32~8(ULTIMATE.start_main_~var_28_arg_1~0#1))[7:0]), 1bv32)[7:0]))[7:0]))[7:0] == ~state_5~0) could not be translated * 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: 21]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.0s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 56 IncrementalHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 4 mSDtfsCounter, 56 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 63 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=2, InterpolantAutomatonStates: 18, 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 4 NumberOfFragments, 44 HoareAnnotationTreeSize, 1 FomulaSimplifications, 21 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 82 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 93 ConstructedInterpolants, 48 QuantifiedInterpolants, 3393 SizeOfPredicates, 192 NumberOfNonLiveVariables, 589 ConjunctsInSsa, 199 ConjunctsInUnsatCore, 13 InterpolantComputations, 1 PerfectInterpolantSequences, 0/54 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 1 specifications checked. All of them hold - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: ((((1 == mask_SORT_1) && (7 == mask_SORT_3)) && (2 == var_9)) && (3 == mask_SORT_21)) RESULT: Ultimate proved your program to be correct! [2023-11-23 21:22:58,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9cfd0-74c5-40b6-99d0-25092084227c/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE