./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 a0165632 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_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/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_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje --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 0.2.5-dev-a016563 [2024-11-09 07:03:42,863 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:03:42,981 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-09 07:03:42,988 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:03:42,989 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:03:43,036 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:03:43,037 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:03:43,038 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:03:43,039 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:03:43,040 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:03:43,042 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 07:03:43,042 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 07:03:43,043 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 07:03:43,043 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 07:03:43,043 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 07:03:43,044 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 07:03:43,044 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 07:03:43,044 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 07:03:43,045 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 07:03:43,045 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 07:03:43,046 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 07:03:43,050 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 07:03:43,051 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:03:43,055 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 07:03:43,055 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:03:43,056 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:03:43,056 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 07:03:43,056 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:03:43,057 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 07:03:43,057 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:03:43,057 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 07:03:43,066 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:03:43,067 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:03:43,067 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:03:43,067 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:03:43,068 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:03:43,068 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:03:43,069 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:03:43,069 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 07:03:43,069 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 07:03:43,070 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 07:03:43,071 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:03:43,071 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 07:03:43,071 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 07:03:43,072 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_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 860a86adaee5a68a8179b30e590ccdfc140c947e3c27f31baed5d0226260962e [2024-11-09 07:03:43,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:03:43,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:03:43,450 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:03:43,451 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:03:43,452 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:03:43,453 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bit-vector.c Unable to find full path for "g++" [2024-11-09 07:03:45,804 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:03:46,052 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:03:46,053 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bit-vector.c [2024-11-09 07:03:46,064 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/data/51d4a6523/cc9b5d61628f47fd97a1be4a5256000c/FLAG3848c9ca9 [2024-11-09 07:03:46,086 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/data/51d4a6523/cc9b5d61628f47fd97a1be4a5256000c [2024-11-09 07:03:46,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:03:46,091 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:03:46,093 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:03:46,093 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:03:46,100 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:03:46,104 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:03:46" (1/1) ... [2024-11-09 07:03:46,105 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f1567c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:46, skipping insertion in model container [2024-11-09 07:03:46,106 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:03:46" (1/1) ... [2024-11-09 07:03:46,142 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:03:46,355 WARN L250 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_311610eb-f70e-484e-b255-a080f7e49bfb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bit-vector.c[1250,1263] [2024-11-09 07:03:46,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:03:46,425 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:03:46,446 WARN L250 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_311610eb-f70e-484e-b255-a080f7e49bfb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bit-vector.c[1250,1263] [2024-11-09 07:03:46,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:03:46,498 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:03:46,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:46 WrapperNode [2024-11-09 07:03:46,499 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:03:46,501 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:03:46,501 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:03:46,502 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:03:46,511 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:46" (1/1) ... [2024-11-09 07:03:46,527 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:46" (1/1) ... [2024-11-09 07:03:46,591 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 152 [2024-11-09 07:03:46,592 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:03:46,593 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:03:46,593 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:03:46,593 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:03:46,605 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:46" (1/1) ... [2024-11-09 07:03:46,606 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:46" (1/1) ... [2024-11-09 07:03:46,611 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:46" (1/1) ... [2024-11-09 07:03:46,611 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:46" (1/1) ... [2024-11-09 07:03:46,622 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:46" (1/1) ... [2024-11-09 07:03:46,626 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:46" (1/1) ... [2024-11-09 07:03:46,629 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:46" (1/1) ... [2024-11-09 07:03:46,632 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:46" (1/1) ... [2024-11-09 07:03:46,637 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:03:46,638 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:03:46,639 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:03:46,639 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:03:46,640 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:46" (1/1) ... [2024-11-09 07:03:46,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:03:46,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:03:46,695 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 07:03:46,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 07:03:46,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 07:03:46,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 07:03:46,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:03:46,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:03:46,890 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:03:46,893 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:03:47,487 INFO L? ?]: Removed 74 outVars from TransFormulas that were not future-live. [2024-11-09 07:03:47,488 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:03:47,963 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:03:47,964 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 07:03:47,965 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:03:47 BoogieIcfgContainer [2024-11-09 07:03:47,965 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:03:47,969 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:03:47,971 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:03:47,975 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:03:47,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:03:46" (1/3) ... [2024-11-09 07:03:47,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70190f18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:03:47, skipping insertion in model container [2024-11-09 07:03:47,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:46" (2/3) ... [2024-11-09 07:03:47,979 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70190f18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:03:47, skipping insertion in model container [2024-11-09 07:03:47,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:03:47" (3/3) ... [2024-11-09 07:03:47,983 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.bit-vector.c [2024-11-09 07:03:48,010 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:03:48,010 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 07:03:48,099 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:03:48,107 INFO L333 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, 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;@69e8ada7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:03:48,107 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 07:03:48,112 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) [2024-11-09 07:03:48,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 07:03:48,118 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:03:48,119 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 07:03:48,120 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:03:48,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:03:48,129 INFO L85 PathProgramCache]: Analyzing trace with hash 6778509, now seen corresponding path program 1 times [2024-11-09 07:03:48,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:03:48,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303270197] [2024-11-09 07:03:48,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:03:48,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:03:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 07:03:48,433 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 07:03:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 07:03:48,566 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-09 07:03:48,569 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 07:03:48,571 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 07:03:48,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 07:03:48,581 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-09 07:03:48,603 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-09 07:03:48,611 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 07:03:48,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 07:03:48 BoogieIcfgContainer [2024-11-09 07:03:48,617 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 07:03:48,620 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 07:03:48,620 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 07:03:48,620 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 07:03:48,621 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:03:47" (3/4) ... [2024-11-09 07:03:48,624 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-09 07:03:48,627 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 07:03:48,629 INFO L158 Benchmark]: Toolchain (without parser) took 2537.41ms. Allocated memory was 151.0MB in the beginning and 207.6MB in the end (delta: 56.6MB). Free memory was 111.2MB in the beginning and 130.4MB in the end (delta: -19.2MB). Peak memory consumption was 37.4MB. Max. memory is 16.1GB. [2024-11-09 07:03:48,629 INFO L158 Benchmark]: CDTParser took 1.42ms. Allocated memory is still 151.0MB. Free memory is still 119.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 07:03:48,630 INFO L158 Benchmark]: CACSL2BoogieTranslator took 407.48ms. Allocated memory is still 151.0MB. Free memory was 110.8MB in the beginning and 96.9MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 07:03:48,632 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.39ms. Allocated memory is still 151.0MB. Free memory was 96.9MB in the beginning and 92.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 07:03:48,633 INFO L158 Benchmark]: Boogie Preprocessor took 44.43ms. Allocated memory is still 151.0MB. Free memory was 92.7MB in the beginning and 90.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 07:03:48,634 INFO L158 Benchmark]: RCFGBuilder took 1326.79ms. Allocated memory was 151.0MB in the beginning and 207.6MB in the end (delta: 56.6MB). Free memory was 90.5MB in the beginning and 152.5MB in the end (delta: -61.9MB). Peak memory consumption was 43.7MB. Max. memory is 16.1GB. [2024-11-09 07:03:48,635 INFO L158 Benchmark]: TraceAbstraction took 648.98ms. Allocated memory is still 207.6MB. Free memory was 151.4MB in the beginning and 131.5MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-09 07:03:48,635 INFO L158 Benchmark]: Witness Printer took 7.26ms. Allocated memory is still 207.6MB. Free memory was 131.5MB in the beginning and 130.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 07:03:48,639 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.42ms. Allocated memory is still 151.0MB. Free memory is still 119.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 407.48ms. Allocated memory is still 151.0MB. Free memory was 110.8MB in the beginning and 96.9MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 91.39ms. Allocated memory is still 151.0MB. Free memory was 96.9MB in the beginning and 92.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.43ms. Allocated memory is still 151.0MB. Free memory was 92.7MB in the beginning and 90.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1326.79ms. Allocated memory was 151.0MB in the beginning and 207.6MB in the end (delta: 56.6MB). Free memory was 90.5MB in the beginning and 152.5MB in the end (delta: -61.9MB). Peak memory consumption was 43.7MB. Max. memory is 16.1GB. * TraceAbstraction took 648.98ms. Allocated memory is still 207.6MB. Free memory was 151.4MB in the beginning and 131.5MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 7.26ms. Allocated memory is still 207.6MB. Free memory was 131.5MB in the beginning and 130.4MB in the end (delta: 1.0MB). 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 [mask_SORT_1=1, mask_SORT_21=3, mask_SORT_3=7, state_18=6, state_5=2, var_13=1, 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) [L21] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, 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 [2024-11-09 07:03:48,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/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_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/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_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje --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 0.2.5-dev-a016563 [2024-11-09 07:03:51,226 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:03:51,367 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2024-11-09 07:03:51,381 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:03:51,382 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:03:51,437 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:03:51,438 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:03:51,438 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:03:51,440 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:03:51,443 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:03:51,444 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 07:03:51,445 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 07:03:51,445 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 07:03:51,446 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 07:03:51,446 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 07:03:51,447 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 07:03:51,451 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:03:51,452 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 07:03:51,452 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:03:51,453 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 07:03:51,453 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:03:51,456 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 07:03:51,457 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 07:03:51,458 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-09 07:03:51,458 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:03:51,458 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-09 07:03:51,459 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 07:03:51,459 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:03:51,460 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:03:51,460 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 07:03:51,461 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:03:51,461 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:03:51,461 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:03:51,462 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:03:51,462 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:03:51,463 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 07:03:51,463 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-09 07:03:51,463 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-09 07:03:51,464 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:03:51,465 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 07:03:51,467 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 860a86adaee5a68a8179b30e590ccdfc140c947e3c27f31baed5d0226260962e [2024-11-09 07:03:51,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:03:52,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:03:52,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:03:52,032 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:03:52,033 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:03:52,035 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bit-vector.c Unable to find full path for "g++" [2024-11-09 07:03:54,569 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:03:54,932 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:03:54,933 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bit-vector.c [2024-11-09 07:03:54,943 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/data/7c2b75413/578e4f2d5e834307a098f74275963863/FLAGcd0b38636 [2024-11-09 07:03:55,169 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/data/7c2b75413/578e4f2d5e834307a098f74275963863 [2024-11-09 07:03:55,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:03:55,174 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:03:55,176 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:03:55,176 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:03:55,182 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:03:55,183 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:03:55" (1/1) ... [2024-11-09 07:03:55,184 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37bb1c8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:55, skipping insertion in model container [2024-11-09 07:03:55,185 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:03:55" (1/1) ... [2024-11-09 07:03:55,217 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:03:55,542 WARN L250 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_311610eb-f70e-484e-b255-a080f7e49bfb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bit-vector.c[1250,1263] [2024-11-09 07:03:55,613 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:03:55,636 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:03:55,654 WARN L250 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_311610eb-f70e-484e-b255-a080f7e49bfb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bit-vector.c[1250,1263] [2024-11-09 07:03:55,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:03:55,704 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:03:55,705 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:55 WrapperNode [2024-11-09 07:03:55,705 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:03:55,707 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:03:55,707 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:03:55,708 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:03:55,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:55" (1/1) ... [2024-11-09 07:03:55,726 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:55" (1/1) ... [2024-11-09 07:03:55,759 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 80 [2024-11-09 07:03:55,762 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:03:55,763 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:03:55,763 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:03:55,763 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:03:55,775 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:55" (1/1) ... [2024-11-09 07:03:55,775 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:55" (1/1) ... [2024-11-09 07:03:55,782 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:55" (1/1) ... [2024-11-09 07:03:55,785 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:55" (1/1) ... [2024-11-09 07:03:55,795 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:55" (1/1) ... [2024-11-09 07:03:55,800 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:55" (1/1) ... [2024-11-09 07:03:55,806 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:55" (1/1) ... [2024-11-09 07:03:55,807 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:55" (1/1) ... [2024-11-09 07:03:55,814 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:03:55,815 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:03:55,819 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:03:55,819 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:03:55,820 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:55" (1/1) ... [2024-11-09 07:03:55,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:03:55,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:03:55,867 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 07:03:55,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 07:03:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 07:03:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-09 07:03:55,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:03:55,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:03:56,045 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:03:56,048 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:03:56,321 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live. [2024-11-09 07:03:56,321 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:03:56,338 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:03:56,338 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 07:03:56,339 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:03:56 BoogieIcfgContainer [2024-11-09 07:03:56,339 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:03:56,341 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:03:56,342 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:03:56,345 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:03:56,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:03:55" (1/3) ... [2024-11-09 07:03:56,347 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae4e1e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:03:56, skipping insertion in model container [2024-11-09 07:03:56,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:55" (2/3) ... [2024-11-09 07:03:56,349 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae4e1e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:03:56, skipping insertion in model container [2024-11-09 07:03:56,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:03:56" (3/3) ... [2024-11-09 07:03:56,353 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.bit-vector.c [2024-11-09 07:03:56,380 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:03:56,380 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 07:03:56,461 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:03:56,471 INFO L333 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, 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;@72a25b7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:03:56,472 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 07:03:56,477 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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) [2024-11-09 07:03:56,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-09 07:03:56,485 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:03:56,487 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 07:03:56,487 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:03:56,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:03:56,497 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2024-11-09 07:03:56,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:03:56,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808849574] [2024-11-09 07:03:56,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:03:56,514 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 [2024-11-09 07:03:56,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:03:56,519 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:03:56,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:03:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:03:56,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 07:03:56,664 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:03:57,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:03:57,060 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:03:57,061 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:03:57,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808849574] [2024-11-09 07:03:57,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808849574] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:03:57,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:03:57,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:03:57,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132092280] [2024-11-09 07:03:57,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:03:57,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:03:57,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:03:57,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:03:57,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:03:57,110 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:03:57,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:03:57,191 INFO L93 Difference]: Finished difference Result 19 states and 27 transitions. [2024-11-09 07:03:57,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:03:57,195 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-09 07:03:57,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:03:57,204 INFO L225 Difference]: With dead ends: 19 [2024-11-09 07:03:57,205 INFO L226 Difference]: Without dead ends: 10 [2024-11-09 07:03:57,207 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:03:57,214 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:03:57,217 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 11 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:03:57,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-11-09 07:03:57,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2024-11-09 07:03:57,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2024-11-09 07:03:57,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2024-11-09 07:03:57,252 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2024-11-09 07:03:57,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:03:57,253 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2024-11-09 07:03:57,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:03:57,253 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2024-11-09 07:03:57,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 07:03:57,254 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:03:57,254 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-09 07:03:57,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:03:57,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:03:57,455 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:03:57,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:03:57,456 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2024-11-09 07:03:57,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:03:57,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062663067] [2024-11-09 07:03:57,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:03:57,457 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 [2024-11-09 07:03:57,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:03:57,459 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:03:57,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:03:57,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:03:57,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 07:03:57,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:03:57,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:03:57,887 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:03:58,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:03:58,279 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:03:58,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062663067] [2024-11-09 07:03:58,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062663067] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:03:58,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1487103584] [2024-11-09 07:03:58,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:03:58,281 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:03:58,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:03:58,285 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:03:58,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-09 07:03:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:03:58,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 07:03:58,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:03:58,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:03:58,601 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:03:58,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:03:58,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1487103584] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:03:58,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15386685] [2024-11-09 07:03:58,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:03:58,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:03:58,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:03:58,829 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:03:58,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 07:03:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:03:58,954 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 07:03:58,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:03:59,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:03:59,226 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:03:59,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:03:59,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15386685] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:03:59,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 07:03:59,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 10 [2024-11-09 07:03:59,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395272560] [2024-11-09 07:03:59,533 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 07:03:59,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 07:03:59,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:03:59,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 07:03:59,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-09 07:03:59,540 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:03:59,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:03:59,998 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2024-11-09 07:03:59,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 07:04:00,000 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-09 07:04:00,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:04:00,001 INFO L225 Difference]: With dead ends: 18 [2024-11-09 07:04:00,002 INFO L226 Difference]: Without dead ends: 16 [2024-11-09 07:04:00,003 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-09 07:04:00,007 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:04:00,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 22 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:04:00,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-09 07:04:00,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2024-11-09 07:04:00,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 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) [2024-11-09 07:04:00,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2024-11-09 07:04:00,022 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2024-11-09 07:04:00,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:04:00,023 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2024-11-09 07:04:00,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:04:00,026 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2024-11-09 07:04:00,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 07:04:00,026 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:04:00,027 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2024-11-09 07:04:00,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-11-09 07:04:00,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 07:04:00,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:04:00,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:04:00,628 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:04:00,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:04:00,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 2 times [2024-11-09 07:04:00,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:04:00,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [490837986] [2024-11-09 07:04:00,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 07:04:00,630 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 [2024-11-09 07:04:00,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:04:00,636 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:04:00,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:04:00,752 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 07:04:00,753 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:04:00,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 07:04:00,761 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:04:01,120 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:04:01,120 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:04:01,716 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:04:01,717 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:04:01,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [490837986] [2024-11-09 07:04:01,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [490837986] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:04:01,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1020208303] [2024-11-09 07:04:01,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 07:04:01,718 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:04:01,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:04:01,721 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:04:01,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-11-09 07:04:01,901 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 07:04:01,902 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:04:01,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 07:04:01,908 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:04:02,165 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:04:02,165 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:04:02,499 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:04:02,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1020208303] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:04:02,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780461421] [2024-11-09 07:04:02,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 07:04:02,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:04:02,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:04:02,502 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:04:02,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 07:04:02,614 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 07:04:02,614 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:04:02,621 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 07:04:02,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:04:02,841 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:04:02,841 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:04:03,166 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:04:03,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780461421] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:04:03,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 07:04:03,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 12 [2024-11-09 07:04:03,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94229990] [2024-11-09 07:04:03,168 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 07:04:03,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 07:04:03,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:04:03,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 07:04:03,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-09 07:04:03,171 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 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) [2024-11-09 07:04:04,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:04:04,932 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2024-11-09 07:04:04,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 07:04:04,933 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 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 14 [2024-11-09 07:04:04,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:04:04,934 INFO L225 Difference]: With dead ends: 33 [2024-11-09 07:04:04,934 INFO L226 Difference]: Without dead ends: 31 [2024-11-09 07:04:04,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2024-11-09 07:04:04,937 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 16 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:04:04,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 23 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:04:04,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-09 07:04:04,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2024-11-09 07:04:04,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 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) [2024-11-09 07:04:04,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2024-11-09 07:04:04,955 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 14 [2024-11-09 07:04:04,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:04:04,956 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2024-11-09 07:04:04,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 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) [2024-11-09 07:04:04,956 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2024-11-09 07:04:04,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 07:04:04,958 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:04:04,958 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 1, 1, 1, 1] [2024-11-09 07:04:04,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:04:05,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2024-11-09 07:04:05,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 07:04:05,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/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_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:04:05,560 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:04:05,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:04:05,561 INFO L85 PathProgramCache]: Analyzing trace with hash 637038473, now seen corresponding path program 3 times [2024-11-09 07:04:05,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:04:05,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279191335] [2024-11-09 07:04:05,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:04:05,562 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 [2024-11-09 07:04:05,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:04:05,563 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:04:05,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/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 (9)] Waiting until timeout for monitored process [2024-11-09 07:04:05,692 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 07:04:05,693 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:04:05,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-09 07:04:05,704 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:04:06,488 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-09 07:04:06,488 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:04:09,317 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-09 07:04:09,318 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:04:09,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279191335] [2024-11-09 07:04:09,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [279191335] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:04:09,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1699901048] [2024-11-09 07:04:09,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:04:09,319 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:04:09,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:04:09,322 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:04:09,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-11-09 07:04:09,599 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 07:04:09,600 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:04:09,603 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-09 07:04:09,614 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:04:10,286 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-09 07:04:10,287 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:04:12,601 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-09 07:04:12,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1699901048] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:04:12,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574135026] [2024-11-09 07:04:12,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:04:12,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:04:12,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:04:12,608 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:04:12,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 07:04:12,772 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 07:04:12,773 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:04:12,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-09 07:04:12,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:04:13,555 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-09 07:04:13,555 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:04:15,949 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 5 proven. 49 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-09 07:04:15,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574135026] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:04:15,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 07:04:15,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 9, 9] total 16 [2024-11-09 07:04:15,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808589266] [2024-11-09 07:04:15,951 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 07:04:15,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 07:04:15,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:04:15,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 07:04:15,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2024-11-09 07:04:15,954 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 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) [2024-11-09 07:04:16,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:04:16,232 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2024-11-09 07:04:16,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:04:16,233 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 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 29 [2024-11-09 07:04:16,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:04:16,234 INFO L225 Difference]: With dead ends: 30 [2024-11-09 07:04:16,234 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 07:04:16,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 150 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2024-11-09 07:04:16,237 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 4 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:04:16,241 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 12 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:04:16,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 07:04:16,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 07:04:16,242 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) [2024-11-09 07:04:16,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 07:04:16,243 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2024-11-09 07:04:16,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:04:16,243 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 07:04:16,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 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) [2024-11-09 07:04:16,244 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 07:04:16,244 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 07:04:16,249 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 07:04:16,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2024-11-09 07:04:16,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/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 (9)] Forceful destruction successful, exit code 0 [2024-11-09 07:04:16,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 07:04:16,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:04:16,856 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1] [2024-11-09 07:04:16,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 07:04:17,195 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 07:04:17,215 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: BitVectorAccessExpression [2024-11-09 07:04:17,216 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-09 07:04:17,216 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-09 07:04:17,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 07:04:17 BoogieIcfgContainer [2024-11-09 07:04:17,224 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 07:04:17,225 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 07:04:17,225 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 07:04:17,225 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 07:04:17,226 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:03:56" (3/4) ... [2024-11-09 07:04:17,230 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 07:04:17,239 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-11-09 07:04:17,240 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-09 07:04:17,241 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-09 07:04:17,241 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 07:04:17,285 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.witnessprinter has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromIASTNode(CACSLBacktranslationValueProvider.java:80) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromStep(CACSLBacktranslationValueProvider.java:61) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromStep(CACSLBacktranslationValueProvider.java:1) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.GeneratedWitnessEdge.getSourceCode(GeneratedWitnessEdge.java:156) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.GraphMLCorrectnessWitnessGenerator.lambda$2(GraphMLCorrectnessWitnessGenerator.java:91) at edu.uci.ics.jung.io.GraphMLWriter.writeEdgeData(GraphMLWriter.java:237) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.UltimateGraphMLWriter.save(UltimateGraphMLWriter.java:106) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.GraphMLCorrectnessWitnessGenerator.makeGraphMLString(GraphMLCorrectnessWitnessGenerator.java:111) at de.uni_freiburg.informatik.ultimate.witnessprinter.WitnessPrinter.generateProofWitness(WitnessPrinter.java:168) at de.uni_freiburg.informatik.ultimate.witnessprinter.WitnessPrinter.finish(WitnessPrinter.java:143) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:130) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 07:04:17,289 INFO L158 Benchmark]: Toolchain (without parser) took 22115.44ms. Allocated memory was 107.0MB in the beginning and 281.0MB in the end (delta: 174.1MB). Free memory was 82.2MB in the beginning and 230.2MB in the end (delta: -148.0MB). Peak memory consumption was 28.0MB. Max. memory is 16.1GB. [2024-11-09 07:04:17,290 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 71.3MB. Free memory was 47.3MB in the beginning and 47.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 07:04:17,290 INFO L158 Benchmark]: CACSL2BoogieTranslator took 529.83ms. Allocated memory is still 107.0MB. Free memory was 82.2MB in the beginning and 67.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-09 07:04:17,291 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.52ms. Allocated memory is still 107.0MB. Free memory was 67.5MB in the beginning and 65.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 07:04:17,291 INFO L158 Benchmark]: Boogie Preprocessor took 51.32ms. Allocated memory is still 107.0MB. Free memory was 65.7MB in the beginning and 64.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 07:04:17,291 INFO L158 Benchmark]: RCFGBuilder took 524.26ms. Allocated memory is still 107.0MB. Free memory was 64.4MB in the beginning and 80.6MB in the end (delta: -16.1MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. [2024-11-09 07:04:17,292 INFO L158 Benchmark]: TraceAbstraction took 20882.55ms. Allocated memory was 107.0MB in the beginning and 281.0MB in the end (delta: 174.1MB). Free memory was 79.8MB in the beginning and 233.4MB in the end (delta: -153.6MB). Peak memory consumption was 164.3MB. Max. memory is 16.1GB. [2024-11-09 07:04:17,292 INFO L158 Benchmark]: Witness Printer took 64.15ms. Allocated memory is still 281.0MB. Free memory was 233.4MB in the beginning and 230.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 07:04:17,294 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 71.3MB. Free memory was 47.3MB in the beginning and 47.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 529.83ms. Allocated memory is still 107.0MB. Free memory was 82.2MB in the beginning and 67.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.52ms. Allocated memory is still 107.0MB. Free memory was 67.5MB in the beginning and 65.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.32ms. Allocated memory is still 107.0MB. Free memory was 65.7MB in the beginning and 64.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 524.26ms. Allocated memory is still 107.0MB. Free memory was 64.4MB in the beginning and 80.6MB in the end (delta: -16.1MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. * TraceAbstraction took 20882.55ms. Allocated memory was 107.0MB in the beginning and 281.0MB in the end (delta: 174.1MB). Free memory was 79.8MB in the beginning and 233.4MB in the end (delta: -153.6MB). Peak memory consumption was 164.3MB. Max. memory is 16.1GB. * Witness Printer took 64.15ms. Allocated memory is still 281.0MB. Free memory was 233.4MB in the beginning and 230.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: BitVectorAccessExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * 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, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 20.4s, OverallIterations: 4, TraceHistogramMax: 9, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 28 mSDsluCounter, 68 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 54 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 146 IncrementalHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 14 mSDtfsCounter, 146 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 317 GetRequests, 250 SyntacticMatches, 8 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=3, InterpolantAutomatonStates: 36, 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, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 14.0s InterpolantComputationTime, 158 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 292 ConstructedInterpolants, 129 QuantifiedInterpolants, 32311 SizeOfPredicates, 56 NumberOfNonLiveVariables, 766 ConjunctsInSsa, 260 ConjunctsInUnsatCore, 19 InterpolantComputations, 1 PerfectInterpolantSequences, 301/702 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: ((((((((2 == var_9) && (7 == mask_SORT_3)) && (2 == state_5)) && (1 == var_13)) && (3 == mask_SORT_21)) && (6 == state_18)) && (1 == mask_SORT_1)) || (((((2 == var_9) && (7 == mask_SORT_3)) && (1 == var_13)) && (3 == mask_SORT_21)) && (1 == mask_SORT_1))) * Results from de.uni_freiburg.informatik.ultimate.witnessprinter: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.witnessprinter: NullPointerException: null: de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromIASTNode(CACSLBacktranslationValueProvider.java:80) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2024-11-09 07:04:17,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311610eb-f70e-484e-b255-a080f7e49bfb/bin/utaipan-verify-YMUCfTKeje/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: ERROR: ExceptionOrErrorResult: NullPointerException: null