./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 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/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_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91 --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 0.2.4-dev-0e0057c [2023-11-25 00:06:18,991 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:06:19,109 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-25 00:06:19,118 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:06:19,119 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:06:19,160 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:06:19,161 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:06:19,162 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:06:19,163 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:06:19,165 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:06:19,165 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:06:19,166 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:06:19,166 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:06:19,167 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:06:19,167 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:06:19,168 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:06:19,168 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:06:19,168 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:06:19,169 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:06:19,169 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:06:19,170 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:06:19,170 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:06:19,172 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:06:19,172 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:06:19,173 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:06:19,173 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:06:19,173 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:06:19,174 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:06:19,174 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:06:19,175 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:06:19,176 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:06:19,176 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:06:19,177 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:06:19,177 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:06:19,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:06:19,178 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:06:19,178 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:06:19,179 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:06:19,179 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:06:19,179 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:06:19,180 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:06:19,180 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:06:19,180 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:06:19,181 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:06:19,181 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_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 860a86adaee5a68a8179b30e590ccdfc140c947e3c27f31baed5d0226260962e [2023-11-25 00:06:19,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:06:19,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:06:19,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:06:19,484 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:06:19,485 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:06:19,487 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bit-vector.c [2023-11-25 00:06:22,745 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:06:22,947 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:06:22,948 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bit-vector.c [2023-11-25 00:06:22,957 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/data/7febd9cdd/caea5050f1d74eb8b1542f4e8f6254a4/FLAG24852e72c [2023-11-25 00:06:22,974 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/data/7febd9cdd/caea5050f1d74eb8b1542f4e8f6254a4 [2023-11-25 00:06:22,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:06:22,978 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:06:22,980 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:06:22,980 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:06:22,986 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:06:22,987 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:06:22" (1/1) ... [2023-11-25 00:06:22,988 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bdae0df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:22, skipping insertion in model container [2023-11-25 00:06:22,988 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:06:22" (1/1) ... [2023-11-25 00:06:23,013 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:06:23,169 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bit-vector.c[1250,1263] [2023-11-25 00:06:23,211 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:06:23,222 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:06:23,234 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bit-vector.c[1250,1263] [2023-11-25 00:06:23,258 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:06:23,274 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:06:23,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:23 WrapperNode [2023-11-25 00:06:23,275 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:06:23,276 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:06:23,276 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:06:23,276 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:06:23,284 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:23" (1/1) ... [2023-11-25 00:06:23,293 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:23" (1/1) ... [2023-11-25 00:06:23,350 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 171 [2023-11-25 00:06:23,350 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:06:23,351 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:06:23,351 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:06:23,352 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:06:23,398 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:23" (1/1) ... [2023-11-25 00:06:23,398 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:23" (1/1) ... [2023-11-25 00:06:23,404 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:23" (1/1) ... [2023-11-25 00:06:23,404 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:23" (1/1) ... [2023-11-25 00:06:23,416 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:23" (1/1) ... [2023-11-25 00:06:23,420 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:23" (1/1) ... [2023-11-25 00:06:23,425 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:23" (1/1) ... [2023-11-25 00:06:23,428 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:23" (1/1) ... [2023-11-25 00:06:23,435 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:06:23,436 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:06:23,437 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:06:23,437 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:06:23,438 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:23" (1/1) ... [2023-11-25 00:06:23,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:06:23,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:06:23,500 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:06:23,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:06:23,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:06:23,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:06:23,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:06:23,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:06:23,679 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:06:23,682 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:06:24,130 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:06:24,398 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:06:24,398 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-25 00:06:24,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:06:24 BoogieIcfgContainer [2023-11-25 00:06:24,401 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:06:24,403 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:06:24,403 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:06:24,408 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:06:24,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:06:22" (1/3) ... [2023-11-25 00:06:24,409 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@240749c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:06:24, skipping insertion in model container [2023-11-25 00:06:24,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:23" (2/3) ... [2023-11-25 00:06:24,411 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@240749c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:06:24, skipping insertion in model container [2023-11-25 00:06:24,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:06:24" (3/3) ... [2023-11-25 00:06:24,413 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.bit-vector.c [2023-11-25 00:06:24,435 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:06:24,435 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-25 00:06:24,480 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:06:24,487 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@e961242, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:06:24,488 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-25 00:06:24,492 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:24,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-25 00:06:24,498 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:06:24,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-25 00:06:24,499 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:06:24,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:06:24,508 INFO L85 PathProgramCache]: Analyzing trace with hash 6255565, now seen corresponding path program 1 times [2023-11-25 00:06:24,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:06:24,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605618986] [2023-11-25 00:06:24,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:24,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:06:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-25 00:06:24,868 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-25 00:06:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-25 00:06:24,980 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-25 00:06:24,982 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-25 00:06:24,983 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-25 00:06:25,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-25 00:06:25,013 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-25 00:06:25,017 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-25 00:06:25,038 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-25 00:06:25,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 12:06:25 BoogieIcfgContainer [2023-11-25 00:06:25,050 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-25 00:06:25,052 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-25 00:06:25,052 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-25 00:06:25,053 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-25 00:06:25,053 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:06:24" (3/4) ... [2023-11-25 00:06:25,055 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-25 00:06:25,057 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-25 00:06:25,058 INFO L158 Benchmark]: Toolchain (without parser) took 2079.53ms. Allocated memory was 123.7MB in the beginning and 157.3MB in the end (delta: 33.6MB). Free memory was 77.7MB in the beginning and 121.9MB in the end (delta: -44.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:06:25,059 INFO L158 Benchmark]: CDTParser took 1.28ms. Allocated memory is still 123.7MB. Free memory is still 70.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:06:25,059 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.19ms. Allocated memory is still 123.7MB. Free memory was 77.4MB in the beginning and 65.3MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-25 00:06:25,061 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.82ms. Allocated memory is still 123.7MB. Free memory was 65.3MB in the beginning and 60.9MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-25 00:06:25,066 INFO L158 Benchmark]: Boogie Preprocessor took 84.44ms. Allocated memory was 123.7MB in the beginning and 157.3MB in the end (delta: 33.6MB). Free memory was 60.9MB in the beginning and 125.2MB in the end (delta: -64.3MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2023-11-25 00:06:25,067 INFO L158 Benchmark]: RCFGBuilder took 964.56ms. Allocated memory is still 157.3MB. Free memory was 125.1MB in the beginning and 74.2MB in the end (delta: 50.9MB). Peak memory consumption was 54.9MB. Max. memory is 16.1GB. [2023-11-25 00:06:25,068 INFO L158 Benchmark]: TraceAbstraction took 647.03ms. Allocated memory is still 157.3MB. Free memory was 73.2MB in the beginning and 121.9MB in the end (delta: -48.7MB). Peak memory consumption was 25.7MB. Max. memory is 16.1GB. [2023-11-25 00:06:25,069 INFO L158 Benchmark]: Witness Printer took 4.70ms. Allocated memory is still 157.3MB. Free memory was 121.9MB in the beginning and 121.9MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-25 00:06:25,078 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.28ms. Allocated memory is still 123.7MB. Free memory is still 70.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 295.19ms. Allocated memory is still 123.7MB. Free memory was 77.4MB in the beginning and 65.3MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.82ms. Allocated memory is still 123.7MB. Free memory was 65.3MB in the beginning and 60.9MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 84.44ms. Allocated memory was 123.7MB in the beginning and 157.3MB in the end (delta: 33.6MB). Free memory was 60.9MB in the beginning and 125.2MB in the end (delta: -64.3MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * RCFGBuilder took 964.56ms. Allocated memory is still 157.3MB. Free memory was 125.1MB in the beginning and 74.2MB in the end (delta: 50.9MB). Peak memory consumption was 54.9MB. Max. memory is 16.1GB. * TraceAbstraction took 647.03ms. Allocated memory is still 157.3MB. Free memory was 73.2MB in the beginning and 121.9MB in the end (delta: -48.7MB). Peak memory consumption was 25.7MB. Max. memory is 16.1GB. * Witness Printer took 4.70ms. Allocated memory is still 157.3MB. Free memory was 121.9MB in the beginning and 121.9MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 58. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 3); [L30] const SORT_3 msb_SORT_3 = (SORT_3)1 << (3 - 1); [L32] const SORT_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 32); [L33] const SORT_7 msb_SORT_7 = (SORT_7)1 << (32 - 1); [L35] const SORT_21 mask_SORT_21 = (SORT_21)-1 >> (sizeof(SORT_21) * 8 - 2); [L36] const SORT_21 msb_SORT_21 = (SORT_21)1 << (2 - 1); [L38] const SORT_3 var_4 = 2; [L39] const SORT_7 var_9 = 2; [L40] const SORT_1 var_13 = 1; [L41] const SORT_3 var_17 = 6; [L43] SORT_1 input_2; [L45] EXPR __VERIFIER_nondet_uchar() & mask_SORT_3 [L45] SORT_3 state_5 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L46] EXPR __VERIFIER_nondet_uchar() & mask_SORT_3 [L46] SORT_3 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L48] SORT_3 init_6_arg_1 = var_4; [L49] state_5 = init_6_arg_1 [L50] SORT_3 init_19_arg_1 = var_17; [L51] state_18 = init_19_arg_1 VAL [init_19_arg_1=6, init_6_arg_1=2, mask_SORT_1=1, mask_SORT_21=3, mask_SORT_3=7, mask_SORT_7=4294967295, msb_SORT_1=1, msb_SORT_21=2, msb_SORT_3=4, msb_SORT_7=2147483648, state_18=6, state_5=2, var_13=1, var_17=6, var_4=2, var_9=2] [L54] input_2 = __VERIFIER_nondet_uchar() [L57] SORT_3 var_8_arg_0 = state_5; [L58] EXPR var_8_arg_0 & mask_SORT_3 [L58] var_8_arg_0 = var_8_arg_0 & mask_SORT_3 [L59] SORT_7 var_8 = var_8_arg_0; [L60] SORT_7 var_10_arg_0 = var_8; [L61] SORT_7 var_10_arg_1 = var_9; [L62] SORT_1 var_10 = var_10_arg_0 >= var_10_arg_1; [L63] SORT_1 var_14_arg_0 = var_10; [L64] SORT_1 var_14 = ~var_14_arg_0; [L65] SORT_1 var_15_arg_0 = var_13; [L66] SORT_1 var_15_arg_1 = var_14; [L67] EXPR var_15_arg_0 & var_15_arg_1 [L67] SORT_1 var_15 = var_15_arg_0 & var_15_arg_1; [L68] EXPR var_15 & mask_SORT_1 [L68] var_15 = var_15 & mask_SORT_1 [L69] SORT_1 bad_16_arg_0 = var_15; [L70] CALL __VERIFIER_assert(!(bad_16_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, 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 [2023-11-25 00:06:25,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/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_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91 --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 0.2.4-dev-0e0057c [2023-11-25 00:06:27,684 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:06:27,770 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2023-11-25 00:06:27,776 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:06:27,776 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:06:27,804 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:06:27,804 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:06:27,805 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:06:27,806 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:06:27,807 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:06:27,807 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:06:27,808 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:06:27,808 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:06:27,809 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:06:27,810 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:06:27,810 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:06:27,811 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:06:27,812 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:06:27,812 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:06:27,813 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:06:27,813 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:06:27,814 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:06:27,815 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-25 00:06:27,815 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-25 00:06:27,816 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-25 00:06:27,816 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:06:27,816 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:06:27,817 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:06:27,817 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-25 00:06:27,818 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:06:27,818 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:06:27,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:06:27,819 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:06:27,819 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:06:27,820 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:06:27,820 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-25 00:06:27,820 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-25 00:06:27,821 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:06:27,821 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:06:27,821 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:06:27,822 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:06:27,822 INFO L153 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 860a86adaee5a68a8179b30e590ccdfc140c947e3c27f31baed5d0226260962e [2023-11-25 00:06:28,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:06:28,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:06:28,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:06:28,278 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:06:28,279 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:06:28,281 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bit-vector.c [2023-11-25 00:06:31,570 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:06:31,846 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:06:31,846 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bit-vector.c [2023-11-25 00:06:31,855 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/data/e5d59507e/4e8c684c631741efa2792c988b2f1cbb/FLAG51d91623c [2023-11-25 00:06:31,871 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/data/e5d59507e/4e8c684c631741efa2792c988b2f1cbb [2023-11-25 00:06:31,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:06:31,876 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:06:31,878 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:06:31,878 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:06:31,885 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:06:31,888 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:06:31" (1/1) ... [2023-11-25 00:06:31,890 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@405fb5c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:31, skipping insertion in model container [2023-11-25 00:06:31,890 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:06:31" (1/1) ... [2023-11-25 00:06:31,923 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:06:32,117 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bit-vector.c[1250,1263] [2023-11-25 00:06:32,178 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:06:32,198 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:06:32,218 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bit-vector.c[1250,1263] [2023-11-25 00:06:32,242 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:06:32,258 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:06:32,258 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:32 WrapperNode [2023-11-25 00:06:32,259 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:06:32,260 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:06:32,260 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:06:32,261 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:06:32,269 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:32" (1/1) ... [2023-11-25 00:06:32,279 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:32" (1/1) ... [2023-11-25 00:06:32,303 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2023-11-25 00:06:32,303 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:06:32,304 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:06:32,304 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:06:32,304 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:06:32,312 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:32" (1/1) ... [2023-11-25 00:06:32,313 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:32" (1/1) ... [2023-11-25 00:06:32,317 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:32" (1/1) ... [2023-11-25 00:06:32,317 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:32" (1/1) ... [2023-11-25 00:06:32,323 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:32" (1/1) ... [2023-11-25 00:06:32,327 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:32" (1/1) ... [2023-11-25 00:06:32,328 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:32" (1/1) ... [2023-11-25 00:06:32,330 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:32" (1/1) ... [2023-11-25 00:06:32,333 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:06:32,334 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:06:32,335 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:06:32,335 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:06:32,336 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:32" (1/1) ... [2023-11-25 00:06:32,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:06:32,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:06:32,371 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:06:32,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:06:32,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:06:32,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-25 00:06:32,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:06:32,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:06:32,543 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:06:32,545 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:06:32,763 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:06:32,810 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:06:32,810 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-25 00:06:32,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:06:32 BoogieIcfgContainer [2023-11-25 00:06:32,811 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:06:32,814 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:06:32,814 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:06:32,817 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:06:32,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:06:31" (1/3) ... [2023-11-25 00:06:32,819 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e25815c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:06:32, skipping insertion in model container [2023-11-25 00:06:32,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:32" (2/3) ... [2023-11-25 00:06:32,819 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e25815c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:06:32, skipping insertion in model container [2023-11-25 00:06:32,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:06:32" (3/3) ... [2023-11-25 00:06:32,821 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.bit-vector.c [2023-11-25 00:06:32,842 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:06:32,842 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-25 00:06:32,891 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:06:32,898 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@48f16a0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:06:32,899 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-25 00:06:32,903 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:32,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-25 00:06:32,910 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:06:32,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-25 00:06:32,911 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:06:32,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:06:32,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-11-25 00:06:32,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:06:32,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [851090791] [2023-11-25 00:06:32,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:32,932 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:06:32,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:06:32,936 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-25 00:06:32,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-25 00:06:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:33,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-25 00:06:33,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:06:33,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:33,480 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:06:33,481 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:06:33,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [851090791] [2023-11-25 00:06:33,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [851090791] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:06:33,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:06:33,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:06:33,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851322588] [2023-11-25 00:06:33,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:06:33,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:06:33,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:06:33,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:06:33,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:06:33,534 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:33,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:06:33,606 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2023-11-25 00:06:33,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:06:33,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-25 00:06:33,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:06:33,623 INFO L225 Difference]: With dead ends: 16 [2023-11-25 00:06:33,623 INFO L226 Difference]: Without dead ends: 9 [2023-11-25 00:06:33,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:06:33,631 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-25 00:06:33,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-25 00:06:33,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-25 00:06:33,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-11-25 00:06:33,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:33,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-11-25 00:06:33,706 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-11-25 00:06:33,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:06:33,707 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-11-25 00:06:33,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:33,708 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-11-25 00:06:33,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-25 00:06:33,708 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:06:33,708 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-25 00:06:33,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/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)] Forceful destruction successful, exit code 0 [2023-11-25 00:06:33,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:06:33,911 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:06:33,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:06:33,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-11-25 00:06:33,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:06:33,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1005086017] [2023-11-25 00:06:33,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:33,913 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:06:33,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:06:33,915 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-25 00:06:33,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-25 00:06:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:34,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-25 00:06:34,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:06:34,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:34,311 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:06:34,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:34,578 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:06:34,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1005086017] [2023-11-25 00:06:34,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1005086017] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:06:34,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [814682500] [2023-11-25 00:06:34,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:34,580 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-25 00:06:34,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-25 00:06:34,622 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-25 00:06:34,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-25 00:06:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:34,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-25 00:06:34,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:06:34,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:34,943 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:06:35,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:35,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [814682500] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:06:35,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699273709] [2023-11-25 00:06:35,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:35,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:06:35,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:06:35,140 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:06:35,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-25 00:06:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:35,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-25 00:06:35,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:06:35,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:35,519 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:06:35,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:35,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699273709] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:06:35,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-25 00:06:35,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 5, 5] total 9 [2023-11-25 00:06:35,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592559212] [2023-11-25 00:06:35,782 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-25 00:06:35,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-25 00:06:35,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:06:35,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-25 00:06:35,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-25 00:06:35,785 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:35,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:06:35,973 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-11-25 00:06:35,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-25 00:06:35,973 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-25 00:06:35,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:06:35,974 INFO L225 Difference]: With dead ends: 14 [2023-11-25 00:06:35,974 INFO L226 Difference]: Without dead ends: 12 [2023-11-25 00:06:35,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-11-25 00:06:35,977 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 10 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:06:35,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 11 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:06:35,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-25 00:06:35,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-11-25 00:06:35,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:35,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-11-25 00:06:35,983 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2023-11-25 00:06:35,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:06:35,983 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-11-25 00:06:35,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:35,984 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-11-25 00:06:35,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-25 00:06:35,985 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:06:35,985 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2023-11-25 00:06:35,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-11-25 00:06:36,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/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)] Forceful destruction successful, exit code 0 [2023-11-25 00:06:36,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-25 00:06:36,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:06:36,588 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:06:36,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:06:36,588 INFO L85 PathProgramCache]: Analyzing trace with hash -2112524529, now seen corresponding path program 2 times [2023-11-25 00:06:36,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:06:36,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [993316974] [2023-11-25 00:06:36,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-25 00:06:36,590 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:06:36,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:06:36,591 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-25 00:06:36,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-25 00:06:36,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-25 00:06:36,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-25 00:06:36,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-25 00:06:36,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:06:36,988 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:36,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:06:37,412 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:37,412 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:06:37,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [993316974] [2023-11-25 00:06:37,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [993316974] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:06:37,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1881221325] [2023-11-25 00:06:37,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-25 00:06:37,413 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-25 00:06:37,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-25 00:06:37,415 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-25 00:06:37,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-11-25 00:06:37,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-25 00:06:37,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-25 00:06:37,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-25 00:06:37,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:06:37,766 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:37,766 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:06:38,108 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:38,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1881221325] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:06:38,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810970704] [2023-11-25 00:06:38,108 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-25 00:06:38,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:06:38,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:06:38,117 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:06:38,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-25 00:06:38,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-25 00:06:38,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-25 00:06:38,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-25 00:06:38,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:06:38,465 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:38,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:06:38,913 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:38,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810970704] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:06:38,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-25 00:06:38,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 11 [2023-11-25 00:06:38,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148082904] [2023-11-25 00:06:38,914 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-25 00:06:38,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-25 00:06:38,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:06:38,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-25 00:06:38,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-25 00:06:38,916 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:39,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:06:39,206 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2023-11-25 00:06:39,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-25 00:06:39,207 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-25 00:06:39,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:06:39,207 INFO L225 Difference]: With dead ends: 11 [2023-11-25 00:06:39,207 INFO L226 Difference]: Without dead ends: 0 [2023-11-25 00:06:39,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 6 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2023-11-25 00:06:39,209 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:06:39,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 0 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:06:39,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-25 00:06:39,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-25 00:06:39,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:39,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-25 00:06:39,211 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2023-11-25 00:06:39,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:06:39,212 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-25 00:06:39,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:39,213 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-25 00:06:39,213 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-25 00:06:39,216 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-25 00:06:39,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-25 00:06:39,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/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)] Forceful destruction successful, exit code 0 [2023-11-25 00:06:39,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-11-25 00:06:39,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/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_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt [2023-11-25 00:06:39,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-25 00:06:39,908 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-25 00:06:39,909 INFO L899 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2023-11-25 00:06:39,909 INFO L899 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2023-11-25 00:06:39,909 INFO L899 garLoopResultBuilder]: For program point L21-3(line 21) no Hoare annotation was computed. [2023-11-25 00:06:39,909 INFO L895 garLoopResultBuilder]: At program point L52-2(lines 52 93) the Hoare annotation is: (and (= (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_1~0#1|) (exists ((|ULTIMATE.start_main_~var_28_arg_1~0#1| (_ BitVec 8))) (= ((_ extract 7 0) (bvor (_ bv4 32) ((_ zero_extend 24) |ULTIMATE.start_main_~var_28_arg_1~0#1|))) |ULTIMATE.start_main_~state_18~0#1|)) (exists ((|ULTIMATE.start_main_~var_24_arg_0~0#1| (_ BitVec 8)) (|ULTIMATE.start_main_~var_28_arg_1~0#1| (_ BitVec 8))) (= ((_ extract 7 0) (bvor (bvshl ((_ zero_extend 24) |ULTIMATE.start_main_~var_24_arg_0~0#1|) (_ bv2 32)) ((_ zero_extend 24) ((_ extract 7 0) (bvand (_ bv3 32) ((_ zero_extend 24) ((_ extract 7 0) (bvashr ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv4 32) ((_ zero_extend 24) |ULTIMATE.start_main_~var_28_arg_1~0#1|)))) (_ bv1 32))))))))) |ULTIMATE.start_main_~state_5~0#1|)) (= (_ bv7 8) |ULTIMATE.start_main_~mask_SORT_3~0#1|) (= (_ bv2 32) |ULTIMATE.start_main_~var_9~0#1|) (= (_ bv3 8) |ULTIMATE.start_main_~mask_SORT_21~0#1|)) [2023-11-25 00:06:39,910 INFO L899 garLoopResultBuilder]: For program point L52-3(lines 52 93) no Hoare annotation was computed. [2023-11-25 00:06:39,910 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-25 00:06:39,910 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2023-11-25 00:06:39,913 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2023-11-25 00:06:39,916 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-25 00:06:39,929 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists ULTIMATE.start_main_~var_28_arg_1~0#1 : bv8 :: ~bvor~32(4bv32, ~zero_extend~32~8(ULTIMATE.start_main_~var_28_arg_1~0#1))[7:0] == ~state_18~0) could not be translated [2023-11-25 00:06:39,930 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists ULTIMATE.start_main_~var_24_arg_0~0#1 : bv8, ULTIMATE.start_main_~var_28_arg_1~0#1 : bv8 :: ~bvor~32(~bvshl~32(~zero_extend~32~8(ULTIMATE.start_main_~var_24_arg_0~0#1), 2bv32), ~zero_extend~32~8(~bvand~32(3bv32, ~zero_extend~32~8(~bvashr~32(~zero_extend~32~8(~bvor~32(4bv32, ~zero_extend~32~8(ULTIMATE.start_main_~var_28_arg_1~0#1))[7:0]), 1bv32)[7:0]))[7:0]))[7:0] == ~state_5~0) could not be translated [2023-11-25 00:06:39,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 12:06:39 BoogieIcfgContainer [2023-11-25 00:06:39,932 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-25 00:06:39,933 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-25 00:06:39,933 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-25 00:06:39,933 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-25 00:06:39,934 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:06:32" (3/4) ... [2023-11-25 00:06:39,936 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-25 00:06:39,946 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-11-25 00:06:39,946 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-25 00:06:39,946 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-25 00:06:39,947 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-25 00:06:40,058 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/witness.graphml [2023-11-25 00:06:40,058 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/witness.yml [2023-11-25 00:06:40,058 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-25 00:06:40,059 INFO L158 Benchmark]: Toolchain (without parser) took 8182.95ms. Allocated memory was 79.7MB in the beginning and 167.8MB in the end (delta: 88.1MB). Free memory was 55.3MB in the beginning and 55.3MB in the end (delta: 68.2kB). Peak memory consumption was 90.5MB. Max. memory is 16.1GB. [2023-11-25 00:06:40,059 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 79.7MB. Free memory was 55.8MB in the beginning and 55.6MB in the end (delta: 140.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:06:40,060 INFO L158 Benchmark]: CACSL2BoogieTranslator took 381.65ms. Allocated memory is still 79.7MB. Free memory was 55.1MB in the beginning and 43.1MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-25 00:06:40,060 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.11ms. Allocated memory is still 79.7MB. Free memory was 42.8MB in the beginning and 41.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-25 00:06:40,060 INFO L158 Benchmark]: Boogie Preprocessor took 29.71ms. Allocated memory is still 79.7MB. Free memory was 41.2MB in the beginning and 39.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-25 00:06:40,061 INFO L158 Benchmark]: RCFGBuilder took 476.76ms. Allocated memory is still 79.7MB. Free memory was 39.7MB in the beginning and 47.0MB in the end (delta: -7.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-25 00:06:40,061 INFO L158 Benchmark]: TraceAbstraction took 7117.90ms. Allocated memory was 79.7MB in the beginning and 167.8MB in the end (delta: 88.1MB). Free memory was 46.5MB in the beginning and 60.5MB in the end (delta: -14.0MB). Peak memory consumption was 76.2MB. Max. memory is 16.1GB. [2023-11-25 00:06:40,062 INFO L158 Benchmark]: Witness Printer took 125.23ms. Allocated memory is still 167.8MB. Free memory was 59.4MB in the beginning and 55.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-25 00:06:40,065 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 79.7MB. Free memory was 55.8MB in the beginning and 55.6MB in the end (delta: 140.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 381.65ms. Allocated memory is still 79.7MB. Free memory was 55.1MB in the beginning and 43.1MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.11ms. Allocated memory is still 79.7MB. Free memory was 42.8MB in the beginning and 41.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.71ms. Allocated memory is still 79.7MB. Free memory was 41.2MB in the beginning and 39.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 476.76ms. Allocated memory is still 79.7MB. Free memory was 39.7MB in the beginning and 47.0MB in the end (delta: -7.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * TraceAbstraction took 7117.90ms. Allocated memory was 79.7MB in the beginning and 167.8MB in the end (delta: 88.1MB). Free memory was 46.5MB in the beginning and 60.5MB in the end (delta: -14.0MB). Peak memory consumption was 76.2MB. Max. memory is 16.1GB. * Witness Printer took 125.23ms. Allocated memory is still 167.8MB. Free memory was 59.4MB in the beginning and 55.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists ULTIMATE.start_main_~var_28_arg_1~0#1 : bv8 :: ~bvor~32(4bv32, ~zero_extend~32~8(ULTIMATE.start_main_~var_28_arg_1~0#1))[7:0] == ~state_18~0) could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists ULTIMATE.start_main_~var_24_arg_0~0#1 : bv8, ULTIMATE.start_main_~var_28_arg_1~0#1 : bv8 :: ~bvor~32(~bvshl~32(~zero_extend~32~8(ULTIMATE.start_main_~var_24_arg_0~0#1), 2bv32), ~zero_extend~32~8(~bvand~32(3bv32, ~zero_extend~32~8(~bvashr~32(~zero_extend~32~8(~bvor~32(4bv32, ~zero_extend~32~8(ULTIMATE.start_main_~var_28_arg_1~0#1))[7:0]), 1bv32)[7:0]))[7:0]))[7:0] == ~state_5~0) could not be translated * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.0s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 56 IncrementalHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 4 mSDtfsCounter, 56 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 63 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=2, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 4 NumberOfFragments, 44 HoareAnnotationTreeSize, 1 FomulaSimplifications, 21 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 82 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 93 ConstructedInterpolants, 48 QuantifiedInterpolants, 3393 SizeOfPredicates, 192 NumberOfNonLiveVariables, 589 ConjunctsInSsa, 199 ConjunctsInUnsatCore, 13 InterpolantComputations, 1 PerfectInterpolantSequences, 0/54 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: ((((1 == mask_SORT_1) && (7 == mask_SORT_3)) && (2 == var_9)) && (3 == mask_SORT_21)) RESULT: Ultimate proved your program to be correct! [2023-11-25 00:06:40,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6297476-d341-4126-865d-6950330b353f/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE