./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_two.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_two.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E --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 3d80a08c66b9b1eadaab4dbad5179d13f0d2ba2cc2da58b84f0d125081ac09c4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:16:16,353 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:16:16,480 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-14 05:16:16,489 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:16:16,489 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:16:16,516 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:16:16,517 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:16:16,517 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:16:16,517 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:16:16,517 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:16:16,517 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:16:16,518 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:16:16,518 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:16:16,518 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 05:16:16,518 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:16:16,518 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:16:16,518 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 05:16:16,518 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 05:16:16,518 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:16:16,519 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 05:16:16,519 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 05:16:16,519 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 05:16:16,519 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:16:16,519 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:16:16,520 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:16:16,520 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:16:16,520 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:16:16,520 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:16:16,520 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:16:16,520 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:16:16,520 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:16:16,520 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:16:16,520 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:16:16,521 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:16:16,521 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:16:16,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:16:16,521 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:16:16,521 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:16:16,521 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:16:16,521 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 05:16:16,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 05:16:16,521 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:16:16,522 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:16:16,522 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 05:16:16,522 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E 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 -> 3d80a08c66b9b1eadaab4dbad5179d13f0d2ba2cc2da58b84f0d125081ac09c4 [2024-11-14 05:16:16,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:16:16,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:16:16,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:16:16,917 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:16:16,918 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:16:16,919 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_two.c Unable to find full path for "g++" [2024-11-14 05:16:19,276 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:16:19,583 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:16:19,584 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_two.c [2024-11-14 05:16:19,593 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/data/55f4efcf7/7655238f6cfb482b8dfb99ed0f4181a3/FLAGa17277b40 [2024-11-14 05:16:19,610 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/data/55f4efcf7/7655238f6cfb482b8dfb99ed0f4181a3 [2024-11-14 05:16:19,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:16:19,615 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:16:19,617 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:16:19,617 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:16:19,623 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:16:19,624 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:16:19" (1/1) ... [2024-11-14 05:16:19,625 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27e607dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:19, skipping insertion in model container [2024-11-14 05:16:19,625 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:16:19" (1/1) ... [2024-11-14 05:16:19,644 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:16:19,851 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_two.c[1248,1261] [2024-11-14 05:16:19,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:16:19,927 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:16:19,941 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_two.c[1248,1261] [2024-11-14 05:16:19,978 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:16:20,003 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:16:20,004 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:20 WrapperNode [2024-11-14 05:16:20,005 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:16:20,006 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:16:20,008 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:16:20,008 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:16:20,017 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:20" (1/1) ... [2024-11-14 05:16:20,025 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:20" (1/1) ... [2024-11-14 05:16:20,057 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 130 [2024-11-14 05:16:20,057 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:16:20,058 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:16:20,058 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:16:20,058 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:16:20,071 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:20" (1/1) ... [2024-11-14 05:16:20,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:20" (1/1) ... [2024-11-14 05:16:20,077 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:20" (1/1) ... [2024-11-14 05:16:20,078 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:20" (1/1) ... [2024-11-14 05:16:20,091 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:20" (1/1) ... [2024-11-14 05:16:20,098 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:20" (1/1) ... [2024-11-14 05:16:20,108 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:20" (1/1) ... [2024-11-14 05:16:20,110 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:20" (1/1) ... [2024-11-14 05:16:20,116 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:16:20,117 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:16:20,117 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:16:20,117 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:16:20,121 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:20" (1/1) ... [2024-11-14 05:16:20,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:16:20,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:16:20,167 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:16:20,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:16:20,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:16:20,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 05:16:20,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:16:20,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:16:20,312 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:16:20,315 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:16:20,731 INFO L? ?]: Removed 59 outVars from TransFormulas that were not future-live. [2024-11-14 05:16:20,731 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:16:21,013 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:16:21,014 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 05:16:21,014 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:16:21 BoogieIcfgContainer [2024-11-14 05:16:21,014 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:16:21,018 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:16:21,019 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:16:21,024 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:16:21,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:16:19" (1/3) ... [2024-11-14 05:16:21,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a44c491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:16:21, skipping insertion in model container [2024-11-14 05:16:21,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:20" (2/3) ... [2024-11-14 05:16:21,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a44c491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:16:21, skipping insertion in model container [2024-11-14 05:16:21,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:16:21" (3/3) ... [2024-11-14 05:16:21,027 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.swap_two.c [2024-11-14 05:16:21,046 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:16:21,048 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.swap_two.c that has 1 procedures, 7 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-14 05:16:21,112 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:16:21,124 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@f188a81, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:16:21,124 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 05:16:21,130 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:21,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 05:16:21,137 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:16:21,138 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 05:16:21,139 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:16:21,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:16:21,148 INFO L85 PathProgramCache]: Analyzing trace with hash 5427086, now seen corresponding path program 1 times [2024-11-14 05:16:21,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:16:21,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88072594] [2024-11-14 05:16:21,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:16:21,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:16:21,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 05:16:21,452 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 05:16:21,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 05:16:21,570 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-14 05:16:21,573 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-14 05:16:21,574 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-14 05:16:21,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 05:16:21,582 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-14 05:16:21,611 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 05:16:21,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 05:16:21 BoogieIcfgContainer [2024-11-14 05:16:21,618 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 05:16:21,619 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 05:16:21,619 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 05:16:21,619 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 05:16:21,620 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:16:21" (3/4) ... [2024-11-14 05:16:21,624 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-14 05:16:21,625 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 05:16:21,627 INFO L158 Benchmark]: Toolchain (without parser) took 2011.64ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 67.2MB in the end (delta: 24.4MB). Peak memory consumption was 21.2MB. Max. memory is 16.1GB. [2024-11-14 05:16:21,631 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 83.9MB. Free memory is still 39.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:16:21,631 INFO L158 Benchmark]: CACSL2BoogieTranslator took 388.62ms. Allocated memory is still 117.4MB. Free memory was 91.2MB in the beginning and 79.4MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 05:16:21,632 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.66ms. Allocated memory is still 117.4MB. Free memory was 79.4MB in the beginning and 77.2MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 05:16:21,632 INFO L158 Benchmark]: Boogie Preprocessor took 58.06ms. Allocated memory is still 117.4MB. Free memory was 77.2MB in the beginning and 75.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:16:21,633 INFO L158 Benchmark]: RCFGBuilder took 897.73ms. Allocated memory is still 117.4MB. Free memory was 75.9MB in the beginning and 90.1MB in the end (delta: -14.1MB). Peak memory consumption was 46.3MB. Max. memory is 16.1GB. [2024-11-14 05:16:21,633 INFO L158 Benchmark]: TraceAbstraction took 599.40ms. Allocated memory is still 117.4MB. Free memory was 89.4MB in the beginning and 67.2MB in the end (delta: 22.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 05:16:21,634 INFO L158 Benchmark]: Witness Printer took 7.05ms. Allocated memory is still 117.4MB. Free memory is still 67.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:16:21,637 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 83.9MB. Free memory is still 39.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 388.62ms. Allocated memory is still 117.4MB. Free memory was 91.2MB in the beginning and 79.4MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.66ms. Allocated memory is still 117.4MB. Free memory was 79.4MB in the beginning and 77.2MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.06ms. Allocated memory is still 117.4MB. Free memory was 77.2MB in the beginning and 75.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 897.73ms. Allocated memory is still 117.4MB. Free memory was 75.9MB in the beginning and 90.1MB in the end (delta: -14.1MB). Peak memory consumption was 46.3MB. Max. memory is 16.1GB. * TraceAbstraction took 599.40ms. Allocated memory is still 117.4MB. Free memory was 89.4MB in the beginning and 67.2MB in the end (delta: 22.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 7.05ms. Allocated memory is still 117.4MB. Free memory is still 67.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 71, overapproximation of bitwiseAnd at line 44, 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_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 20); [L30] const SORT_4 msb_SORT_4 = (SORT_4)1 << (20 - 1); [L32] const SORT_8 mask_SORT_8 = (SORT_8)-1 >> (sizeof(SORT_8) * 8 - 32); [L33] const SORT_8 msb_SORT_8 = (SORT_8)1 << (32 - 1); [L35] const SORT_4 var_5 = 100; [L36] const SORT_8 var_10 = 100; [L37] const SORT_8 var_13 = 200; [L38] const SORT_1 var_18 = 1; [L39] const SORT_4 var_22 = 200; [L41] SORT_1 input_2; [L42] SORT_1 input_3; [L44] EXPR __VERIFIER_nondet_uint() & mask_SORT_4 [L44] SORT_4 state_6 = __VERIFIER_nondet_uint() & mask_SORT_4; [L45] EXPR __VERIFIER_nondet_uint() & mask_SORT_4 [L45] SORT_4 state_23 = __VERIFIER_nondet_uint() & mask_SORT_4; [L47] SORT_4 init_7_arg_1 = var_5; [L48] state_6 = init_7_arg_1 [L49] SORT_4 init_24_arg_1 = var_22; [L50] state_23 = init_24_arg_1 VAL [mask_SORT_1=1, mask_SORT_4=1048575, state_23=200, state_6=100, var_10=100, var_13=200, var_18=1] [L53] input_2 = __VERIFIER_nondet_uchar() [L54] input_3 = __VERIFIER_nondet_uchar() [L57] SORT_4 var_9_arg_0 = state_6; [L58] EXPR var_9_arg_0 & mask_SORT_4 [L58] var_9_arg_0 = var_9_arg_0 & mask_SORT_4 [L59] SORT_8 var_9 = var_9_arg_0; [L60] SORT_8 var_11_arg_0 = var_9; [L61] SORT_8 var_11_arg_1 = var_10; [L62] SORT_1 var_11 = var_11_arg_0 == var_11_arg_1; [L63] SORT_4 var_12_arg_0 = state_6; [L64] EXPR var_12_arg_0 & mask_SORT_4 [L64] var_12_arg_0 = var_12_arg_0 & mask_SORT_4 [L65] SORT_8 var_12 = var_12_arg_0; [L66] SORT_8 var_14_arg_0 = var_12; [L67] SORT_8 var_14_arg_1 = var_13; [L68] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L69] SORT_1 var_15_arg_0 = var_11; [L70] SORT_1 var_15_arg_1 = var_14; [L71] EXPR var_15_arg_0 | var_15_arg_1 [L71] SORT_1 var_15 = var_15_arg_0 | var_15_arg_1; [L72] SORT_1 var_19_arg_0 = var_15; [L73] SORT_1 var_19 = ~var_19_arg_0; [L74] SORT_1 var_20_arg_0 = var_18; [L75] SORT_1 var_20_arg_1 = var_19; [L76] EXPR var_20_arg_0 & var_20_arg_1 [L76] SORT_1 var_20 = var_20_arg_0 & var_20_arg_1; [L77] EXPR var_20 & mask_SORT_1 [L77] var_20 = var_20 & mask_SORT_1 [L78] SORT_1 bad_21_arg_0 = var_20; [L79] CALL __VERIFIER_assert(!(bad_21_arg_0)) [L21] COND TRUE !(cond) [L21] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-14 05:16:21,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_two.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E --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 3d80a08c66b9b1eadaab4dbad5179d13f0d2ba2cc2da58b84f0d125081ac09c4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:16:24,862 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:16:25,037 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2024-11-14 05:16:25,050 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:16:25,051 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:16:25,096 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:16:25,097 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:16:25,097 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:16:25,097 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:16:25,099 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:16:25,100 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:16:25,100 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:16:25,100 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:16:25,100 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:16:25,101 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:16:25,101 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:16:25,101 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:16:25,102 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:16:25,102 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:16:25,103 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:16:25,103 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:16:25,103 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:16:25,103 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 05:16:25,103 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-14 05:16:25,103 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:16:25,103 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-14 05:16:25,104 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:16:25,104 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:16:25,104 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:16:25,104 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-14 05:16:25,104 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:16:25,105 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:16:25,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:16:25,105 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:16:25,105 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:16:25,106 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:16:25,107 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-14 05:16:25,107 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-14 05:16:25,107 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:16:25,107 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:16:25,107 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E 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 -> 3d80a08c66b9b1eadaab4dbad5179d13f0d2ba2cc2da58b84f0d125081ac09c4 [2024-11-14 05:16:25,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:16:25,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:16:25,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:16:25,531 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:16:25,534 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:16:25,535 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_two.c Unable to find full path for "g++" [2024-11-14 05:16:27,875 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:16:28,152 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:16:28,153 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_two.c [2024-11-14 05:16:28,169 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/data/01a8b32f4/fae6cd1260904e5ebd3110922bb17d6b/FLAG848b351f9 [2024-11-14 05:16:28,192 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/data/01a8b32f4/fae6cd1260904e5ebd3110922bb17d6b [2024-11-14 05:16:28,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:16:28,197 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:16:28,199 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:16:28,199 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:16:28,205 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:16:28,206 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:16:28" (1/1) ... [2024-11-14 05:16:28,207 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60b151f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:28, skipping insertion in model container [2024-11-14 05:16:28,207 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:16:28" (1/1) ... [2024-11-14 05:16:28,227 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:16:28,452 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_two.c[1248,1261] [2024-11-14 05:16:28,517 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:16:28,537 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:16:28,554 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_two.c[1248,1261] [2024-11-14 05:16:28,590 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:16:28,616 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:16:28,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:28 WrapperNode [2024-11-14 05:16:28,617 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:16:28,619 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:16:28,619 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:16:28,620 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:16:28,632 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:28" (1/1) ... [2024-11-14 05:16:28,645 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:28" (1/1) ... [2024-11-14 05:16:28,673 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 74 [2024-11-14 05:16:28,675 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:16:28,676 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:16:28,677 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:16:28,677 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:16:28,689 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:28" (1/1) ... [2024-11-14 05:16:28,690 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:28" (1/1) ... [2024-11-14 05:16:28,694 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:28" (1/1) ... [2024-11-14 05:16:28,695 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:28" (1/1) ... [2024-11-14 05:16:28,704 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:28" (1/1) ... [2024-11-14 05:16:28,708 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:28" (1/1) ... [2024-11-14 05:16:28,709 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:28" (1/1) ... [2024-11-14 05:16:28,710 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:28" (1/1) ... [2024-11-14 05:16:28,713 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:16:28,714 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:16:28,714 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:16:28,714 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:16:28,715 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:28" (1/1) ... [2024-11-14 05:16:28,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:16:28,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:16:28,754 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:16:28,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:16:28,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:16:28,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-14 05:16:28,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:16:28,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:16:28,920 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:16:28,923 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:16:29,161 INFO L? ?]: Removed 32 outVars from TransFormulas that were not future-live. [2024-11-14 05:16:29,161 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:16:29,178 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:16:29,178 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 05:16:29,179 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:16:29 BoogieIcfgContainer [2024-11-14 05:16:29,179 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:16:29,183 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:16:29,184 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:16:29,190 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:16:29,190 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:16:28" (1/3) ... [2024-11-14 05:16:29,191 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a07199d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:16:29, skipping insertion in model container [2024-11-14 05:16:29,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:28" (2/3) ... [2024-11-14 05:16:29,192 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a07199d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:16:29, skipping insertion in model container [2024-11-14 05:16:29,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:16:29" (3/3) ... [2024-11-14 05:16:29,193 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.swap_two.c [2024-11-14 05:16:29,214 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:16:29,216 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.swap_two.c that has 1 procedures, 10 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-14 05:16:29,297 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:16:29,319 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@65ed5054, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:16:29,319 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 05:16:29,324 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 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) [2024-11-14 05:16:29,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-14 05:16:29,332 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:16:29,334 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-14 05:16:29,335 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:16:29,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:16:29,342 INFO L85 PathProgramCache]: Analyzing trace with hash 28694789, now seen corresponding path program 1 times [2024-11-14 05:16:29,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:16:29,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926312098] [2024-11-14 05:16:29,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:16:29,358 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:16:29,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:16:29,362 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:16:29,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-14 05:16:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:16:29,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-14 05:16:29,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:16:30,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:30,051 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:16:30,052 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:16:30,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926312098] [2024-11-14 05:16:30,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926312098] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:16:30,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:16:30,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:16:30,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907865846] [2024-11-14 05:16:30,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:16:30,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:16:30,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:16:30,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:16:30,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:16:30,092 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 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) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:30,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:16:30,178 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2024-11-14 05:16:30,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:16:30,182 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-14 05:16:30,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:16:30,193 INFO L225 Difference]: With dead ends: 18 [2024-11-14 05:16:30,194 INFO L226 Difference]: Without dead ends: 10 [2024-11-14 05:16:30,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:16:30,202 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:16:30,207 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 11 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:16:30,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-11-14 05:16:30,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2024-11-14 05:16:30,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:30,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2024-11-14 05:16:30,249 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2024-11-14 05:16:30,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:16:30,251 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2024-11-14 05:16:30,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:30,252 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2024-11-14 05:16:30,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-14 05:16:30,252 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:16:30,252 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-14 05:16:30,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-14 05:16:30,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:16:30,453 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:16:30,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:16:30,454 INFO L85 PathProgramCache]: Analyzing trace with hash 152739811, now seen corresponding path program 1 times [2024-11-14 05:16:30,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:16:30,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1610346054] [2024-11-14 05:16:30,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:16:30,455 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:16:30,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:16:30,459 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:16:30,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-14 05:16:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:16:30,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:16:30,610 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:16:30,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:30,917 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:16:31,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:31,412 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:16:31,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1610346054] [2024-11-14 05:16:31,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1610346054] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:16:31,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1045168156] [2024-11-14 05:16:31,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:16:31,413 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:16:31,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:16:31,420 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:16:31,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-14 05:16:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:16:31,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:16:31,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:16:31,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:31,813 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:16:32,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:32,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1045168156] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:16:32,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121172719] [2024-11-14 05:16:32,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:16:32,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:16:32,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:16:32,066 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:16:32,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 05:16:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:16:32,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-14 05:16:32,204 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:16:32,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:32,456 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:16:32,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:32,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121172719] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:16:32,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:16:32,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 10 [2024-11-14 05:16:32,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005114427] [2024-11-14 05:16:32,755 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:16:32,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 05:16:32,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:16:32,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 05:16:32,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-14 05:16:32,757 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:32,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:16:32,861 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2024-11-14 05:16:32,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:16:32,862 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-14 05:16:32,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:16:32,863 INFO L225 Difference]: With dead ends: 14 [2024-11-14 05:16:32,863 INFO L226 Difference]: Without dead ends: 12 [2024-11-14 05:16:32,863 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-14 05:16:32,864 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 7 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:16:32,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 10 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:16:32,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-11-14 05:16:32,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-11-14 05:16:32,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:32,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2024-11-14 05:16:32,870 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2024-11-14 05:16:32,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:16:32,871 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2024-11-14 05:16:32,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:32,871 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2024-11-14 05:16:32,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 05:16:32,872 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:16:32,872 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-11-14 05:16:32,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-14 05:16:33,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-11-14 05:16:33,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 05:16:33,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:16:33,473 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:16:33,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:16:33,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1906115653, now seen corresponding path program 2 times [2024-11-14 05:16:33,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:16:33,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1039826975] [2024-11-14 05:16:33,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 05:16:33,475 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:16:33,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:16:33,479 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:16:33,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-14 05:16:33,612 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 05:16:33,613 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:16:33,616 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-14 05:16:33,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:16:33,902 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:16:33,903 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:16:34,282 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:16:34,282 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:16:34,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1039826975] [2024-11-14 05:16:34,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1039826975] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:16:34,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1485151769] [2024-11-14 05:16:34,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 05:16:34,283 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:16:34,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:16:34,287 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:16:34,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-11-14 05:16:34,526 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 05:16:34,526 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:16:34,534 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-14 05:16:34,538 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:16:34,718 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:16:34,718 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:16:35,007 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:16:35,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1485151769] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:16:35,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729570688] [2024-11-14 05:16:35,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 05:16:35,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:16:35,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:16:35,011 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:16:35,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 05:16:35,156 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 05:16:35,157 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:16:35,159 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-14 05:16:35,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:16:35,455 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:16:35,455 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:16:35,811 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:16:35,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729570688] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:16:35,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:16:35,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 10 [2024-11-14 05:16:35,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845943508] [2024-11-14 05:16:35,812 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:16:35,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 05:16:35,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:16:35,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 05:16:35,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-14 05:16:35,813 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:35,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:16:35,896 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2024-11-14 05:16:35,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 05:16:35,897 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 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 11 [2024-11-14 05:16:35,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:16:35,898 INFO L225 Difference]: With dead ends: 12 [2024-11-14 05:16:35,898 INFO L226 Difference]: Without dead ends: 0 [2024-11-14 05:16:35,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-14 05:16:35,899 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:16:35,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:16:35,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-14 05:16:35,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-14 05:16:35,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:35,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-14 05:16:35,901 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2024-11-14 05:16:35,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:16:35,901 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-14 05:16:35,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:35,902 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-14 05:16:35,902 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-14 05:16:35,905 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-14 05:16:35,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-11-14 05:16:36,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2024-11-14 05:16:36,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-14 05:16:36,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/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_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:16:36,513 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1] [2024-11-14 05:16:36,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-14 05:16:36,578 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 05:16:36,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 05:16:36 BoogieIcfgContainer [2024-11-14 05:16:36,604 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 05:16:36,605 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 05:16:36,608 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 05:16:36,609 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 05:16:36,610 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:16:29" (3/4) ... [2024-11-14 05:16:36,612 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-14 05:16:36,625 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-11-14 05:16:36,626 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-14 05:16:36,626 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-14 05:16:36,626 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-14 05:16:36,670 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.witnessprinter has thrown an exception: java.lang.NullPointerException: Cannot invoke "org.eclipse.cdt.core.dom.ast.IASTNode.getRawSignature()" because "" is null at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromIASTNode(CACSLBacktranslationValueProvider.java:80) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromStep(CACSLBacktranslationValueProvider.java:61) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromStep(CACSLBacktranslationValueProvider.java:1) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.GeneratedWitnessEdge.getSourceCode(GeneratedWitnessEdge.java:156) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.GraphMLCorrectnessWitnessGenerator.lambda$2(GraphMLCorrectnessWitnessGenerator.java:91) at edu.uci.ics.jung.io.GraphMLWriter.writeEdgeData(GraphMLWriter.java:237) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.UltimateGraphMLWriter.save(UltimateGraphMLWriter.java:106) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.GraphMLCorrectnessWitnessGenerator.makeGraphMLString(GraphMLCorrectnessWitnessGenerator.java:111) at de.uni_freiburg.informatik.ultimate.witnessprinter.WitnessPrinter.generateProofWitness(WitnessPrinter.java:168) at de.uni_freiburg.informatik.ultimate.witnessprinter.WitnessPrinter.finish(WitnessPrinter.java:143) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:130) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:16:36,676 INFO L158 Benchmark]: Toolchain (without parser) took 8478.68ms. Allocated memory was 83.9MB in the beginning and 134.2MB in the end (delta: 50.3MB). Free memory was 59.9MB in the beginning and 61.7MB in the end (delta: -1.8MB). Peak memory consumption was 47.7MB. Max. memory is 16.1GB. [2024-11-14 05:16:36,677 INFO L158 Benchmark]: CDTParser took 1.02ms. Allocated memory is still 83.9MB. Free memory is still 65.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:16:36,678 INFO L158 Benchmark]: CACSL2BoogieTranslator took 418.97ms. Allocated memory is still 83.9MB. Free memory was 59.7MB in the beginning and 47.7MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 05:16:36,679 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.17ms. Allocated memory is still 83.9MB. Free memory was 47.4MB in the beginning and 46.2MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 05:16:36,680 INFO L158 Benchmark]: Boogie Preprocessor took 36.57ms. Allocated memory is still 83.9MB. Free memory was 46.2MB in the beginning and 45.2MB in the end (delta: 965.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:16:36,681 INFO L158 Benchmark]: RCFGBuilder took 465.27ms. Allocated memory is still 83.9MB. Free memory was 45.2MB in the beginning and 33.6MB in the end (delta: 11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 05:16:36,681 INFO L158 Benchmark]: TraceAbstraction took 7421.20ms. Allocated memory was 83.9MB in the beginning and 134.2MB in the end (delta: 50.3MB). Free memory was 33.0MB in the beginning and 64.4MB in the end (delta: -31.4MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. [2024-11-14 05:16:36,682 INFO L158 Benchmark]: Witness Printer took 69.78ms. Allocated memory is still 134.2MB. Free memory was 64.4MB in the beginning and 61.7MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:16:36,684 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.02ms. Allocated memory is still 83.9MB. Free memory is still 65.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 418.97ms. Allocated memory is still 83.9MB. Free memory was 59.7MB in the beginning and 47.7MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.17ms. Allocated memory is still 83.9MB. Free memory was 47.4MB in the beginning and 46.2MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.57ms. Allocated memory is still 83.9MB. Free memory was 46.2MB in the beginning and 45.2MB in the end (delta: 965.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 465.27ms. Allocated memory is still 83.9MB. Free memory was 45.2MB in the beginning and 33.6MB in the end (delta: 11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 7421.20ms. Allocated memory was 83.9MB in the beginning and 134.2MB in the end (delta: 50.3MB). Free memory was 33.0MB in the beginning and 64.4MB in the end (delta: -31.4MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. * Witness Printer took 69.78ms. Allocated memory is still 134.2MB. Free memory was 64.4MB in the beginning and 61.7MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.2s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 29 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 19 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 58 IncrementalHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 10 mSDtfsCounter, 58 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 84 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=2, InterpolantAutomatonStates: 15, 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 106 ConstructedInterpolants, 33 QuantifiedInterpolants, 2383 SizeOfPredicates, 28 NumberOfNonLiveVariables, 566 ConjunctsInSsa, 162 ConjunctsInUnsatCore, 13 InterpolantComputations, 1 PerfectInterpolantSequences, 6/54 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: 51]: Loop Invariant Derived loop invariant: (((((((200 == var_13) && (100 == state_23)) && (1 == mask_SORT_1)) && (1048575 == mask_SORT_4)) && (100 == var_10)) && (200 == state_6)) || ((((((100 == state_6) && (200 == var_13)) && (200 == state_23)) && (1 == mask_SORT_1)) && (1048575 == mask_SORT_4)) && (100 == var_10))) * Results from de.uni_freiburg.informatik.ultimate.witnessprinter: - ExceptionOrErrorResult: NullPointerException: Cannot invoke "org.eclipse.cdt.core.dom.ast.IASTNode.getRawSignature()" because "" is null de.uni_freiburg.informatik.ultimate.witnessprinter: NullPointerException: Cannot invoke "org.eclipse.cdt.core.dom.ast.IASTNode.getRawSignature()" because "" is null: de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromIASTNode(CACSLBacktranslationValueProvider.java:80) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2024-11-14 05:16:36,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb6d49b9-095d-4015-8f60-e76f14725211/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: Cannot invoke "org.eclipse.cdt.core.dom.ast.IASTNode.getRawSignature()" because "" is null