./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Copenhagen_disj-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6541d485-40f3-4e70-8c30-f4ba2b3e101a/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6541d485-40f3-4e70-8c30-f4ba2b3e101a/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_6541d485-40f3-4e70-8c30-f4ba2b3e101a/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6541d485-40f3-4e70-8c30-f4ba2b3e101a/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Copenhagen_disj-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6541d485-40f3-4e70-8c30-f4ba2b3e101a/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6541d485-40f3-4e70-8c30-f4ba2b3e101a/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1d01e47d61f5460eefe4585d287e283c2c540ff348367265b7ce8811693dcaeb --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:48:52,989 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:48:53,113 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6541d485-40f3-4e70-8c30-f4ba2b3e101a/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Overflow-64bit-Taipan_Default.epf [2024-11-14 05:48:53,121 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:48:53,122 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:48:53,171 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:48:53,173 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:48:53,174 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:48:53,174 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:48:53,175 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:48:53,175 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:48:53,175 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:48:53,176 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:48:53,176 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 05:48:53,176 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:48:53,176 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:48:53,178 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 05:48:53,178 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 05:48:53,178 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:48:53,179 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 05:48:53,179 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 05:48:53,179 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 05:48:53,179 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:48:53,180 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:48:53,180 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:48:53,180 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:48:53,180 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:48:53,180 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:48:53,180 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:48:53,180 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:48:53,180 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-14 05:48:53,180 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 05:48:53,180 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:48:53,181 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:48:53,181 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:48:53,181 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:48:53,181 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:48:53,181 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:48:53,181 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:48:53,181 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:48:53,181 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:48:53,181 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 05:48:53,182 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 05:48:53,182 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:48:53,182 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:48:53,182 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 05:48:53,182 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_6541d485-40f3-4e70-8c30-f4ba2b3e101a/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 ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d01e47d61f5460eefe4585d287e283c2c540ff348367265b7ce8811693dcaeb [2024-11-14 05:48:53,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:48:53,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:48:53,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:48:53,590 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:48:53,590 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:48:53,593 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6541d485-40f3-4e70-8c30-f4ba2b3e101a/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/termination-crafted/Copenhagen_disj-1.c Unable to find full path for "g++" [2024-11-14 05:48:55,653 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:48:55,920 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:48:55,921 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6541d485-40f3-4e70-8c30-f4ba2b3e101a/sv-benchmarks/c/termination-crafted/Copenhagen_disj-1.c [2024-11-14 05:48:55,933 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6541d485-40f3-4e70-8c30-f4ba2b3e101a/bin/utaipan-verify-sOmjnqqW8E/data/a492d43f4/840d9736988747a4bf3fd8d8e2b15f7f/FLAGb756d27cd [2024-11-14 05:48:55,965 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6541d485-40f3-4e70-8c30-f4ba2b3e101a/bin/utaipan-verify-sOmjnqqW8E/data/a492d43f4/840d9736988747a4bf3fd8d8e2b15f7f [2024-11-14 05:48:55,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:48:55,971 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:48:55,973 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:48:55,974 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:48:55,979 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:48:55,980 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:48:55" (1/1) ... [2024-11-14 05:48:55,981 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eba2900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:55, skipping insertion in model container [2024-11-14 05:48:55,983 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:48:55" (1/1) ... [2024-11-14 05:48:56,001 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:48:56,179 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:48:56,185 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:48:56,197 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:48:56,211 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:48:56,212 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:56 WrapperNode [2024-11-14 05:48:56,212 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:48:56,214 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:48:56,214 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:48:56,214 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:48:56,222 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:56" (1/1) ... [2024-11-14 05:48:56,226 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:56" (1/1) ... [2024-11-14 05:48:56,244 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 25 [2024-11-14 05:48:56,244 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:48:56,246 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:48:56,246 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:48:56,246 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:48:56,251 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:56" (1/1) ... [2024-11-14 05:48:56,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:56" (1/1) ... [2024-11-14 05:48:56,252 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:56" (1/1) ... [2024-11-14 05:48:56,252 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:56" (1/1) ... [2024-11-14 05:48:56,254 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:56" (1/1) ... [2024-11-14 05:48:56,257 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:56" (1/1) ... [2024-11-14 05:48:56,258 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:56" (1/1) ... [2024-11-14 05:48:56,258 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:56" (1/1) ... [2024-11-14 05:48:56,259 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:48:56,260 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:48:56,260 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:48:56,260 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:48:56,263 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:56" (1/1) ... [2024-11-14 05:48:56,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:48:56,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6541d485-40f3-4e70-8c30-f4ba2b3e101a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:48:56,302 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6541d485-40f3-4e70-8c30-f4ba2b3e101a/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:48:56,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6541d485-40f3-4e70-8c30-f4ba2b3e101a/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:48:56,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:48:56,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:48:56,399 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:48:56,401 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:48:56,482 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-14 05:48:56,482 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:48:56,508 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:48:56,508 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 05:48:56,508 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:48:56 BoogieIcfgContainer [2024-11-14 05:48:56,509 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:48:56,511 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:48:56,511 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:48:56,516 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:48:56,516 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:48:55" (1/3) ... [2024-11-14 05:48:56,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ff33b06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:48:56, skipping insertion in model container [2024-11-14 05:48:56,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:56" (2/3) ... [2024-11-14 05:48:56,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ff33b06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:48:56, skipping insertion in model container [2024-11-14 05:48:56,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:48:56" (3/3) ... [2024-11-14 05:48:56,518 INFO L112 eAbstractionObserver]: Analyzing ICFG Copenhagen_disj-1.c [2024-11-14 05:48:56,535 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:48:56,538 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG Copenhagen_disj-1.c that has 1 procedures, 11 locations, 1 initial locations, 1 loop locations, and 4 error locations. [2024-11-14 05:48:56,601 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:48:56,615 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;@7ab64158, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:48:56,615 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-14 05:48:56,622 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:48:56,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-14 05:48:56,630 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:48:56,630 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-14 05:48:56,631 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-14 05:48:56,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:48:56,639 INFO L85 PathProgramCache]: Analyzing trace with hash 56059, now seen corresponding path program 1 times [2024-11-14 05:48:56,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:48:56,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092343978] [2024-11-14 05:48:56,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:56,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:48:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 05:48:56,756 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 05:48:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 05:48:56,784 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-14 05:48:56,786 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-14 05:48:56,787 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2024-11-14 05:48:56,790 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2024-11-14 05:48:56,790 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2024-11-14 05:48:56,790 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2024-11-14 05:48:56,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 05:48:56,796 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-14 05:48:56,815 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 05:48:56,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 05:48:56 BoogieIcfgContainer [2024-11-14 05:48:56,819 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 05:48:56,820 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 05:48:56,820 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 05:48:56,821 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 05:48:56,821 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:48:56" (3/4) ... [2024-11-14 05:48:56,822 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-14 05:48:56,864 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6541d485-40f3-4e70-8c30-f4ba2b3e101a/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-14 05:48:56,867 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 05:48:56,869 INFO L158 Benchmark]: Toolchain (without parser) took 898.16ms. Allocated memory is still 142.6MB. Free memory was 118.7MB in the beginning and 83.5MB in the end (delta: 35.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-14 05:48:56,869 INFO L158 Benchmark]: CDTParser took 0.59ms. Allocated memory is still 142.6MB. Free memory is still 79.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:48:56,873 INFO L158 Benchmark]: CACSL2BoogieTranslator took 240.91ms. Allocated memory is still 142.6MB. Free memory was 118.5MB in the beginning and 108.7MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 05:48:56,873 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.91ms. Allocated memory is still 142.6MB. Free memory was 108.7MB in the beginning and 107.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:48:56,873 INFO L158 Benchmark]: Boogie Preprocessor took 13.68ms. Allocated memory is still 142.6MB. Free memory was 107.7MB in the beginning and 107.2MB in the end (delta: 517.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:48:56,874 INFO L158 Benchmark]: RCFGBuilder took 248.86ms. Allocated memory is still 142.6MB. Free memory was 106.9MB in the beginning and 97.2MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 05:48:56,874 INFO L158 Benchmark]: TraceAbstraction took 308.55ms. Allocated memory is still 142.6MB. Free memory was 96.7MB in the beginning and 85.3MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 05:48:56,874 INFO L158 Benchmark]: Witness Printer took 47.27ms. Allocated memory is still 142.6MB. Free memory was 85.3MB in the beginning and 83.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:48:56,879 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59ms. Allocated memory is still 142.6MB. Free memory is still 79.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 240.91ms. Allocated memory is still 142.6MB. Free memory was 118.5MB in the beginning and 108.7MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.91ms. Allocated memory is still 142.6MB. Free memory was 108.7MB in the beginning and 107.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 13.68ms. Allocated memory is still 142.6MB. Free memory was 107.7MB in the beginning and 107.2MB in the end (delta: 517.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 248.86ms. Allocated memory is still 142.6MB. Free memory was 106.9MB in the beginning and 97.2MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 308.55ms. Allocated memory is still 142.6MB. Free memory was 96.7MB in the beginning and 85.3MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Witness Printer took 47.27ms. Allocated memory is still 142.6MB. Free memory was 85.3MB in the beginning and 83.5MB in the end (delta: 1.8MB). 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 - CounterExampleResult [Line: 18]: integer overflow possible integer overflow possible We found a FailurePath: [L13] int x, y, oldx; [L14] x = __VERIFIER_nondet_int() [L15] y = __VERIFIER_nondet_int() [L16] COND TRUE x >= 0 || y >= 0 [L17] oldx = x VAL [oldx=0, y=-2147483648] [L18] y - 1 VAL [oldx=0] - UnprovableResult [Line: 18]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, 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=11occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 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 proved your program to be incorrect! [2024-11-14 05:48:56,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6541d485-40f3-4e70-8c30-f4ba2b3e101a/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)