./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-bwb/display-bit1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5243dbc6-8a4f-4318-859f-fb5d6c674f3a/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5243dbc6-8a4f-4318-859f-fb5d6c674f3a/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5243dbc6-8a4f-4318-859f-fb5d6c674f3a/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5243dbc6-8a4f-4318-859f-fb5d6c674f3a/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-bwb/display-bit1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5243dbc6-8a4f-4318-859f-fb5d6c674f3a/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5243dbc6-8a4f-4318-859f-fb5d6c674f3a/bin/utaipan-verify-t7M7D8N6sZ --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 1b9a08886a56ed1f5b1987fef70463691f86d0e26c09f07ffd7b40b2019e3a8a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:15:31,761 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:15:31,902 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5243dbc6-8a4f-4318-859f-fb5d6c674f3a/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-19 04:15:31,907 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:15:31,909 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:15:31,948 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:15:31,949 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:15:31,950 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:15:31,951 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:15:31,956 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:15:31,957 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:15:31,958 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:15:31,958 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:15:31,960 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:15:31,961 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:15:31,961 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:15:31,962 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:15:31,962 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:15:31,962 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:15:31,963 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:15:31,963 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:15:31,964 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:15:31,965 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:15:31,966 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:15:31,966 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:15:31,967 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:15:31,967 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:15:31,967 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:15:31,968 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:15:31,968 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:15:31,970 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:15:31,970 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:15:31,970 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:15:31,971 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:15:31,971 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:15:31,971 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:15:31,972 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:15:31,972 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:15:31,972 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:15:31,972 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:15:31,973 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:15:31,974 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:15:31,974 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:15:31,975 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:15:31,975 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5243dbc6-8a4f-4318-859f-fb5d6c674f3a/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5243dbc6-8a4f-4318-859f-fb5d6c674f3a/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b9a08886a56ed1f5b1987fef70463691f86d0e26c09f07ffd7b40b2019e3a8a [2023-11-19 04:15:32,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:15:32,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:15:32,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:15:32,397 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:15:32,397 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:15:32,398 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5243dbc6-8a4f-4318-859f-fb5d6c674f3a/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/termination-bwb/display-bit1.i [2023-11-19 04:15:35,486 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:15:35,764 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:15:35,764 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5243dbc6-8a4f-4318-859f-fb5d6c674f3a/sv-benchmarks/c/termination-bwb/display-bit1.i [2023-11-19 04:15:35,777 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5243dbc6-8a4f-4318-859f-fb5d6c674f3a/bin/utaipan-verify-t7M7D8N6sZ/data/b243e750f/edd059b924d749c4b1c8290c0159f0b0/FLAG2ab3265f9 [2023-11-19 04:15:35,792 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5243dbc6-8a4f-4318-859f-fb5d6c674f3a/bin/utaipan-verify-t7M7D8N6sZ/data/b243e750f/edd059b924d749c4b1c8290c0159f0b0 [2023-11-19 04:15:35,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:15:35,796 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:15:35,797 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:15:35,798 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:15:35,803 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:15:35,804 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:15:35" (1/1) ... [2023-11-19 04:15:35,805 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@709fc39a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:35, skipping insertion in model container [2023-11-19 04:15:35,805 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:15:35" (1/1) ... [2023-11-19 04:15:35,848 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:15:36,103 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:15:36,110 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:15:36,162 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:15:36,184 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:15:36,192 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:15:36,193 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:36 WrapperNode [2023-11-19 04:15:36,193 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:15:36,195 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:15:36,195 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:15:36,195 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:15:36,205 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:36" (1/1) ... [2023-11-19 04:15:36,218 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:36" (1/1) ... [2023-11-19 04:15:36,235 INFO L138 Inliner]: procedures = 88, calls = 3, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 25 [2023-11-19 04:15:36,236 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:15:36,236 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:15:36,236 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:15:36,236 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:15:36,243 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:36" (1/1) ... [2023-11-19 04:15:36,243 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:36" (1/1) ... [2023-11-19 04:15:36,245 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:36" (1/1) ... [2023-11-19 04:15:36,246 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:36" (1/1) ... [2023-11-19 04:15:36,249 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:36" (1/1) ... [2023-11-19 04:15:36,252 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:36" (1/1) ... [2023-11-19 04:15:36,253 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:36" (1/1) ... [2023-11-19 04:15:36,254 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:36" (1/1) ... [2023-11-19 04:15:36,256 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:15:36,256 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:15:36,257 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:15:36,257 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:15:36,258 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:36" (1/1) ... [2023-11-19 04:15:36,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:15:36,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5243dbc6-8a4f-4318-859f-fb5d6c674f3a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:15:36,327 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5243dbc6-8a4f-4318-859f-fb5d6c674f3a/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:15:36,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5243dbc6-8a4f-4318-859f-fb5d6c674f3a/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:15:36,404 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-19 04:15:36,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:15:36,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:15:36,555 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:15:36,558 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:15:36,740 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:15:36,809 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:15:36,810 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:15:36,814 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:15:36 BoogieIcfgContainer [2023-11-19 04:15:36,815 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:15:36,818 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:15:36,818 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:15:36,821 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:15:36,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:15:35" (1/3) ... [2023-11-19 04:15:36,822 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ea962fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:15:36, skipping insertion in model container [2023-11-19 04:15:36,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:36" (2/3) ... [2023-11-19 04:15:36,822 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ea962fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:15:36, skipping insertion in model container [2023-11-19 04:15:36,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:15:36" (3/3) ... [2023-11-19 04:15:36,824 INFO L112 eAbstractionObserver]: Analyzing ICFG display-bit1.i [2023-11-19 04:15:36,846 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:15:36,847 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-19 04:15:36,918 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:15:36,926 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@15ff2c58, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:15:36,927 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-19 04:15:36,931 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 5 states have (on average 1.8) 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) [2023-11-19 04:15:36,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-19 04:15:36,938 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:36,940 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-19 04:15:36,940 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-19 04:15:36,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:36,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1987, now seen corresponding path program 1 times [2023-11-19 04:15:36,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:36,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673302270] [2023-11-19 04:15:36,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:36,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:15:37,059 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:15:37,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:15:37,083 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 04:15:37,086 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 04:15:37,087 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 3 remaining) [2023-11-19 04:15:37,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 3 remaining) [2023-11-19 04:15:37,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 3 remaining) [2023-11-19 04:15:37,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:15:37,096 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 04:15:37,102 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:15:37,117 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:15:37 BoogieIcfgContainer [2023-11-19 04:15:37,118 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:15:37,118 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:15:37,118 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:15:37,119 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:15:37,119 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:15:36" (3/4) ... [2023-11-19 04:15:37,121 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-19 04:15:37,155 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5243dbc6-8a4f-4318-859f-fb5d6c674f3a/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 04:15:37,155 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:15:37,156 INFO L158 Benchmark]: Toolchain (without parser) took 1360.59ms. Allocated memory is still 134.2MB. Free memory was 99.3MB in the beginning and 80.1MB in the end (delta: 19.2MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. [2023-11-19 04:15:37,157 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 111.1MB. Free memory is still 83.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:15:37,158 INFO L158 Benchmark]: CACSL2BoogieTranslator took 396.41ms. Allocated memory is still 134.2MB. Free memory was 98.8MB in the beginning and 85.6MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 04:15:37,158 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.16ms. Allocated memory is still 134.2MB. Free memory was 85.1MB in the beginning and 83.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:15:37,159 INFO L158 Benchmark]: Boogie Preprocessor took 19.57ms. Allocated memory is still 134.2MB. Free memory was 83.9MB in the beginning and 82.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:15:37,160 INFO L158 Benchmark]: RCFGBuilder took 558.29ms. Allocated memory is still 134.2MB. Free memory was 82.5MB in the beginning and 94.8MB in the end (delta: -12.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:15:37,160 INFO L158 Benchmark]: TraceAbstraction took 300.10ms. Allocated memory is still 134.2MB. Free memory was 94.1MB in the beginning and 82.2MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 04:15:37,161 INFO L158 Benchmark]: Witness Printer took 37.10ms. Allocated memory is still 134.2MB. Free memory was 82.2MB in the beginning and 80.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:15:37,165 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 111.1MB. Free memory is still 83.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 396.41ms. Allocated memory is still 134.2MB. Free memory was 98.8MB in the beginning and 85.6MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.16ms. Allocated memory is still 134.2MB. Free memory was 85.1MB in the beginning and 83.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.57ms. Allocated memory is still 134.2MB. Free memory was 83.9MB in the beginning and 82.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 558.29ms. Allocated memory is still 134.2MB. Free memory was 82.5MB in the beginning and 94.8MB in the end (delta: -12.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * TraceAbstraction took 300.10ms. Allocated memory is still 134.2MB. Free memory was 94.1MB in the beginning and 82.2MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 37.10ms. Allocated memory is still 134.2MB. Free memory was 82.2MB in the beginning and 80.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 276]: integer overflow possible integer overflow possible We found a FailurePath: [L270] unsigned int number1= 65535; [L271] int mask = 1; [L272] unsigned int x; [L273] int c = 1; [L274] int y; [L276] 1<<31 VAL [c=1, mask=1, number1=65535, x=0, y=0] - UnprovableResult [Line: 283]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 283]: 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, 9 locations, 3 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=9occurred 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, 2 NumberOfCodeBlocks, 2 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! [2023-11-19 04:15:37,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5243dbc6-8a4f-4318-859f-fb5d6c674f3a/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)