./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Mysore-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e85380-77dc-4efe-a5f9-081f6eb1db1b/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e85380-77dc-4efe-a5f9-081f6eb1db1b/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e85380-77dc-4efe-a5f9-081f6eb1db1b/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e85380-77dc-4efe-a5f9-081f6eb1db1b/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Mysore-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e85380-77dc-4efe-a5f9-081f6eb1db1b/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e85380-77dc-4efe-a5f9-081f6eb1db1b/bin/utaipan-verify-SwPr7d2a91 --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 638781bd69a51ef751cb454a3c2ea01d5ddfa7e74d0b5b05ad4d93f1e02b3c42 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:02:28,989 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:02:29,072 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e85380-77dc-4efe-a5f9-081f6eb1db1b/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-25 00:02:29,087 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:02:29,088 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:02:29,135 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:02:29,136 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:02:29,136 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:02:29,138 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:02:29,143 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:02:29,143 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:02:29,144 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:02:29,144 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:02:29,146 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:02:29,146 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:02:29,147 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:02:29,147 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:02:29,148 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:02:29,148 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:02:29,149 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:02:29,150 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:02:29,151 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:02:29,152 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:02:29,153 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:02:29,153 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:02:29,154 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:02:29,154 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:02:29,155 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:02:29,155 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:02:29,155 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-25 00:02:29,157 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-25 00:02:29,157 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:02:29,157 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:02:29,158 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:02:29,158 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:02:29,158 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:02:29,158 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:02:29,159 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:02:29,159 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:02:29,159 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:02:29,159 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:02:29,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:02:29,160 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:02:29,160 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:02:29,161 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:02:29,161 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:02:29,161 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_c8e85380-77dc-4efe-a5f9-081f6eb1db1b/bin/utaipan-verify-SwPr7d2a91/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e85380-77dc-4efe-a5f9-081f6eb1db1b/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 638781bd69a51ef751cb454a3c2ea01d5ddfa7e74d0b5b05ad4d93f1e02b3c42 [2023-11-25 00:02:29,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:02:29,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:02:29,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:02:29,487 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:02:29,488 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:02:29,489 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e85380-77dc-4efe-a5f9-081f6eb1db1b/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/termination-crafted/Mysore-1.c [2023-11-25 00:02:32,751 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:02:33,000 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:02:33,001 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e85380-77dc-4efe-a5f9-081f6eb1db1b/sv-benchmarks/c/termination-crafted/Mysore-1.c [2023-11-25 00:02:33,008 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e85380-77dc-4efe-a5f9-081f6eb1db1b/bin/utaipan-verify-SwPr7d2a91/data/c9cc9e85c/b93d9f76ab854a6dbf5dfa649d419386/FLAGef3dde4e6 [2023-11-25 00:02:33,026 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e85380-77dc-4efe-a5f9-081f6eb1db1b/bin/utaipan-verify-SwPr7d2a91/data/c9cc9e85c/b93d9f76ab854a6dbf5dfa649d419386 [2023-11-25 00:02:33,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:02:33,033 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:02:33,037 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:02:33,037 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:02:33,043 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:02:33,043 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:02:33" (1/1) ... [2023-11-25 00:02:33,045 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@421f7f41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:33, skipping insertion in model container [2023-11-25 00:02:33,045 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:02:33" (1/1) ... [2023-11-25 00:02:33,068 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:02:33,270 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:02:33,276 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:02:33,288 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:02:33,304 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:02:33,304 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:33 WrapperNode [2023-11-25 00:02:33,305 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:02:33,306 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:02:33,306 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:02:33,306 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:02:33,315 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:33" (1/1) ... [2023-11-25 00:02:33,320 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:33" (1/1) ... [2023-11-25 00:02:33,342 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2023-11-25 00:02:33,343 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:02:33,344 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:02:33,344 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:02:33,345 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:02:33,354 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:33" (1/1) ... [2023-11-25 00:02:33,355 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:33" (1/1) ... [2023-11-25 00:02:33,356 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:33" (1/1) ... [2023-11-25 00:02:33,356 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:33" (1/1) ... [2023-11-25 00:02:33,359 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:33" (1/1) ... [2023-11-25 00:02:33,363 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:33" (1/1) ... [2023-11-25 00:02:33,367 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:33" (1/1) ... [2023-11-25 00:02:33,368 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:33" (1/1) ... [2023-11-25 00:02:33,369 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:02:33,371 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:02:33,372 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:02:33,372 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:02:33,373 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:33" (1/1) ... [2023-11-25 00:02:33,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:02:33,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e85380-77dc-4efe-a5f9-081f6eb1db1b/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:02:33,410 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e85380-77dc-4efe-a5f9-081f6eb1db1b/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:02:33,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e85380-77dc-4efe-a5f9-081f6eb1db1b/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:02:33,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:02:33,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:02:33,553 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:02:33,555 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:02:33,722 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:02:33,747 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:02:33,747 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-25 00:02:33,749 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:02:33 BoogieIcfgContainer [2023-11-25 00:02:33,749 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:02:33,752 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:02:33,752 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:02:33,756 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:02:33,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:02:33" (1/3) ... [2023-11-25 00:02:33,757 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f92df01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:02:33, skipping insertion in model container [2023-11-25 00:02:33,757 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:33" (2/3) ... [2023-11-25 00:02:33,757 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f92df01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:02:33, skipping insertion in model container [2023-11-25 00:02:33,758 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:02:33" (3/3) ... [2023-11-25 00:02:33,759 INFO L112 eAbstractionObserver]: Analyzing ICFG Mysore-1.c [2023-11-25 00:02:33,780 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:02:33,780 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-25 00:02:33,829 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:02:33,838 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;@41039649, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:02:33,839 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-25 00:02:33,843 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 10 states have (on average 1.9) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:02:33,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-25 00:02:33,850 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:33,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-25 00:02:33,851 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-25 00:02:33,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:33,860 INFO L85 PathProgramCache]: Analyzing trace with hash 66474, now seen corresponding path program 1 times [2023-11-25 00:02:33,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:33,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794017143] [2023-11-25 00:02:33,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:33,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:02:34,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:02:34,069 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:02:34,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794017143] [2023-11-25 00:02:34,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794017143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:02:34,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:02:34,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:02:34,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834409894] [2023-11-25 00:02:34,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:02:34,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:02:34,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:02:34,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:02:34,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:02:34,112 INFO L87 Difference]: Start difference. First operand has 17 states, 10 states have (on average 1.9) internal successors, (19), 16 states have internal predecessors, (19), 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, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:02:34,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:02:34,274 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2023-11-25 00:02:34,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-25 00:02:34,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2023-11-25 00:02:34,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:02:34,284 INFO L225 Difference]: With dead ends: 28 [2023-11-25 00:02:34,285 INFO L226 Difference]: Without dead ends: 21 [2023-11-25 00:02:34,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:02:34,292 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 20 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:02:34,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 11 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:02:34,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-11-25 00:02:34,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2023-11-25 00:02:34,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.6) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:02:34,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2023-11-25 00:02:34,339 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 3 [2023-11-25 00:02:34,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:02:34,340 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2023-11-25 00:02:34,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:02:34,340 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2023-11-25 00:02:34,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-25 00:02:34,341 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:34,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-25 00:02:34,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-25 00:02:34,342 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-25 00:02:34,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:34,343 INFO L85 PathProgramCache]: Analyzing trace with hash 2060737, now seen corresponding path program 1 times [2023-11-25 00:02:34,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:34,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44443697] [2023-11-25 00:02:34,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:34,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:34,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-25 00:02:34,353 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-25 00:02:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-25 00:02:34,374 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-25 00:02:34,374 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-25 00:02:34,376 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2023-11-25 00:02:34,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2023-11-25 00:02:34,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2023-11-25 00:02:34,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2023-11-25 00:02:34,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2023-11-25 00:02:34,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2023-11-25 00:02:34,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-25 00:02:34,384 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-25 00:02:34,388 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-25 00:02:34,404 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 12:02:34 BoogieIcfgContainer [2023-11-25 00:02:34,404 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-25 00:02:34,405 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-25 00:02:34,405 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-25 00:02:34,405 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-25 00:02:34,406 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:02:33" (3/4) ... [2023-11-25 00:02:34,407 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-25 00:02:34,441 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e85380-77dc-4efe-a5f9-081f6eb1db1b/bin/utaipan-verify-SwPr7d2a91/witness.graphml [2023-11-25 00:02:34,441 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-25 00:02:34,442 INFO L158 Benchmark]: Toolchain (without parser) took 1408.44ms. Allocated memory was 130.0MB in the beginning and 172.0MB in the end (delta: 41.9MB). Free memory was 85.8MB in the beginning and 136.1MB in the end (delta: -50.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:02:34,442 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 130.0MB. Free memory is still 102.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:02:34,443 INFO L158 Benchmark]: CACSL2BoogieTranslator took 268.44ms. Allocated memory is still 130.0MB. Free memory was 85.8MB in the beginning and 76.2MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-25 00:02:34,444 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.99ms. Allocated memory is still 130.0MB. Free memory was 76.2MB in the beginning and 74.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-25 00:02:34,444 INFO L158 Benchmark]: Boogie Preprocessor took 25.65ms. Allocated memory is still 130.0MB. Free memory was 74.8MB in the beginning and 73.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:02:34,445 INFO L158 Benchmark]: RCFGBuilder took 378.35ms. Allocated memory is still 130.0MB. Free memory was 73.7MB in the beginning and 64.3MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-25 00:02:34,445 INFO L158 Benchmark]: TraceAbstraction took 652.65ms. Allocated memory was 130.0MB in the beginning and 172.0MB in the end (delta: 41.9MB). Free memory was 63.8MB in the beginning and 138.2MB in the end (delta: -74.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:02:34,446 INFO L158 Benchmark]: Witness Printer took 36.16ms. Allocated memory is still 172.0MB. Free memory was 138.2MB in the beginning and 136.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-25 00:02:34,448 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 130.0MB. Free memory is still 102.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 268.44ms. Allocated memory is still 130.0MB. Free memory was 85.8MB in the beginning and 76.2MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.99ms. Allocated memory is still 130.0MB. Free memory was 76.2MB in the beginning and 74.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.65ms. Allocated memory is still 130.0MB. Free memory was 74.8MB in the beginning and 73.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 378.35ms. Allocated memory is still 130.0MB. Free memory was 73.7MB in the beginning and 64.3MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 652.65ms. Allocated memory was 130.0MB in the beginning and 172.0MB in the end (delta: 41.9MB). Free memory was 63.8MB in the beginning and 138.2MB in the end (delta: -74.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 36.16ms. Allocated memory is still 172.0MB. Free memory was 138.2MB in the beginning and 136.1MB 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: 19]: integer overflow possible integer overflow possible We found a FailurePath: [L15] int c, x; [L16] x = __VERIFIER_nondet_int() [L17] c = __VERIFIER_nondet_int() [L18] COND TRUE c >= 2 VAL [c=2, x=2147483646] [L19] x + c VAL [c=2, x=2147483646] - 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: 20]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 20]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 21]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 21]: 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, 17 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35 IncrementalHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 7 mSDtfsCounter, 35 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 1 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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! [2023-11-25 00:02:34,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e85380-77dc-4efe-a5f9-081f6eb1db1b/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)