./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-lopstr16/break-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_11508877-4532-4f57-bc00-72617a458eca/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11508877-4532-4f57-bc00-72617a458eca/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_11508877-4532-4f57-bc00-72617a458eca/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11508877-4532-4f57-bc00-72617a458eca/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-lopstr16/break-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11508877-4532-4f57-bc00-72617a458eca/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11508877-4532-4f57-bc00-72617a458eca/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 32bit --witnessprinter.graph.data.programhash af12e42a5d3a022d66b7920ff01dec158b3de4df470747e943653bc7f1da2cc9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:08:10,095 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:08:10,240 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11508877-4532-4f57-bc00-72617a458eca/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 05:08:10,251 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:08:10,252 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:08:10,301 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:08:10,302 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:08:10,302 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:08:10,304 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:08:10,310 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:08:10,310 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:08:10,312 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:08:10,313 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:08:10,315 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:08:10,315 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:08:10,316 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:08:10,316 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:08:10,317 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:08:10,317 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:08:10,318 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:08:10,318 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:08:10,319 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:08:10,321 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:08:10,321 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:08:10,322 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:08:10,322 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:08:10,323 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:08:10,323 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:08:10,324 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:08:10,324 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:08:10,326 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:08:10,326 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:08:10,327 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:08:10,327 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:08:10,327 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:08:10,328 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:08:10,328 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:08:10,328 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:08:10,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:08:10,329 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:08:10,329 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:08:10,330 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:08:10,330 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:08:10,330 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:08:10,331 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:08:10,332 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:08:10,332 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:08:10,332 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_11508877-4532-4f57-bc00-72617a458eca/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11508877-4532-4f57-bc00-72617a458eca/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af12e42a5d3a022d66b7920ff01dec158b3de4df470747e943653bc7f1da2cc9 [2023-11-19 05:08:10,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:08:10,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:08:10,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:08:10,787 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:08:10,788 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:08:10,792 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11508877-4532-4f57-bc00-72617a458eca/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/array-lopstr16/break-2.i [2023-11-19 05:08:14,256 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:08:14,570 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:08:14,571 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11508877-4532-4f57-bc00-72617a458eca/sv-benchmarks/c/array-lopstr16/break-2.i [2023-11-19 05:08:14,586 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11508877-4532-4f57-bc00-72617a458eca/bin/utaipan-verify-t7M7D8N6sZ/data/6fd5c4708/fea7191c973142e8ad360d657f5b5e57/FLAGb73163dfc [2023-11-19 05:08:14,607 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11508877-4532-4f57-bc00-72617a458eca/bin/utaipan-verify-t7M7D8N6sZ/data/6fd5c4708/fea7191c973142e8ad360d657f5b5e57 [2023-11-19 05:08:14,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:08:14,619 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:08:14,621 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:08:14,621 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:08:14,628 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:08:14,629 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:08:14" (1/1) ... [2023-11-19 05:08:14,630 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29969ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:14, skipping insertion in model container [2023-11-19 05:08:14,630 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:08:14" (1/1) ... [2023-11-19 05:08:14,662 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:08:14,927 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:08:24,276 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:08:24,299 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:08:24,321 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:08:24,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:24 WrapperNode [2023-11-19 05:08:24,322 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:08:24,324 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:08:24,324 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:08:24,324 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:08:24,334 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:24" (1/1) ... [2023-11-19 05:08:24,344 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:24" (1/1) ... [2023-11-19 05:08:24,368 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 49 [2023-11-19 05:08:24,370 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:08:24,371 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:08:24,371 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:08:24,371 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:08:24,384 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:24" (1/1) ... [2023-11-19 05:08:24,384 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:24" (1/1) ... [2023-11-19 05:08:24,391 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:24" (1/1) ... [2023-11-19 05:08:24,391 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:24" (1/1) ... [2023-11-19 05:08:24,399 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:24" (1/1) ... [2023-11-19 05:08:24,411 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:24" (1/1) ... [2023-11-19 05:08:24,413 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:24" (1/1) ... [2023-11-19 05:08:24,414 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:24" (1/1) ... [2023-11-19 05:08:24,416 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:08:24,418 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:08:24,418 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:08:24,418 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:08:24,419 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:24" (1/1) ... [2023-11-19 05:08:24,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:08:24,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11508877-4532-4f57-bc00-72617a458eca/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:08:24,459 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11508877-4532-4f57-bc00-72617a458eca/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:08:24,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11508877-4532-4f57-bc00-72617a458eca/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:08:24,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:08:24,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:08:24,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:08:24,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:08:24,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:08:24,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:08:24,610 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:08:24,616 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:08:24,830 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:08:24,926 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:08:24,927 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 05:08:24,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:08:24 BoogieIcfgContainer [2023-11-19 05:08:24,932 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:08:24,935 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:08:24,935 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:08:24,942 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:08:24,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:08:14" (1/3) ... [2023-11-19 05:08:24,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e2f2ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:08:24, skipping insertion in model container [2023-11-19 05:08:24,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:24" (2/3) ... [2023-11-19 05:08:24,946 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e2f2ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:08:24, skipping insertion in model container [2023-11-19 05:08:24,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:08:24" (3/3) ... [2023-11-19 05:08:24,948 INFO L112 eAbstractionObserver]: Analyzing ICFG break-2.i [2023-11-19 05:08:24,970 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:08:24,970 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-19 05:08:25,021 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:08:25,029 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;@6c5c1922, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:08:25,029 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-19 05:08:25,033 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 13 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) [2023-11-19 05:08:25,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 05:08:25,038 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:25,039 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 05:08:25,040 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 05:08:25,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:25,046 INFO L85 PathProgramCache]: Analyzing trace with hash 3020720, now seen corresponding path program 1 times [2023-11-19 05:08:25,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:25,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582726095] [2023-11-19 05:08:25,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:25,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:25,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:25,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:25,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:25,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582726095] [2023-11-19 05:08:25,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582726095] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:25,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:25,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:08:25,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820588089] [2023-11-19 05:08:25,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:25,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:08:25,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:25,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:08:25,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:08:25,439 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 13 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) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:25,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:25,577 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2023-11-19 05:08:25,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:08:25,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 05:08:25,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:25,588 INFO L225 Difference]: With dead ends: 32 [2023-11-19 05:08:25,588 INFO L226 Difference]: Without dead ends: 22 [2023-11-19 05:08:25,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:08:25,597 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 7 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:25,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 20 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:08:25,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-11-19 05:08:25,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 17. [2023-11-19 05:08:25,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.4615384615384615) 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) [2023-11-19 05:08:25,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2023-11-19 05:08:25,640 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 4 [2023-11-19 05:08:25,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:25,641 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2023-11-19 05:08:25,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:25,641 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2023-11-19 05:08:25,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 05:08:25,642 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:25,643 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2023-11-19 05:08:25,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:08:25,643 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 05:08:25,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:25,644 INFO L85 PathProgramCache]: Analyzing trace with hash -2028826319, now seen corresponding path program 1 times [2023-11-19 05:08:25,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:25,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554273960] [2023-11-19 05:08:25,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:25,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:25,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:25,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:25,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:25,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554273960] [2023-11-19 05:08:25,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554273960] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:08:25,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346042279] [2023-11-19 05:08:25,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:25,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:08:25,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11508877-4532-4f57-bc00-72617a458eca/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:08:25,812 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11508877-4532-4f57-bc00-72617a458eca/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:08:25,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11508877-4532-4f57-bc00-72617a458eca/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:08:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:25,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:08:25,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:08:25,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:25,955 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:08:25,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346042279] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:25,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:08:25,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-19 05:08:25,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849699622] [2023-11-19 05:08:25,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:25,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:08:25,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:25,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:08:25,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 05:08:25,960 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:26,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:26,042 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2023-11-19 05:08:26,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:08:26,043 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 05:08:26,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:26,044 INFO L225 Difference]: With dead ends: 22 [2023-11-19 05:08:26,044 INFO L226 Difference]: Without dead ends: 21 [2023-11-19 05:08:26,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-19 05:08:26,046 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 13 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:26,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 21 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:08:26,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-11-19 05:08:26,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2023-11-19 05:08:26,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:26,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2023-11-19 05:08:26,053 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 8 [2023-11-19 05:08:26,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:26,053 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2023-11-19 05:08:26,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:26,054 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2023-11-19 05:08:26,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:08:26,055 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:26,055 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:26,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11508877-4532-4f57-bc00-72617a458eca/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:08:26,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11508877-4532-4f57-bc00-72617a458eca/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:08:26,271 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 05:08:26,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:26,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1532728281, now seen corresponding path program 1 times [2023-11-19 05:08:26,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:26,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126640370] [2023-11-19 05:08:26,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:26,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:26,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:26,359 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:26,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126640370] [2023-11-19 05:08:26,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126640370] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:08:26,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244431649] [2023-11-19 05:08:26,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:26,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:08:26,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11508877-4532-4f57-bc00-72617a458eca/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:08:26,362 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11508877-4532-4f57-bc00-72617a458eca/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:08:26,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11508877-4532-4f57-bc00-72617a458eca/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:08:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:26,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:08:26,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:08:26,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:26,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:08:26,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:26,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244431649] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:08:26,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [103597415] [2023-11-19 05:08:26,538 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-19 05:08:26,539 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:08:26,542 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:08:26,548 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:08:26,548 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:08:27,332 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:08:27,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [103597415] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:27,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:08:27,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4, 4] total 12 [2023-11-19 05:08:27,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695827157] [2023-11-19 05:08:27,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:27,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:08:27,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:27,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:08:27,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-11-19 05:08:27,512 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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 05:08:27,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:27,564 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2023-11-19 05:08:27,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:08:27,566 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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) Word has length 9 [2023-11-19 05:08:27,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:27,568 INFO L225 Difference]: With dead ends: 27 [2023-11-19 05:08:27,568 INFO L226 Difference]: Without dead ends: 20 [2023-11-19 05:08:27,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-11-19 05:08:27,573 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:27,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 14 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:08:27,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-11-19 05:08:27,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 13. [2023-11-19 05:08:27,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 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 05:08:27,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2023-11-19 05:08:27,585 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2023-11-19 05:08:27,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:27,585 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2023-11-19 05:08:27,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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 05:08:27,586 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2023-11-19 05:08:27,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 05:08:27,587 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:27,587 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:27,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11508877-4532-4f57-bc00-72617a458eca/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:08:27,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11508877-4532-4f57-bc00-72617a458eca/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:08:27,804 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 05:08:27,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:27,805 INFO L85 PathProgramCache]: Analyzing trace with hash 211341335, now seen corresponding path program 1 times [2023-11-19 05:08:27,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:27,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36399876] [2023-11-19 05:08:27,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:27,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:27,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:27,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:27,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36399876] [2023-11-19 05:08:27,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36399876] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:08:27,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313003019] [2023-11-19 05:08:27,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:27,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:08:27,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11508877-4532-4f57-bc00-72617a458eca/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:08:27,939 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11508877-4532-4f57-bc00-72617a458eca/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:08:27,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11508877-4532-4f57-bc00-72617a458eca/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 05:08:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:28,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:08:28,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:08:28,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:28,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:08:28,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:28,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313003019] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:08:28,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1821687476] [2023-11-19 05:08:28,088 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-19 05:08:28,088 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:08:28,088 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:08:28,089 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:08:28,089 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:08:28,747 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:08:28,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1821687476] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:28,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:08:28,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 4, 4] total 15 [2023-11-19 05:08:28,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361973363] [2023-11-19 05:08:28,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:28,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 05:08:28,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:28,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 05:08:28,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2023-11-19 05:08:28,996 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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 05:08:29,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:29,121 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2023-11-19 05:08:29,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 05:08:29,124 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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) Word has length 10 [2023-11-19 05:08:29,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:29,125 INFO L225 Difference]: With dead ends: 25 [2023-11-19 05:08:29,125 INFO L226 Difference]: Without dead ends: 23 [2023-11-19 05:08:29,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2023-11-19 05:08:29,126 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 14 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:29,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 13 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:08:29,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-19 05:08:29,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 16. [2023-11-19 05:08:29,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:29,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2023-11-19 05:08:29,132 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 10 [2023-11-19 05:08:29,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:29,132 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2023-11-19 05:08:29,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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 05:08:29,132 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2023-11-19 05:08:29,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 05:08:29,133 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:29,133 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:29,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11508877-4532-4f57-bc00-72617a458eca/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:08:29,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11508877-4532-4f57-bc00-72617a458eca/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:08:29,336 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 05:08:29,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:29,337 INFO L85 PathProgramCache]: Analyzing trace with hash -352254839, now seen corresponding path program 1 times [2023-11-19 05:08:29,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:29,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792087222] [2023-11-19 05:08:29,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:29,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:29,468 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:08:29,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:29,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792087222] [2023-11-19 05:08:29,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792087222] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:08:29,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506563263] [2023-11-19 05:08:29,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:29,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:08:29,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11508877-4532-4f57-bc00-72617a458eca/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:08:29,472 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11508877-4532-4f57-bc00-72617a458eca/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:08:29,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11508877-4532-4f57-bc00-72617a458eca/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 05:08:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:29,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:08:29,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:08:29,571 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:08:29,572 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:08:29,614 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:08:29,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506563263] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:08:29,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1607258902] [2023-11-19 05:08:29,621 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-19 05:08:29,621 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:08:29,622 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:08:29,623 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:08:29,623 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:08:30,042 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:08:30,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1607258902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:30,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:08:30,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 4, 4] total 14 [2023-11-19 05:08:30,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168852313] [2023-11-19 05:08:30,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:30,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 05:08:30,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:30,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 05:08:30,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-11-19 05:08:30,245 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:30,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:30,341 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2023-11-19 05:08:30,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 05:08:30,341 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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) Word has length 13 [2023-11-19 05:08:30,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:30,342 INFO L225 Difference]: With dead ends: 16 [2023-11-19 05:08:30,342 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 05:08:30,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-11-19 05:08:30,343 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:30,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:08:30,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 05:08:30,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 05:08:30,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:30,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 05:08:30,345 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2023-11-19 05:08:30,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:30,346 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 05:08:30,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:30,346 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 05:08:30,346 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 05:08:30,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-11-19 05:08:30,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-11-19 05:08:30,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2023-11-19 05:08:30,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2023-11-19 05:08:30,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11508877-4532-4f57-bc00-72617a458eca/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-19 05:08:30,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11508877-4532-4f57-bc00-72617a458eca/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:08:30,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 05:08:30,627 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2023-11-19 05:08:30,627 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2023-11-19 05:08:30,627 INFO L899 garLoopResultBuilder]: For program point L28-3(line 28) no Hoare annotation was computed. [2023-11-19 05:08:30,627 INFO L899 garLoopResultBuilder]: For program point L24(lines 24 25) no Hoare annotation was computed. [2023-11-19 05:08:30,627 INFO L899 garLoopResultBuilder]: For program point L28-4(line 28) no Hoare annotation was computed. [2023-11-19 05:08:30,628 INFO L895 garLoopResultBuilder]: At program point L28-5(lines 28 32) the Hoare annotation is: (and (<= 1 |#StackHeapBarrier|) (= |~#s~0.base| 3) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |~#s~0.offset| 0)) [2023-11-19 05:08:30,628 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2023-11-19 05:08:30,628 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 05:08:30,628 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 05:08:30,628 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2023-11-19 05:08:30,629 INFO L899 garLoopResultBuilder]: For program point L22-3(line 22) no Hoare annotation was computed. [2023-11-19 05:08:30,629 INFO L899 garLoopResultBuilder]: For program point L22-4(line 22) no Hoare annotation was computed. [2023-11-19 05:08:30,629 INFO L895 garLoopResultBuilder]: At program point L22-5(lines 22 27) the Hoare annotation is: (let ((.cse0 (<= 1 |#StackHeapBarrier|)) (.cse1 (= |~#s~0.base| 3)) (.cse2 (= |~#s~0.offset| 0))) (or (and .cse0 .cse1 (<= 1 |ULTIMATE.start_main_~i~0#1|) .cse2 (<= |ULTIMATE.start_main_~i~0#1| 500001)) (and .cse0 (= |ULTIMATE.start_main_~i~0#1| 0) .cse1 .cse2))) [2023-11-19 05:08:30,629 INFO L899 garLoopResultBuilder]: For program point L22-6(lines 22 27) no Hoare annotation was computed. [2023-11-19 05:08:30,632 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-19 05:08:30,635 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:08:30,647 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:08:30 BoogieIcfgContainer [2023-11-19 05:08:30,647 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:08:30,648 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:08:30,648 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:08:30,648 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:08:30,648 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:08:24" (3/4) ... [2023-11-19 05:08:30,650 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 05:08:30,657 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-11-19 05:08:30,658 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-19 05:08:30,658 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 05:08:30,658 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 05:08:30,747 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11508877-4532-4f57-bc00-72617a458eca/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 05:08:30,747 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11508877-4532-4f57-bc00-72617a458eca/bin/utaipan-verify-t7M7D8N6sZ/witness.yml [2023-11-19 05:08:30,748 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:08:30,748 INFO L158 Benchmark]: Toolchain (without parser) took 16129.58ms. Allocated memory was 142.6MB in the beginning and 10.8GB in the end (delta: 10.6GB). Free memory was 111.4MB in the beginning and 9.1GB in the end (delta: -8.9GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2023-11-19 05:08:30,749 INFO L158 Benchmark]: CDTParser took 2.69ms. Allocated memory is still 107.0MB. Free memory is still 62.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:08:30,749 INFO L158 Benchmark]: CACSL2BoogieTranslator took 9702.33ms. Allocated memory was 142.6MB in the beginning and 10.8GB in the end (delta: 10.6GB). Free memory was 111.4MB in the beginning and 9.2GB in the end (delta: -9.1GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. [2023-11-19 05:08:30,750 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.20ms. Allocated memory is still 10.8GB. Free memory was 9.2GB in the beginning and 9.2GB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:08:30,751 INFO L158 Benchmark]: Boogie Preprocessor took 45.95ms. Allocated memory is still 10.8GB. Free memory was 9.2GB in the beginning and 9.2GB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:08:30,751 INFO L158 Benchmark]: RCFGBuilder took 514.37ms. Allocated memory is still 10.8GB. Free memory was 9.2GB in the beginning and 9.2GB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 05:08:30,751 INFO L158 Benchmark]: TraceAbstraction took 5712.37ms. Allocated memory is still 10.8GB. Free memory was 9.2GB in the beginning and 9.1GB in the end (delta: 107.0MB). Peak memory consumption was 111.1MB. Max. memory is 16.1GB. [2023-11-19 05:08:30,752 INFO L158 Benchmark]: Witness Printer took 100.21ms. Allocated memory is still 10.8GB. Free memory was 9.1GB in the beginning and 9.1GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 05:08:30,754 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.69ms. Allocated memory is still 107.0MB. Free memory is still 62.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 9702.33ms. Allocated memory was 142.6MB in the beginning and 10.8GB in the end (delta: 10.6GB). Free memory was 111.4MB in the beginning and 9.2GB in the end (delta: -9.1GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.20ms. Allocated memory is still 10.8GB. Free memory was 9.2GB in the beginning and 9.2GB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 45.95ms. Allocated memory is still 10.8GB. Free memory was 9.2GB in the beginning and 9.2GB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 514.37ms. Allocated memory is still 10.8GB. Free memory was 9.2GB in the beginning and 9.2GB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 5712.37ms. Allocated memory is still 10.8GB. Free memory was 9.2GB in the beginning and 9.1GB in the end (delta: 107.0MB). Peak memory consumption was 111.1MB. Max. memory is 16.1GB. * Witness Printer took 100.21ms. Allocated memory is still 10.8GB. Free memory was 9.1GB in the beginning and 9.1GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 5.6s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 44 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 44 mSDsluCounter, 69 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 47 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 168 IncrementalHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 22 mSDtfsCounter, 168 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 122 GetRequests, 64 SyntacticMatches, 5 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=1, InterpolantAutomatonStates: 30, 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, 5 MinimizatonAttempts, 24 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 43 HoareAnnotationTreeSize, 2 FomulaSimplifications, 15 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 14 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 240 SizeOfPredicates, 5 NumberOfNonLiveVariables, 207 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 12 InterpolantComputations, 2 PerfectInterpolantSequences, 9/27 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: OVERALL_TIME: 1.9s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 3, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 23, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 70, TOOLS_POST_TIME: 1.3s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 70, TOOLS_QUANTIFIERELIM_TIME: 1.3s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 125, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 4, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 8, DOMAIN_WIDEN_TIME: 0.4s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 12, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 23, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 4, LOOP_SUMMARIZER_CACHE_MISSES: 4, LOOP_SUMMARIZER_OVERALL_TIME: 1.5s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 1.5s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 12, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 228, DAG_COMPRESSION_RETAINED_NODES: 91, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (((1 <= i) && (i <= 500001)) || (i == 0)) - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (0 <= i) RESULT: Ultimate proved your program to be correct! [2023-11-19 05:08:30,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11508877-4532-4f57-bc00-72617a458eca/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 Result: TRUE