./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire --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 f79e4118373e847e0fb27fcdde0c282d507ddb96f3173b4556e1de9cae44280f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:20:15,155 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:20:15,233 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-23 21:20:15,239 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:20:15,240 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:20:15,269 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:20:15,270 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:20:15,271 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:20:15,272 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:20:15,272 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:20:15,273 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:20:15,274 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:20:15,274 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:20:15,275 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:20:15,275 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:20:15,276 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:20:15,277 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:20:15,277 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:20:15,278 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:20:15,278 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:20:15,279 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:20:15,280 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:20:15,281 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:20:15,281 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:20:15,282 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:20:15,283 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:20:15,283 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:20:15,284 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:20:15,284 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:20:15,285 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 21:20:15,285 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:20:15,286 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:20:15,287 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:20:15,287 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:20:15,288 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:20:15,288 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:20:15,289 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:20:15,289 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:20:15,290 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:20:15,290 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:20:15,291 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:20:15,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:20:15,292 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:20:15,292 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:20:15,292 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:20:15,293 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:20:15,293 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_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f79e4118373e847e0fb27fcdde0c282d507ddb96f3173b4556e1de9cae44280f [2023-11-23 21:20:15,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:20:15,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:20:15,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:20:15,585 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:20:15,586 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:20:15,587 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-1.c [2023-11-23 21:20:18,839 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:20:19,129 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:20:19,129 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-1.c [2023-11-23 21:20:19,137 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/data/472bb2945/cd5ab6e3109f4592837651062cf6ca73/FLAGa1ffd71ea [2023-11-23 21:20:19,156 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/data/472bb2945/cd5ab6e3109f4592837651062cf6ca73 [2023-11-23 21:20:19,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:20:19,166 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:20:19,171 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:20:19,171 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:20:19,176 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:20:19,180 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:20:19" (1/1) ... [2023-11-23 21:20:19,181 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73321a3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:19, skipping insertion in model container [2023-11-23 21:20:19,182 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:20:19" (1/1) ... [2023-11-23 21:20:19,209 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:20:19,403 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:20:19,409 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:20:19,421 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:20:19,435 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:20:19,435 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:19 WrapperNode [2023-11-23 21:20:19,435 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:20:19,436 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:20:19,436 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:20:19,437 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:20:19,444 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:19" (1/1) ... [2023-11-23 21:20:19,449 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:19" (1/1) ... [2023-11-23 21:20:19,468 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 32 [2023-11-23 21:20:19,469 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:20:19,470 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:20:19,470 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:20:19,470 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:20:19,480 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:19" (1/1) ... [2023-11-23 21:20:19,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:19" (1/1) ... [2023-11-23 21:20:19,481 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:19" (1/1) ... [2023-11-23 21:20:19,481 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:19" (1/1) ... [2023-11-23 21:20:19,483 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:19" (1/1) ... [2023-11-23 21:20:19,487 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:19" (1/1) ... [2023-11-23 21:20:19,487 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:19" (1/1) ... [2023-11-23 21:20:19,488 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:19" (1/1) ... [2023-11-23 21:20:19,490 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:20:19,490 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:20:19,491 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:20:19,491 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:20:19,492 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:19" (1/1) ... [2023-11-23 21:20:19,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:20:19,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:19,526 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:20:19,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:20:19,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:20:19,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:20:19,661 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:20:19,664 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:20:19,819 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:20:19,859 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:20:19,862 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:20:19,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:20:19 BoogieIcfgContainer [2023-11-23 21:20:19,864 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:20:19,872 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:20:19,872 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:20:19,876 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:20:19,877 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:20:19" (1/3) ... [2023-11-23 21:20:19,879 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@133921a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:20:19, skipping insertion in model container [2023-11-23 21:20:19,879 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:19" (2/3) ... [2023-11-23 21:20:19,880 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@133921a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:20:19, skipping insertion in model container [2023-11-23 21:20:19,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:20:19" (3/3) ... [2023-11-23 21:20:19,882 INFO L112 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-random1d-1.c [2023-11-23 21:20:19,908 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:20:19,908 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-23 21:20:19,979 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:20:19,987 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;@44720a88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:20:19,988 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-23 21:20:19,994 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 states have internal predecessors, (20), 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) [2023-11-23 21:20:20,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-23 21:20:20,000 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:20,001 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 21:20:20,002 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)] === [2023-11-23 21:20:20,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:20,007 INFO L85 PathProgramCache]: Analyzing trace with hash 69427029, now seen corresponding path program 1 times [2023-11-23 21:20:20,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:20,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209241090] [2023-11-23 21:20:20,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:20,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:20,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:20,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:20,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209241090] [2023-11-23 21:20:20,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209241090] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:20,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:20:20,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:20:20,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889530612] [2023-11-23 21:20:20,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:20,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:20:20,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:20,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:20:20,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:20,265 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 states have internal predecessors, (20), 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 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:20:20,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:20,331 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2023-11-23 21:20:20,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:20:20,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-23 21:20:20,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:20,342 INFO L225 Difference]: With dead ends: 31 [2023-11-23 21:20:20,342 INFO L226 Difference]: Without dead ends: 26 [2023-11-23 21:20:20,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:20,349 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:20,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 19 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:20:20,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-23 21:20:20,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2023-11-23 21:20:20,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 22 states have internal predecessors, (28), 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) [2023-11-23 21:20:20,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2023-11-23 21:20:20,404 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 5 [2023-11-23 21:20:20,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:20,405 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2023-11-23 21:20:20,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:20:20,405 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2023-11-23 21:20:20,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 21:20:20,406 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:20,406 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-23 21:20:20,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:20:20,407 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)] === [2023-11-23 21:20:20,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:20,409 INFO L85 PathProgramCache]: Analyzing trace with hash -2142729346, now seen corresponding path program 1 times [2023-11-23 21:20:20,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:20,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668730552] [2023-11-23 21:20:20,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:20,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:20,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:20,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:20,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668730552] [2023-11-23 21:20:20,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668730552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:20,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:20:20,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:20:20,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777209628] [2023-11-23 21:20:20,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:20,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:20:20,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:20,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:20:20,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:20,518 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-11-23 21:20:20,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:20,562 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2023-11-23 21:20:20,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:20:20,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2023-11-23 21:20:20,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:20,564 INFO L225 Difference]: With dead ends: 40 [2023-11-23 21:20:20,565 INFO L226 Difference]: Without dead ends: 38 [2023-11-23 21:20:20,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:20,567 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:20,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 21 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:20:20,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-23 21:20:20,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2023-11-23 21:20:20,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 35 states have internal predecessors, (47), 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) [2023-11-23 21:20:20,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2023-11-23 21:20:20,576 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 6 [2023-11-23 21:20:20,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:20,577 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2023-11-23 21:20:20,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-11-23 21:20:20,577 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2023-11-23 21:20:20,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 21:20:20,578 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:20,578 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:20:20,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:20:20,579 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-23 21:20:20,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:20,580 INFO L85 PathProgramCache]: Analyzing trace with hash -2000100226, now seen corresponding path program 1 times [2023-11-23 21:20:20,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:20,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324667199] [2023-11-23 21:20:20,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:20,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:20,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:20,635 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:20,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324667199] [2023-11-23 21:20:20,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324667199] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:20,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:20:20,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:20:20,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340244105] [2023-11-23 21:20:20,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:20,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:20:20,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:20,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:20:20,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:20,638 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-11-23 21:20:20,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:20,653 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2023-11-23 21:20:20,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:20:20,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2023-11-23 21:20:20,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:20,670 INFO L225 Difference]: With dead ends: 36 [2023-11-23 21:20:20,670 INFO L226 Difference]: Without dead ends: 35 [2023-11-23 21:20:20,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:20,672 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:20,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 11 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:20:20,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-11-23 21:20:20,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-11-23 21:20:20,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 34 states have internal predecessors, (44), 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) [2023-11-23 21:20:20,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2023-11-23 21:20:20,682 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 7 [2023-11-23 21:20:20,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:20,682 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2023-11-23 21:20:20,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-11-23 21:20:20,683 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2023-11-23 21:20:20,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 21:20:20,684 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:20,684 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:20:20,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:20:20,685 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-23 21:20:20,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:20,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1873564800, now seen corresponding path program 1 times [2023-11-23 21:20:20,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:20,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567597447] [2023-11-23 21:20:20,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:20,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:20,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:20,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:20,727 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:20,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567597447] [2023-11-23 21:20:20,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567597447] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:20,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:20:20,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:20:20,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726174679] [2023-11-23 21:20:20,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:20,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:20:20,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:20,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:20:20,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:20,731 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2023-11-23 21:20:20,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:20,749 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2023-11-23 21:20:20,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:20:20,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 [2023-11-23 21:20:20,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:20,751 INFO L225 Difference]: With dead ends: 41 [2023-11-23 21:20:20,752 INFO L226 Difference]: Without dead ends: 40 [2023-11-23 21:20:20,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:20,754 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:20,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 22 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:20:20,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-23 21:20:20,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-11-23 21:20:20,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.4) internal successors, (49), 39 states have internal predecessors, (49), 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) [2023-11-23 21:20:20,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2023-11-23 21:20:20,764 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 8 [2023-11-23 21:20:20,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:20,765 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2023-11-23 21:20:20,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2023-11-23 21:20:20,766 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2023-11-23 21:20:20,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 21:20:20,766 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:20,767 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:20:20,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:20:20,767 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-23 21:20:20,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:20,768 INFO L85 PathProgramCache]: Analyzing trace with hash 799855624, now seen corresponding path program 1 times [2023-11-23 21:20:20,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:20,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255067284] [2023-11-23 21:20:20,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:20,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:20,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:20,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:20,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255067284] [2023-11-23 21:20:20,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255067284] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:20:20,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829419436] [2023-11-23 21:20:20,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:20,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:20,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:20,836 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:20:20,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:20:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:20,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:20:20,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:20:20,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:20,952 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:20:21,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:21,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829419436] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:20:21,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [175674539] [2023-11-23 21:20:21,023 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-23 21:20:21,024 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:20:21,028 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:20:21,034 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:20:21,035 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:20:21,355 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:20:21,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [175674539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:21,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:20:21,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3, 3, 3] total 12 [2023-11-23 21:20:21,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025559367] [2023-11-23 21:20:21,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:21,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:20:21,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:21,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:20:21,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-11-23 21:20:21,669 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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) [2023-11-23 21:20:22,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:22,151 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2023-11-23 21:20:22,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 21:20:22,152 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-23 21:20:22,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:22,153 INFO L225 Difference]: With dead ends: 66 [2023-11-23 21:20:22,153 INFO L226 Difference]: Without dead ends: 62 [2023-11-23 21:20:22,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2023-11-23 21:20:22,156 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 49 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:22,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 12 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:20:22,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-23 21:20:22,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 47. [2023-11-23 21:20:22,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 46 states have internal predecessors, (57), 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) [2023-11-23 21:20:22,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2023-11-23 21:20:22,169 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 11 [2023-11-23 21:20:22,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:22,170 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2023-11-23 21:20:22,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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) [2023-11-23 21:20:22,170 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2023-11-23 21:20:22,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 21:20:22,171 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:22,171 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:20:22,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:20:22,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:22,388 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-23 21:20:22,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:22,389 INFO L85 PathProgramCache]: Analyzing trace with hash 799855816, now seen corresponding path program 1 times [2023-11-23 21:20:22,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:22,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719836885] [2023-11-23 21:20:22,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:22,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:22,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:22,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:22,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:22,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719836885] [2023-11-23 21:20:22,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719836885] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:20:22,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183827665] [2023-11-23 21:20:22,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:22,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:22,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:22,472 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:20:22,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:20:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:22,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:20:22,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:20:22,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:22,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:20:22,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:22,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183827665] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:20:22,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1064433498] [2023-11-23 21:20:22,559 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-23 21:20:22,559 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:20:22,560 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:20:22,560 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:20:22,560 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:20:22,692 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:20:22,884 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '618#(and (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= (+ |ULTIMATE.start_main_~a~0#1| 2147483648) 0))' at error location [2023-11-23 21:20:22,885 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:20:22,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:20:22,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-23 21:20:22,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505998667] [2023-11-23 21:20:22,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:20:22,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:20:22,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:22,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:20:22,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-23 21:20:22,888 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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) [2023-11-23 21:20:22,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:22,961 INFO L93 Difference]: Finished difference Result 122 states and 162 transitions. [2023-11-23 21:20:22,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:20:22,962 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-23 21:20:22,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:22,965 INFO L225 Difference]: With dead ends: 122 [2023-11-23 21:20:22,965 INFO L226 Difference]: Without dead ends: 120 [2023-11-23 21:20:22,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-23 21:20:22,967 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 27 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:22,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 33 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:20:22,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-23 21:20:22,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 101. [2023-11-23 21:20:22,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 96 states have (on average 1.3645833333333333) internal successors, (131), 100 states have internal predecessors, (131), 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) [2023-11-23 21:20:22,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 131 transitions. [2023-11-23 21:20:22,985 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 131 transitions. Word has length 11 [2023-11-23 21:20:22,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:22,985 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 131 transitions. [2023-11-23 21:20:22,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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) [2023-11-23 21:20:22,986 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 131 transitions. [2023-11-23 21:20:22,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 21:20:22,986 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:22,987 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-23 21:20:23,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:20:23,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:23,213 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-23 21:20:23,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:23,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1616469403, now seen corresponding path program 1 times [2023-11-23 21:20:23,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:23,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005325326] [2023-11-23 21:20:23,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:23,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:23,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:23,269 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:23,269 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:23,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005325326] [2023-11-23 21:20:23,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005325326] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:20:23,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968843579] [2023-11-23 21:20:23,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:23,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:23,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:23,277 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:20:23,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:20:23,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:23,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:20:23,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:20:23,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:23,339 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:20:23,370 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:23,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968843579] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:20:23,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [151886816] [2023-11-23 21:20:23,375 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-23 21:20:23,375 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:20:23,375 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:20:23,375 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:20:23,376 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:20:23,747 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:20:24,242 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '947#(and (<= 2 |ULTIMATE.start_main_~x~0#1|) (exists ((|v_ULTIMATE.start_main_#t~nondet1#1_33| Int)) (and (not (= |v_ULTIMATE.start_main_#t~nondet1#1_33| 0)) (<= 0 (+ |v_ULTIMATE.start_main_#t~nondet1#1_33| 2147483648)) (<= |v_ULTIMATE.start_main_#t~nondet1#1_33| 2147483647))) (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~max~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 2147483647 |ULTIMATE.start_main_~a~0#1|))' at error location [2023-11-23 21:20:24,242 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:20:24,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:20:24,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-23 21:20:24,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279925172] [2023-11-23 21:20:24,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:20:24,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:20:24,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:24,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:20:24,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-23 21:20:24,246 INFO L87 Difference]: Start difference. First operand 101 states and 131 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 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) [2023-11-23 21:20:24,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:24,326 INFO L93 Difference]: Finished difference Result 223 states and 310 transitions. [2023-11-23 21:20:24,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:20:24,327 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 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 12 [2023-11-23 21:20:24,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:24,331 INFO L225 Difference]: With dead ends: 223 [2023-11-23 21:20:24,331 INFO L226 Difference]: Without dead ends: 221 [2023-11-23 21:20:24,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-23 21:20:24,335 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 31 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:24,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 36 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:20:24,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-11-23 21:20:24,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 198. [2023-11-23 21:20:24,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 193 states have (on average 1.3678756476683938) internal successors, (264), 197 states have internal predecessors, (264), 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) [2023-11-23 21:20:24,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 264 transitions. [2023-11-23 21:20:24,394 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 264 transitions. Word has length 12 [2023-11-23 21:20:24,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:24,394 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 264 transitions. [2023-11-23 21:20:24,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 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) [2023-11-23 21:20:24,395 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 264 transitions. [2023-11-23 21:20:24,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-23 21:20:24,396 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:24,397 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-23 21:20:24,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:20:24,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:24,614 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-23 21:20:24,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:24,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1351066791, now seen corresponding path program 1 times [2023-11-23 21:20:24,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:24,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628888552] [2023-11-23 21:20:24,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:24,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:24,687 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:24,687 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:24,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628888552] [2023-11-23 21:20:24,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628888552] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:20:24,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818818701] [2023-11-23 21:20:24,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:24,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:24,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:24,689 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:20:24,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:20:24,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:24,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:20:24,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:20:24,751 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:24,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:20:24,778 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:24,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818818701] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:20:24,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [73249968] [2023-11-23 21:20:24,782 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-23 21:20:24,783 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:20:24,783 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:20:24,783 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:20:24,787 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:20:25,113 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:20:25,568 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1515#(and (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= 2147483647 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-11-23 21:20:25,568 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:20:25,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:20:25,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-23 21:20:25,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224188250] [2023-11-23 21:20:25,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:20:25,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:20:25,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:25,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:20:25,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-11-23 21:20:25,571 INFO L87 Difference]: Start difference. First operand 198 states and 264 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 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) [2023-11-23 21:20:25,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:25,613 INFO L93 Difference]: Finished difference Result 329 states and 433 transitions. [2023-11-23 21:20:25,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:20:25,613 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 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 14 [2023-11-23 21:20:25,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:25,616 INFO L225 Difference]: With dead ends: 329 [2023-11-23 21:20:25,616 INFO L226 Difference]: Without dead ends: 328 [2023-11-23 21:20:25,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-11-23 21:20:25,618 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 12 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:25,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 52 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:20:25,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2023-11-23 21:20:25,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2023-11-23 21:20:25,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 323 states have (on average 1.263157894736842) internal successors, (408), 327 states have internal predecessors, (408), 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) [2023-11-23 21:20:25,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 408 transitions. [2023-11-23 21:20:25,655 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 408 transitions. Word has length 14 [2023-11-23 21:20:25,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:25,656 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 408 transitions. [2023-11-23 21:20:25,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 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) [2023-11-23 21:20:25,656 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 408 transitions. [2023-11-23 21:20:25,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-23 21:20:25,665 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:25,665 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1] [2023-11-23 21:20:25,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:20:25,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:25,884 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-23 21:20:25,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:25,885 INFO L85 PathProgramCache]: Analyzing trace with hash 681215329, now seen corresponding path program 2 times [2023-11-23 21:20:25,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:25,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132745781] [2023-11-23 21:20:25,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:25,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:25,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:26,041 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:26,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:26,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132745781] [2023-11-23 21:20:26,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132745781] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:20:26,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279205317] [2023-11-23 21:20:26,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 21:20:26,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:26,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:26,043 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:20:26,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 21:20:26,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-23 21:20:26,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:20:26,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:20:26,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:20:26,146 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:26,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:20:26,235 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:26,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279205317] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:20:26,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [928812068] [2023-11-23 21:20:26,238 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-23 21:20:26,239 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:20:26,239 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:20:26,239 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:20:26,239 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:20:26,322 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:20:26,518 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2443#(and (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= (+ |ULTIMATE.start_main_~a~0#1| 2147483648) 0))' at error location [2023-11-23 21:20:26,518 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:20:26,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:20:26,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-11-23 21:20:26,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580706557] [2023-11-23 21:20:26,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:20:26,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 21:20:26,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:26,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 21:20:26,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2023-11-23 21:20:26,522 INFO L87 Difference]: Start difference. First operand 328 states and 408 transitions. Second operand has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 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) [2023-11-23 21:20:26,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:26,708 INFO L93 Difference]: Finished difference Result 828 states and 1130 transitions. [2023-11-23 21:20:26,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 21:20:26,709 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 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 29 [2023-11-23 21:20:26,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:26,714 INFO L225 Difference]: With dead ends: 828 [2023-11-23 21:20:26,714 INFO L226 Difference]: Without dead ends: 826 [2023-11-23 21:20:26,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2023-11-23 21:20:26,718 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 112 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:26,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 69 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:20:26,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2023-11-23 21:20:26,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 602. [2023-11-23 21:20:26,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 597 states have (on average 1.3031825795644891) internal successors, (778), 601 states have internal predecessors, (778), 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) [2023-11-23 21:20:26,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 778 transitions. [2023-11-23 21:20:26,759 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 778 transitions. Word has length 29 [2023-11-23 21:20:26,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:26,759 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 778 transitions. [2023-11-23 21:20:26,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 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) [2023-11-23 21:20:26,761 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 778 transitions. [2023-11-23 21:20:26,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-23 21:20:26,763 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:26,763 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1] [2023-11-23 21:20:26,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 21:20:26,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:26,976 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-23 21:20:26,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:26,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1081708646, now seen corresponding path program 2 times [2023-11-23 21:20:26,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:26,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598428598] [2023-11-23 21:20:26,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:26,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:27,054 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:27,054 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:27,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598428598] [2023-11-23 21:20:27,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598428598] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:20:27,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214289643] [2023-11-23 21:20:27,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 21:20:27,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:27,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:27,057 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:20:27,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 21:20:27,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-23 21:20:27,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:20:27,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:20:27,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:20:27,158 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:27,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:20:27,262 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:27,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214289643] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:20:27,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1541322707] [2023-11-23 21:20:27,264 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-23 21:20:27,265 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:20:27,265 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:20:27,265 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:20:27,265 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:20:27,508 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:20:28,079 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4259#(and (<= 2 |ULTIMATE.start_main_~x~0#1|) (exists ((|v_ULTIMATE.start_main_#t~nondet1#1_59| Int)) (and (<= |v_ULTIMATE.start_main_#t~nondet1#1_59| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_#t~nondet1#1_59| 2147483648)) (not (= |v_ULTIMATE.start_main_#t~nondet1#1_59| 0)))) (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~max~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 2147483647 |ULTIMATE.start_main_~a~0#1|))' at error location [2023-11-23 21:20:28,079 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:20:28,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:20:28,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-11-23 21:20:28,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961364948] [2023-11-23 21:20:28,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:20:28,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 21:20:28,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:28,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 21:20:28,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2023-11-23 21:20:28,081 INFO L87 Difference]: Start difference. First operand 602 states and 778 transitions. Second operand has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 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) [2023-11-23 21:20:28,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:28,252 INFO L93 Difference]: Finished difference Result 1328 states and 1818 transitions. [2023-11-23 21:20:28,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 21:20:28,252 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 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 30 [2023-11-23 21:20:28,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:28,259 INFO L225 Difference]: With dead ends: 1328 [2023-11-23 21:20:28,260 INFO L226 Difference]: Without dead ends: 1326 [2023-11-23 21:20:28,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 72 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2023-11-23 21:20:28,262 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 49 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:28,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 78 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:20:28,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2023-11-23 21:20:28,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 828. [2023-11-23 21:20:28,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 823 states have (on average 1.307411907654921) internal successors, (1076), 827 states have internal predecessors, (1076), 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) [2023-11-23 21:20:28,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1076 transitions. [2023-11-23 21:20:28,316 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1076 transitions. Word has length 30 [2023-11-23 21:20:28,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:28,319 INFO L495 AbstractCegarLoop]: Abstraction has 828 states and 1076 transitions. [2023-11-23 21:20:28,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 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) [2023-11-23 21:20:28,319 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1076 transitions. [2023-11-23 21:20:28,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-23 21:20:28,320 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:28,320 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 1, 1, 1] [2023-11-23 21:20:28,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 21:20:28,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 21:20:28,536 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-23 21:20:28,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:28,537 INFO L85 PathProgramCache]: Analyzing trace with hash -139921252, now seen corresponding path program 2 times [2023-11-23 21:20:28,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:28,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71555105] [2023-11-23 21:20:28,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:28,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:28,618 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:28,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:28,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71555105] [2023-11-23 21:20:28,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71555105] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:20:28,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141388083] [2023-11-23 21:20:28,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 21:20:28,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:28,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:28,620 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:20:28,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 21:20:28,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-23 21:20:28,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:20:28,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:20:28,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:20:28,716 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:28,716 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:20:28,810 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:28,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141388083] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:20:28,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [534445334] [2023-11-23 21:20:28,812 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-23 21:20:28,813 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:20:28,813 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:20:28,813 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:20:28,813 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:20:29,069 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:20:29,579 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6908#(and (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= 2147483647 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-11-23 21:20:29,579 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:20:29,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:20:29,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-11-23 21:20:29,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607933792] [2023-11-23 21:20:29,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:20:29,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 21:20:29,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:29,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 21:20:29,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2023-11-23 21:20:29,582 INFO L87 Difference]: Start difference. First operand 828 states and 1076 transitions. Second operand has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 12 states have internal predecessors, (63), 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) [2023-11-23 21:20:29,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:29,730 INFO L93 Difference]: Finished difference Result 2079 states and 2701 transitions. [2023-11-23 21:20:29,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 21:20:29,731 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 12 states have internal predecessors, (63), 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 32 [2023-11-23 21:20:29,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:29,743 INFO L225 Difference]: With dead ends: 2079 [2023-11-23 21:20:29,743 INFO L226 Difference]: Without dead ends: 2078 [2023-11-23 21:20:29,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 78 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2023-11-23 21:20:29,746 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 51 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:29,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 88 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:20:29,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2078 states. [2023-11-23 21:20:29,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2078 to 2078. [2023-11-23 21:20:29,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2078 states, 2073 states have (on average 1.2021225277375784) internal successors, (2492), 2077 states have internal predecessors, (2492), 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) [2023-11-23 21:20:29,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2078 states to 2078 states and 2492 transitions. [2023-11-23 21:20:29,864 INFO L78 Accepts]: Start accepts. Automaton has 2078 states and 2492 transitions. Word has length 32 [2023-11-23 21:20:29,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:29,865 INFO L495 AbstractCegarLoop]: Abstraction has 2078 states and 2492 transitions. [2023-11-23 21:20:29,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 12 states have internal predecessors, (63), 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) [2023-11-23 21:20:29,865 INFO L276 IsEmpty]: Start isEmpty. Operand 2078 states and 2492 transitions. [2023-11-23 21:20:29,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-23 21:20:29,872 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:29,872 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1] [2023-11-23 21:20:29,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-23 21:20:30,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:30,094 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-23 21:20:30,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:30,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1787577901, now seen corresponding path program 3 times [2023-11-23 21:20:30,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:30,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935018589] [2023-11-23 21:20:30,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:30,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:30,340 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:30,341 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:30,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935018589] [2023-11-23 21:20:30,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935018589] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:20:30,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171035621] [2023-11-23 21:20:30,341 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 21:20:30,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:30,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:30,342 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:20:30,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 21:20:30,409 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 21:20:30,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:20:30,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 21:20:30,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:20:30,524 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:30,524 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:20:30,799 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:30,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171035621] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:20:30,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1548923520] [2023-11-23 21:20:30,801 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-23 21:20:30,802 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:20:30,802 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:20:30,802 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:20:30,802 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:20:30,877 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:20:31,054 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12040#(and (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= (+ |ULTIMATE.start_main_~a~0#1| 2147483648) 0))' at error location [2023-11-23 21:20:31,055 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:20:31,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:20:31,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2023-11-23 21:20:31,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655041405] [2023-11-23 21:20:31,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:20:31,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-23 21:20:31,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:31,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-23 21:20:31,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=627, Unknown=0, NotChecked=0, Total=930 [2023-11-23 21:20:31,058 INFO L87 Difference]: Start difference. First operand 2078 states and 2492 transitions. Second operand has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 24 states have internal predecessors, (129), 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) [2023-11-23 21:20:31,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:31,558 INFO L93 Difference]: Finished difference Result 4909 states and 6446 transitions. [2023-11-23 21:20:31,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-23 21:20:31,559 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 24 states have internal predecessors, (129), 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 65 [2023-11-23 21:20:31,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:31,585 INFO L225 Difference]: With dead ends: 4909 [2023-11-23 21:20:31,585 INFO L226 Difference]: Without dead ends: 4907 [2023-11-23 21:20:31,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=303, Invalid=627, Unknown=0, NotChecked=0, Total=930 [2023-11-23 21:20:31,591 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 331 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:31,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 141 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:20:31,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4907 states. [2023-11-23 21:20:31,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4907 to 3234. [2023-11-23 21:20:31,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3234 states, 3229 states have (on average 1.2335088262620006) internal successors, (3983), 3233 states have internal predecessors, (3983), 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) [2023-11-23 21:20:31,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 3983 transitions. [2023-11-23 21:20:31,831 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 3983 transitions. Word has length 65 [2023-11-23 21:20:31,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:31,831 INFO L495 AbstractCegarLoop]: Abstraction has 3234 states and 3983 transitions. [2023-11-23 21:20:31,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 24 states have internal predecessors, (129), 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) [2023-11-23 21:20:31,832 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 3983 transitions. [2023-11-23 21:20:31,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-23 21:20:31,836 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:31,837 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 1, 1, 1] [2023-11-23 21:20:31,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 21:20:32,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:32,048 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-23 21:20:32,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:32,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1666232252, now seen corresponding path program 3 times [2023-11-23 21:20:32,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:32,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862877866] [2023-11-23 21:20:32,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:32,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:32,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:32,259 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:32,259 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:32,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862877866] [2023-11-23 21:20:32,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862877866] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:20:32,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674279230] [2023-11-23 21:20:32,260 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 21:20:32,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:32,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:32,261 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:20:32,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 21:20:32,320 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 21:20:32,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:20:32,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 21:20:32,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:20:32,416 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:32,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:20:32,693 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:32,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674279230] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:20:32,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1279449944] [2023-11-23 21:20:32,696 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-23 21:20:32,696 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:20:32,697 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:20:32,697 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:20:32,697 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:20:32,934 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:20:33,450 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '21685#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= 2147483647 |ULTIMATE.start_main_~a~0#1|))' at error location [2023-11-23 21:20:33,450 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:20:33,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:20:33,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2023-11-23 21:20:33,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742497400] [2023-11-23 21:20:33,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:20:33,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-23 21:20:33,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:33,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-23 21:20:33,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=629, Unknown=0, NotChecked=0, Total=930 [2023-11-23 21:20:33,453 INFO L87 Difference]: Start difference. First operand 3234 states and 3983 transitions. Second operand has 24 states, 23 states have (on average 5.695652173913044) internal successors, (131), 24 states have internal predecessors, (131), 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) [2023-11-23 21:20:34,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:34,053 INFO L93 Difference]: Finished difference Result 7696 states and 10116 transitions. [2023-11-23 21:20:34,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-23 21:20:34,054 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.695652173913044) internal successors, (131), 24 states have internal predecessors, (131), 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 66 [2023-11-23 21:20:34,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:34,094 INFO L225 Difference]: With dead ends: 7696 [2023-11-23 21:20:34,094 INFO L226 Difference]: Without dead ends: 7694 [2023-11-23 21:20:34,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 168 SyntacticMatches, 11 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=301, Invalid=629, Unknown=0, NotChecked=0, Total=930 [2023-11-23 21:20:34,102 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 155 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:34,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 158 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:20:34,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7694 states. [2023-11-23 21:20:34,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7694 to 3958. [2023-11-23 21:20:34,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3958 states, 3953 states have (on average 1.245130280799393) internal successors, (4922), 3957 states have internal predecessors, (4922), 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) [2023-11-23 21:20:34,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3958 states to 3958 states and 4922 transitions. [2023-11-23 21:20:34,433 INFO L78 Accepts]: Start accepts. Automaton has 3958 states and 4922 transitions. Word has length 66 [2023-11-23 21:20:34,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:34,433 INFO L495 AbstractCegarLoop]: Abstraction has 3958 states and 4922 transitions. [2023-11-23 21:20:34,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.695652173913044) internal successors, (131), 24 states have internal predecessors, (131), 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) [2023-11-23 21:20:34,434 INFO L276 IsEmpty]: Start isEmpty. Operand 3958 states and 4922 transitions. [2023-11-23 21:20:34,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-23 21:20:34,438 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:34,439 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 1, 1, 1] [2023-11-23 21:20:34,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 21:20:34,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 21:20:34,652 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-23 21:20:34,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:34,653 INFO L85 PathProgramCache]: Analyzing trace with hash 773609158, now seen corresponding path program 3 times [2023-11-23 21:20:34,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:34,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670079238] [2023-11-23 21:20:34,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:34,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:34,910 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:34,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:34,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670079238] [2023-11-23 21:20:34,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670079238] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:20:34,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88869116] [2023-11-23 21:20:34,911 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 21:20:34,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:34,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:34,913 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:20:34,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 21:20:34,961 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 21:20:34,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:20:34,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 21:20:34,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:20:35,043 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:35,044 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:20:35,323 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:35,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88869116] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:20:35,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1709589908] [2023-11-23 21:20:35,326 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-23 21:20:35,326 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:20:35,326 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:20:35,326 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:20:35,327 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:20:35,474 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:20:35,938 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '35295#(and (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= 2147483647 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-11-23 21:20:35,938 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:20:35,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:20:35,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2023-11-23 21:20:35,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265297639] [2023-11-23 21:20:35,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:20:35,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-23 21:20:35,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:35,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-23 21:20:35,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=629, Unknown=0, NotChecked=0, Total=930 [2023-11-23 21:20:35,942 INFO L87 Difference]: Start difference. First operand 3958 states and 4922 transitions. Second operand has 24 states, 23 states have (on average 5.869565217391305) internal successors, (135), 24 states have internal predecessors, (135), 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) [2023-11-23 21:20:36,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:36,733 INFO L93 Difference]: Finished difference Result 13997 states and 17830 transitions. [2023-11-23 21:20:36,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-23 21:20:36,734 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.869565217391305) internal successors, (135), 24 states have internal predecessors, (135), 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 68 [2023-11-23 21:20:36,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:36,801 INFO L225 Difference]: With dead ends: 13997 [2023-11-23 21:20:36,801 INFO L226 Difference]: Without dead ends: 13996 [2023-11-23 21:20:36,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 174 SyntacticMatches, 11 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=301, Invalid=629, Unknown=0, NotChecked=0, Total=930 [2023-11-23 21:20:36,813 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 150 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:36,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 168 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:20:36,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13996 states. [2023-11-23 21:20:37,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13996 to 13996. [2023-11-23 21:20:37,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13996 states, 13991 states have (on average 1.166464155528554) internal successors, (16320), 13995 states have internal predecessors, (16320), 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) [2023-11-23 21:20:38,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13996 states to 13996 states and 16320 transitions. [2023-11-23 21:20:38,026 INFO L78 Accepts]: Start accepts. Automaton has 13996 states and 16320 transitions. Word has length 68 [2023-11-23 21:20:38,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:38,026 INFO L495 AbstractCegarLoop]: Abstraction has 13996 states and 16320 transitions. [2023-11-23 21:20:38,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.869565217391305) internal successors, (135), 24 states have internal predecessors, (135), 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) [2023-11-23 21:20:38,027 INFO L276 IsEmpty]: Start isEmpty. Operand 13996 states and 16320 transitions. [2023-11-23 21:20:38,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-23 21:20:38,062 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:38,062 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1, 1] [2023-11-23 21:20:38,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 21:20:38,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-23 21:20:38,276 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-23 21:20:38,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:38,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1804677047, now seen corresponding path program 4 times [2023-11-23 21:20:38,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:38,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319538850] [2023-11-23 21:20:38,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:38,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:39,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:39,127 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:39,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319538850] [2023-11-23 21:20:39,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319538850] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:20:39,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91954989] [2023-11-23 21:20:39,127 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-23 21:20:39,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:39,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:39,129 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:20:39,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 21:20:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:39,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-23 21:20:39,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:20:39,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:39,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:20:40,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:40,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91954989] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:20:40,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [320171916] [2023-11-23 21:20:40,470 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-23 21:20:40,470 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:20:40,471 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:20:40,471 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:20:40,471 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:20:40,580 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:20:40,813 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '67939#(and (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= (+ |ULTIMATE.start_main_~a~0#1| 2147483648) 0))' at error location [2023-11-23 21:20:40,813 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:20:40,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:20:40,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2023-11-23 21:20:40,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778092716] [2023-11-23 21:20:40,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:20:40,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-23 21:20:40,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:40,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-23 21:20:40,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1155, Invalid=1815, Unknown=0, NotChecked=0, Total=2970 [2023-11-23 21:20:40,823 INFO L87 Difference]: Start difference. First operand 13996 states and 16320 transitions. Second operand has 48 states, 47 states have (on average 5.808510638297872) internal successors, (273), 48 states have internal predecessors, (273), 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) [2023-11-23 21:20:43,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:43,202 INFO L93 Difference]: Finished difference Result 33407 states and 42048 transitions. [2023-11-23 21:20:43,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-23 21:20:43,203 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.808510638297872) internal successors, (273), 48 states have internal predecessors, (273), 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 137 [2023-11-23 21:20:43,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:43,264 INFO L225 Difference]: With dead ends: 33407 [2023-11-23 21:20:43,264 INFO L226 Difference]: Without dead ends: 33405 [2023-11-23 21:20:43,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1155, Invalid=1815, Unknown=0, NotChecked=0, Total=2970 [2023-11-23 21:20:43,292 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 688 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 635 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 635 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:43,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 285 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [635 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 21:20:43,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33405 states. [2023-11-23 21:20:44,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33405 to 18996. [2023-11-23 21:20:44,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18996 states, 18991 states have (on average 1.1898794165657416) internal successors, (22597), 18995 states have internal predecessors, (22597), 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) [2023-11-23 21:20:44,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18996 states to 18996 states and 22597 transitions. [2023-11-23 21:20:44,814 INFO L78 Accepts]: Start accepts. Automaton has 18996 states and 22597 transitions. Word has length 137 [2023-11-23 21:20:44,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:44,815 INFO L495 AbstractCegarLoop]: Abstraction has 18996 states and 22597 transitions. [2023-11-23 21:20:44,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.808510638297872) internal successors, (273), 48 states have internal predecessors, (273), 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) [2023-11-23 21:20:44,815 INFO L276 IsEmpty]: Start isEmpty. Operand 18996 states and 22597 transitions. [2023-11-23 21:20:44,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-23 21:20:44,849 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:44,849 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 1, 1, 1] [2023-11-23 21:20:44,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 21:20:45,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-23 21:20:45,064 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-23 21:20:45,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:45,065 INFO L85 PathProgramCache]: Analyzing trace with hash 2039147160, now seen corresponding path program 4 times [2023-11-23 21:20:45,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:45,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694193293] [2023-11-23 21:20:45,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:45,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:45,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:45,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:45,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694193293] [2023-11-23 21:20:45,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694193293] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:20:45,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383526434] [2023-11-23 21:20:45,936 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-23 21:20:45,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:45,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:45,937 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:20:45,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 21:20:46,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:46,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-23 21:20:46,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:20:46,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:46,193 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:20:47,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:47,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383526434] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:20:47,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1286062141] [2023-11-23 21:20:47,069 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-23 21:20:47,069 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:20:47,070 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:20:47,070 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:20:47,072 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:20:47,218 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:20:48,407 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '128094#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= 2147483647 |ULTIMATE.start_main_~a~0#1|))' at error location [2023-11-23 21:20:48,408 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:20:48,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:20:48,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2023-11-23 21:20:48,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557699982] [2023-11-23 21:20:48,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:20:48,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-23 21:20:48,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:48,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-23 21:20:48,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1153, Invalid=1817, Unknown=0, NotChecked=0, Total=2970 [2023-11-23 21:20:48,413 INFO L87 Difference]: Start difference. First operand 18996 states and 22597 transitions. Second operand has 48 states, 47 states have (on average 5.851063829787234) internal successors, (275), 48 states have internal predecessors, (275), 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) [2023-11-23 21:20:51,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:51,469 INFO L93 Difference]: Finished difference Result 50744 states and 64284 transitions. [2023-11-23 21:20:51,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-23 21:20:51,470 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.851063829787234) internal successors, (275), 48 states have internal predecessors, (275), 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 138 [2023-11-23 21:20:51,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:51,556 INFO L225 Difference]: With dead ends: 50744 [2023-11-23 21:20:51,556 INFO L226 Difference]: Without dead ends: 50742 [2023-11-23 21:20:51,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 360 SyntacticMatches, 23 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2065 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1153, Invalid=1817, Unknown=0, NotChecked=0, Total=2970 [2023-11-23 21:20:51,578 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 420 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:51,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 327 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 21:20:51,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50742 states. [2023-11-23 21:20:53,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50742 to 21810. [2023-11-23 21:20:53,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21810 states, 21805 states have (on average 1.1992662233432698) internal successors, (26150), 21809 states have internal predecessors, (26150), 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) [2023-11-23 21:20:53,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21810 states to 21810 states and 26150 transitions. [2023-11-23 21:20:53,733 INFO L78 Accepts]: Start accepts. Automaton has 21810 states and 26150 transitions. Word has length 138 [2023-11-23 21:20:53,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:53,733 INFO L495 AbstractCegarLoop]: Abstraction has 21810 states and 26150 transitions. [2023-11-23 21:20:53,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.851063829787234) internal successors, (275), 48 states have internal predecessors, (275), 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) [2023-11-23 21:20:53,734 INFO L276 IsEmpty]: Start isEmpty. Operand 21810 states and 26150 transitions. [2023-11-23 21:20:53,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-23 21:20:53,777 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:53,778 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 23, 22, 1, 1, 1] [2023-11-23 21:20:53,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 21:20:54,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-23 21:20:54,000 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-23 21:20:54,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:54,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1115335706, now seen corresponding path program 4 times [2023-11-23 21:20:54,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:54,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505154485] [2023-11-23 21:20:54,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:54,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:54,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:54,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 1518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:54,789 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:54,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505154485] [2023-11-23 21:20:54,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505154485] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:20:54,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482332256] [2023-11-23 21:20:54,789 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-23 21:20:54,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:54,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:54,793 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:20:54,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52604f15-b2d5-4cf9-b800-4feeff2c4035/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 21:20:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:54,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-23 21:20:54,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:20:55,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 1518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:55,062 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:20:56,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 1518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:56,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482332256] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:20:56,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1651722139] [2023-11-23 21:20:56,076 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-23 21:20:56,078 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:20:56,078 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:20:56,078 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:20:56,079 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:20:56,283 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:20:57,495 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '210900#(and (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= 2147483647 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-11-23 21:20:57,495 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:20:57,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:20:57,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2023-11-23 21:20:57,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639687684] [2023-11-23 21:20:57,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:20:57,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-23 21:20:57,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:57,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-23 21:20:57,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1153, Invalid=1817, Unknown=0, NotChecked=0, Total=2970 [2023-11-23 21:20:57,502 INFO L87 Difference]: Start difference. First operand 21810 states and 26150 transitions. Second operand has 48 states, 47 states have (on average 5.9361702127659575) internal successors, (279), 48 states have internal predecessors, (279), 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) [2023-11-23 21:21:05,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:21:05,814 INFO L93 Difference]: Finished difference Result 100833 states and 126622 transitions. [2023-11-23 21:21:05,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-23 21:21:05,814 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.9361702127659575) internal successors, (279), 48 states have internal predecessors, (279), 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 140 [2023-11-23 21:21:05,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:21:05,907 INFO L225 Difference]: With dead ends: 100833 [2023-11-23 21:21:05,907 INFO L226 Difference]: Without dead ends: 100832 [2023-11-23 21:21:05,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 366 SyntacticMatches, 23 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2065 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1153, Invalid=1817, Unknown=0, NotChecked=0, Total=2970 [2023-11-23 21:21:05,928 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 420 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:21:05,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 300 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:21:05,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100832 states.