./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-restricted-15/DivMinus.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/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_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-restricted-15/DivMinus.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/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_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/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 994e912bd4544afb34dfd80da3167326cad668e93cc9b8e5e1266c7e92b136ec --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:32:13,464 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:32:13,585 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-23 20:32:13,593 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:32:13,594 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:32:13,633 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:32:13,634 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:32:13,635 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:32:13,636 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:32:13,641 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:32:13,642 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:32:13,643 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:32:13,643 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:32:13,645 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:32:13,646 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:32:13,646 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:32:13,647 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:32:13,647 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:32:13,648 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:32:13,648 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:32:13,649 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:32:13,650 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:32:13,651 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:32:13,651 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:32:13,652 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:32:13,653 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:32:13,653 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:32:13,654 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:32:13,654 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:32:13,655 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:32:13,656 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:32:13,656 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:32:13,657 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:32:13,657 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:32:13,658 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:32:13,658 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:32:13,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:32:13,659 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:32:13,659 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:32:13,659 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:32:13,660 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:32:13,660 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:32:13,660 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:32:13,661 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:32:13,661 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:32:13,662 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:32:13,662 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_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 994e912bd4544afb34dfd80da3167326cad668e93cc9b8e5e1266c7e92b136ec [2023-11-23 20:32:13,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:32:13,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:32:13,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:32:13,972 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:32:13,973 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:32:13,974 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/termination-restricted-15/DivMinus.c [2023-11-23 20:32:17,101 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:32:17,291 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:32:17,292 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/sv-benchmarks/c/termination-restricted-15/DivMinus.c [2023-11-23 20:32:17,300 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/data/b8f0b08f6/0bfb96d7a7614282a0265c007962c866/FLAG7e73e7b68 [2023-11-23 20:32:17,316 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/data/b8f0b08f6/0bfb96d7a7614282a0265c007962c866 [2023-11-23 20:32:17,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:32:17,320 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:32:17,322 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:32:17,322 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:32:17,328 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:32:17,329 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:32:17" (1/1) ... [2023-11-23 20:32:17,331 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@590dd0c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:17, skipping insertion in model container [2023-11-23 20:32:17,331 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:32:17" (1/1) ... [2023-11-23 20:32:17,352 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:32:17,498 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:32:17,504 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:32:17,517 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:32:17,531 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:32:17,532 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:17 WrapperNode [2023-11-23 20:32:17,532 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:32:17,533 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:32:17,534 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:32:17,534 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:32:17,542 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:17" (1/1) ... [2023-11-23 20:32:17,547 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:17" (1/1) ... [2023-11-23 20:32:17,565 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2023-11-23 20:32:17,565 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:32:17,566 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:32:17,566 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:32:17,567 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:32:17,576 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:17" (1/1) ... [2023-11-23 20:32:17,577 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:17" (1/1) ... [2023-11-23 20:32:17,577 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:17" (1/1) ... [2023-11-23 20:32:17,578 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:17" (1/1) ... [2023-11-23 20:32:17,580 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:17" (1/1) ... [2023-11-23 20:32:17,583 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:17" (1/1) ... [2023-11-23 20:32:17,584 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:17" (1/1) ... [2023-11-23 20:32:17,585 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:17" (1/1) ... [2023-11-23 20:32:17,586 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:32:17,587 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:32:17,587 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:32:17,588 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:32:17,588 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:17" (1/1) ... [2023-11-23 20:32:17,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:32:17,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:17,620 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:32:17,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:32:17,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:32:17,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:32:17,741 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:32:17,744 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:32:17,826 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:32:17,859 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:32:17,860 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:32:17,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:32:17 BoogieIcfgContainer [2023-11-23 20:32:17,862 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:32:17,865 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:32:17,865 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:32:17,868 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:32:17,869 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:32:17" (1/3) ... [2023-11-23 20:32:17,869 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fcd329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:32:17, skipping insertion in model container [2023-11-23 20:32:17,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:17" (2/3) ... [2023-11-23 20:32:17,870 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fcd329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:32:17, skipping insertion in model container [2023-11-23 20:32:17,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:32:17" (3/3) ... [2023-11-23 20:32:17,872 INFO L112 eAbstractionObserver]: Analyzing ICFG DivMinus.c [2023-11-23 20:32:17,894 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:32:17,894 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-23 20:32:17,942 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:32:17,948 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;@79a4e1f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:32:17,949 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-23 20:32:17,957 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:17,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-23 20:32:17,968 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:17,969 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-23 20:32:17,972 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-23 20:32:17,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:17,983 INFO L85 PathProgramCache]: Analyzing trace with hash 57052, now seen corresponding path program 1 times [2023-11-23 20:32:17,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:17,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519076533] [2023-11-23 20:32:17,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:17,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:18,213 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 20:32:18,213 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:18,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519076533] [2023-11-23 20:32:18,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519076533] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:18,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:18,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:32:18,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646727344] [2023-11-23 20:32:18,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:18,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:32:18,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:18,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:32:18,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:32:18,269 INFO L87 Difference]: Start difference. First operand has 11 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:18,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:18,315 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2023-11-23 20:32:18,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:32:18,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-23 20:32:18,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:18,328 INFO L225 Difference]: With dead ends: 11 [2023-11-23 20:32:18,328 INFO L226 Difference]: Without dead ends: 9 [2023-11-23 20:32:18,331 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 20:32:18,339 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:18,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 9 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:32:18,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-23 20:32:18,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-11-23 20:32:18,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 6 states have (on average 1.5) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:18,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2023-11-23 20:32:18,409 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 3 [2023-11-23 20:32:18,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:18,410 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2023-11-23 20:32:18,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:18,410 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2023-11-23 20:32:18,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 20:32:18,411 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:18,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 20:32:18,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:32:18,412 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-23 20:32:18,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:18,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1768657, now seen corresponding path program 1 times [2023-11-23 20:32:18,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:18,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183181738] [2023-11-23 20:32:18,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:18,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:18,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:18,464 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 20:32:18,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:18,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183181738] [2023-11-23 20:32:18,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183181738] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:18,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:18,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:32:18,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114376065] [2023-11-23 20:32:18,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:18,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:32:18,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:18,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:32:18,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:32:18,477 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:18,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:18,538 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2023-11-23 20:32:18,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:32:18,539 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-23 20:32:18,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:18,539 INFO L225 Difference]: With dead ends: 9 [2023-11-23 20:32:18,539 INFO L226 Difference]: Without dead ends: 8 [2023-11-23 20:32:18,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:32:18,542 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 8 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 20:32:18,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 8 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:32:18,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-11-23 20:32:18,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-11-23 20:32:18,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 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 20:32:18,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-11-23 20:32:18,548 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-11-23 20:32:18,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:18,548 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-11-23 20:32:18,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:18,549 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-11-23 20:32:18,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-23 20:32:18,550 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:18,550 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 20:32:18,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 20:32:18,551 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-23 20:32:18,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:18,553 INFO L85 PathProgramCache]: Analyzing trace with hash 54828414, now seen corresponding path program 1 times [2023-11-23 20:32:18,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:18,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560061318] [2023-11-23 20:32:18,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:18,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:18,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:18,629 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 20:32:18,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:18,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560061318] [2023-11-23 20:32:18,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560061318] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:18,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:18,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 20:32:18,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638088672] [2023-11-23 20:32:18,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:18,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:32:18,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:18,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:32:18,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:32:18,636 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 20:32:18,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:18,657 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2023-11-23 20:32:18,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:32:18,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 20:32:18,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:18,659 INFO L225 Difference]: With dead ends: 8 [2023-11-23 20:32:18,659 INFO L226 Difference]: Without dead ends: 7 [2023-11-23 20:32:18,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 20:32:18,661 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:18,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:32:18,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2023-11-23 20:32:18,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2023-11-23 20:32:18,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 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 20:32:18,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2023-11-23 20:32:18,672 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2023-11-23 20:32:18,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:18,674 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2023-11-23 20:32:18,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 20:32:18,675 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2023-11-23 20:32:18,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 20:32:18,676 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:18,677 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-23 20:32:18,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 20:32:18,678 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-23 20:32:18,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:18,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1699680883, now seen corresponding path program 1 times [2023-11-23 20:32:18,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:18,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264418034] [2023-11-23 20:32:18,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:18,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:18,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:18,747 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 20:32:18,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:18,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264418034] [2023-11-23 20:32:18,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264418034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:18,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:18,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 20:32:18,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789271015] [2023-11-23 20:32:18,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:18,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:32:18,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:18,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:32:18,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:32:18,752 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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 20:32:18,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:18,778 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2023-11-23 20:32:18,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:32:18,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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 20:32:18,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:18,780 INFO L225 Difference]: With dead ends: 13 [2023-11-23 20:32:18,780 INFO L226 Difference]: Without dead ends: 12 [2023-11-23 20:32:18,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 20:32:18,785 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:18,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:32:18,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-23 20:32:18,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-11-23 20:32:18,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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 20:32:18,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2023-11-23 20:32:18,798 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 6 [2023-11-23 20:32:18,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:18,799 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2023-11-23 20:32:18,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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 20:32:18,800 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2023-11-23 20:32:18,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 20:32:18,801 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:18,801 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1] [2023-11-23 20:32:18,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 20:32:18,802 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-23 20:32:18,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:18,803 INFO L85 PathProgramCache]: Analyzing trace with hash 299858906, now seen corresponding path program 1 times [2023-11-23 20:32:18,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:18,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875994164] [2023-11-23 20:32:18,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:18,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:18,875 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:18,876 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:18,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875994164] [2023-11-23 20:32:18,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875994164] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:32:18,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712861419] [2023-11-23 20:32:18,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:18,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:18,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:18,880 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:18,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 20:32:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:18,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:32:18,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:19,018 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:19,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:32:19,074 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:19,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712861419] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:32:19,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [257164027] [2023-11-23 20:32:19,096 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-23 20:32:19,096 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:32:19,100 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:32:19,106 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:32:19,107 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:32:19,460 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 20:32:19,703 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '182#(and (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 2147483647 |ULTIMATE.start_main_~res~0#1|) (<= 1 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) 2147483647))' at error location [2023-11-23 20:32:19,703 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 20:32:19,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 20:32:19,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-11-23 20:32:19,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532757427] [2023-11-23 20:32:19,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 20:32:19,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 20:32:19,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:19,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 20:32:19,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-23 20:32:19,707 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 20:32:19,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:19,738 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2023-11-23 20:32:19,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 20:32:19,739 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 20:32:19,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:19,742 INFO L225 Difference]: With dead ends: 28 [2023-11-23 20:32:19,742 INFO L226 Difference]: Without dead ends: 27 [2023-11-23 20:32:19,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-23 20:32:19,745 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:19,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:32:19,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-23 20:32:19,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-11-23 20:32:19,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 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 20:32:19,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2023-11-23 20:32:19,754 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 11 [2023-11-23 20:32:19,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:19,755 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2023-11-23 20:32:19,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 20:32:19,755 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2023-11-23 20:32:19,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-23 20:32:19,757 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:19,757 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1] [2023-11-23 20:32:19,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 20:32:19,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:19,965 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-23 20:32:19,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:19,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1057903821, now seen corresponding path program 2 times [2023-11-23 20:32:19,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:19,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158027762] [2023-11-23 20:32:19,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:19,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:19,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:20,149 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:20,150 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:20,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158027762] [2023-11-23 20:32:20,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158027762] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:32:20,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70217752] [2023-11-23 20:32:20,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 20:32:20,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:20,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:20,158 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:20,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 20:32:20,208 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-23 20:32:20,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 20:32:20,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 20:32:20,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:20,276 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:20,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:32:20,370 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:20,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70217752] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:32:20,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1695352754] [2023-11-23 20:32:20,374 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-23 20:32:20,374 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:32:20,375 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:32:20,375 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:32:20,375 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:32:20,550 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 20:32:20,760 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '414#(and (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 2147483647 |ULTIMATE.start_main_~res~0#1|) (<= 1 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) 2147483647))' at error location [2023-11-23 20:32:20,760 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 20:32:20,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 20:32:20,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-23 20:32:20,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719479845] [2023-11-23 20:32:20,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 20:32:20,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 20:32:20,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:20,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 20:32:20,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-11-23 20:32:20,765 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 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 20:32:20,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:20,803 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2023-11-23 20:32:20,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 20:32:20,804 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 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 26 [2023-11-23 20:32:20,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:20,805 INFO L225 Difference]: With dead ends: 58 [2023-11-23 20:32:20,805 INFO L226 Difference]: Without dead ends: 57 [2023-11-23 20:32:20,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-11-23 20:32:20,807 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:20,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:32:20,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-11-23 20:32:20,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-11-23 20:32:20,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.0178571428571428) internal successors, (57), 56 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 20:32:20,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2023-11-23 20:32:20,819 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 26 [2023-11-23 20:32:20,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:20,820 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2023-11-23 20:32:20,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 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 20:32:20,820 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2023-11-23 20:32:20,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-23 20:32:20,823 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:20,823 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 1, 1] [2023-11-23 20:32:20,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 20:32:21,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:21,043 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-23 20:32:21,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:21,043 INFO L85 PathProgramCache]: Analyzing trace with hash -2074784685, now seen corresponding path program 3 times [2023-11-23 20:32:21,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:21,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93035678] [2023-11-23 20:32:21,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:21,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:21,358 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:21,358 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:21,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93035678] [2023-11-23 20:32:21,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93035678] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:32:21,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048320369] [2023-11-23 20:32:21,359 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 20:32:21,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:21,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:21,361 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:21,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 20:32:21,413 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 20:32:21,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 20:32:21,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 20:32:21,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:21,506 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:21,506 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:32:21,803 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:21,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048320369] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:32:21,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1821096614] [2023-11-23 20:32:21,809 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-23 20:32:21,810 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:32:21,810 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:32:21,810 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:32:21,810 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:32:21,938 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 20:32:22,178 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '910#(and (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 2147483647 |ULTIMATE.start_main_~res~0#1|) (<= 1 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) 2147483647))' at error location [2023-11-23 20:32:22,179 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 20:32:22,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 20:32:22,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2023-11-23 20:32:22,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196439720] [2023-11-23 20:32:22,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 20:32:22,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-23 20:32:22,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:22,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-23 20:32:22,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=523, Unknown=0, NotChecked=0, Total=812 [2023-11-23 20:32:22,183 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand has 24 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 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 20:32:22,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:22,301 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2023-11-23 20:32:22,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-23 20:32:22,302 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 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 56 [2023-11-23 20:32:22,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:22,308 INFO L225 Difference]: With dead ends: 118 [2023-11-23 20:32:22,308 INFO L226 Difference]: Without dead ends: 117 [2023-11-23 20:32:22,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=289, Invalid=523, Unknown=0, NotChecked=0, Total=812 [2023-11-23 20:32:22,310 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:22,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:32:22,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-11-23 20:32:22,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2023-11-23 20:32:22,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.0086206896551724) internal successors, (117), 116 states have internal predecessors, (117), 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 20:32:22,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2023-11-23 20:32:22,341 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 56 [2023-11-23 20:32:22,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:22,341 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2023-11-23 20:32:22,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 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 20:32:22,342 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2023-11-23 20:32:22,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-23 20:32:22,346 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:22,346 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 1, 1] [2023-11-23 20:32:22,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 20:32:22,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:22,565 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-23 20:32:22,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:22,565 INFO L85 PathProgramCache]: Analyzing trace with hash 420112019, now seen corresponding path program 4 times [2023-11-23 20:32:22,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:22,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893558467] [2023-11-23 20:32:22,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:22,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:22,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:23,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 0 proven. 1265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:23,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:23,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893558467] [2023-11-23 20:32:23,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893558467] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:32:23,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024837331] [2023-11-23 20:32:23,458 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-23 20:32:23,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:23,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:23,459 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:23,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 20:32:23,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:23,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-23 20:32:23,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:23,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 0 proven. 1265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:23,767 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:32:24,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 0 proven. 1265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:24,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024837331] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:32:24,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2068546139] [2023-11-23 20:32:24,928 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-23 20:32:24,928 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:32:24,929 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:32:24,929 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:32:24,929 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:32:25,033 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 20:32:25,346 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1934#(and (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 2147483647 |ULTIMATE.start_main_~res~0#1|) (<= 1 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) 2147483647))' at error location [2023-11-23 20:32:25,347 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 20:32:25,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 20:32:25,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2023-11-23 20:32:25,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399451137] [2023-11-23 20:32:25,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 20:32:25,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-23 20:32:25,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:25,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-23 20:32:25,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1141, Invalid=1615, Unknown=0, NotChecked=0, Total=2756 [2023-11-23 20:32:25,353 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand has 48 states, 47 states have (on average 4.9361702127659575) internal successors, (232), 47 states have internal predecessors, (232), 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 20:32:25,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:25,588 INFO L93 Difference]: Finished difference Result 238 states and 261 transitions. [2023-11-23 20:32:25,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-23 20:32:25,589 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.9361702127659575) internal successors, (232), 47 states have internal predecessors, (232), 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 116 [2023-11-23 20:32:25,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:25,595 INFO L225 Difference]: With dead ends: 238 [2023-11-23 20:32:25,595 INFO L226 Difference]: Without dead ends: 237 [2023-11-23 20:32:25,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1141, Invalid=1615, Unknown=0, NotChecked=0, Total=2756 [2023-11-23 20:32:25,599 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:25,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 142 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:32:25,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-11-23 20:32:25,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2023-11-23 20:32:25,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.0042372881355932) internal successors, (237), 236 states have internal predecessors, (237), 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 20:32:25,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 237 transitions. [2023-11-23 20:32:25,632 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 237 transitions. Word has length 116 [2023-11-23 20:32:25,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:25,634 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 237 transitions. [2023-11-23 20:32:25,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.9361702127659575) internal successors, (232), 47 states have internal predecessors, (232), 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 20:32:25,635 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 237 transitions. [2023-11-23 20:32:25,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-11-23 20:32:25,648 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:25,649 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 46, 1, 1] [2023-11-23 20:32:25,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 20:32:25,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:25,864 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-23 20:32:25,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:25,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1336146707, now seen corresponding path program 5 times [2023-11-23 20:32:25,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:25,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856054961] [2023-11-23 20:32:25,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:25,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:28,534 INFO L134 CoverageAnalysis]: Checked inductivity of 5405 backedges. 0 proven. 5405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:28,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:28,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856054961] [2023-11-23 20:32:28,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856054961] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:32:28,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253117486] [2023-11-23 20:32:28,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 20:32:28,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:28,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:28,537 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:28,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 20:32:28,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2023-11-23 20:32:28,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 20:32:28,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-23 20:32:28,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:29,093 INFO L134 CoverageAnalysis]: Checked inductivity of 5405 backedges. 0 proven. 5405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:29,094 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:32:32,644 INFO L134 CoverageAnalysis]: Checked inductivity of 5405 backedges. 0 proven. 5405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:32,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253117486] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:32:32,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [390110756] [2023-11-23 20:32:32,647 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-23 20:32:32,647 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:32:32,648 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:32:32,648 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:32:32,648 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:32:32,722 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 20:32:33,098 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4014#(and (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 2147483647 |ULTIMATE.start_main_~res~0#1|) (<= 1 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) 2147483647))' at error location [2023-11-23 20:32:33,098 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 20:32:33,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 20:32:33,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2023-11-23 20:32:33,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757307324] [2023-11-23 20:32:33,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 20:32:33,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-11-23 20:32:33,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:33,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-11-23 20:32:33,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4573, Invalid=5527, Unknown=0, NotChecked=0, Total=10100 [2023-11-23 20:32:33,108 INFO L87 Difference]: Start difference. First operand 237 states and 237 transitions. Second operand has 96 states, 95 states have (on average 4.968421052631579) internal successors, (472), 95 states have internal predecessors, (472), 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 20:32:33,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:33,613 INFO L93 Difference]: Finished difference Result 478 states and 525 transitions. [2023-11-23 20:32:33,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-11-23 20:32:33,614 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 4.968421052631579) internal successors, (472), 95 states have internal predecessors, (472), 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 236 [2023-11-23 20:32:33,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:33,618 INFO L225 Difference]: With dead ends: 478 [2023-11-23 20:32:33,618 INFO L226 Difference]: Without dead ends: 477 [2023-11-23 20:32:33,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 654 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=4573, Invalid=5527, Unknown=0, NotChecked=0, Total=10100 [2023-11-23 20:32:33,624 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:33,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 286 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 20:32:33,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2023-11-23 20:32:33,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 477. [2023-11-23 20:32:33,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 476 states have (on average 1.0021008403361344) internal successors, (477), 476 states have internal predecessors, (477), 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 20:32:33,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 477 transitions. [2023-11-23 20:32:33,650 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 477 transitions. Word has length 236 [2023-11-23 20:32:33,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:33,651 INFO L495 AbstractCegarLoop]: Abstraction has 477 states and 477 transitions. [2023-11-23 20:32:33,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 4.968421052631579) internal successors, (472), 95 states have internal predecessors, (472), 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 20:32:33,651 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 477 transitions. [2023-11-23 20:32:33,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2023-11-23 20:32:33,659 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:33,659 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 95, 94, 1, 1] [2023-11-23 20:32:33,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-23 20:32:33,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:33,873 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-23 20:32:33,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:33,874 INFO L85 PathProgramCache]: Analyzing trace with hash -514546669, now seen corresponding path program 6 times [2023-11-23 20:32:33,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:33,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549032759] [2023-11-23 20:32:33,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:33,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:34,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:42,956 INFO L134 CoverageAnalysis]: Checked inductivity of 22325 backedges. 0 proven. 22325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:42,956 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:42,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549032759] [2023-11-23 20:32:42,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549032759] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:32:42,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147134292] [2023-11-23 20:32:42,956 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 20:32:42,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:42,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:42,958 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:42,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 20:32:43,142 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 20:32:43,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 20:32:43,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 956 conjuncts, 96 conjunts are in the unsatisfiable core [2023-11-23 20:32:43,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:43,902 INFO L134 CoverageAnalysis]: Checked inductivity of 22325 backedges. 0 proven. 22325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:43,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:32:55,933 INFO L134 CoverageAnalysis]: Checked inductivity of 22325 backedges. 0 proven. 22325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:55,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147134292] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:32:55,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1443121892] [2023-11-23 20:32:55,936 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-23 20:32:55,936 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:32:55,936 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:32:55,937 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:32:55,937 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:32:56,057 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 20:32:56,724 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8206#(and (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 2147483647 |ULTIMATE.start_main_~res~0#1|) (<= 1 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) 2147483647))' at error location [2023-11-23 20:32:56,724 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 20:32:56,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 20:32:56,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2023-11-23 20:32:56,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483145840] [2023-11-23 20:32:56,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 20:32:56,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2023-11-23 20:32:56,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:56,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2023-11-23 20:32:56,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18349, Invalid=20263, Unknown=0, NotChecked=0, Total=38612 [2023-11-23 20:32:56,770 INFO L87 Difference]: Start difference. First operand 477 states and 477 transitions. Second operand has 192 states, 191 states have (on average 4.984293193717278) internal successors, (952), 191 states have internal predecessors, (952), 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 20:32:58,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:58,758 INFO L93 Difference]: Finished difference Result 958 states and 1053 transitions. [2023-11-23 20:32:58,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2023-11-23 20:32:58,759 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 4.984293193717278) internal successors, (952), 191 states have internal predecessors, (952), 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 476 [2023-11-23 20:32:58,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:58,766 INFO L225 Difference]: With dead ends: 958 [2023-11-23 20:32:58,766 INFO L226 Difference]: Without dead ends: 957 [2023-11-23 20:32:58,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1521 GetRequests, 1326 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1418 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=18349, Invalid=20263, Unknown=0, NotChecked=0, Total=38612 [2023-11-23 20:32:58,772 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:58,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 574 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 20:32:58,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2023-11-23 20:32:58,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 957. [2023-11-23 20:32:58,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 1.0010460251046025) internal successors, (957), 956 states have internal predecessors, (957), 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 20:32:58,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 957 transitions. [2023-11-23 20:32:58,821 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 957 transitions. Word has length 476 [2023-11-23 20:32:58,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:58,823 INFO L495 AbstractCegarLoop]: Abstraction has 957 states and 957 transitions. [2023-11-23 20:32:58,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 4.984293193717278) internal successors, (952), 191 states have internal predecessors, (952), 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 20:32:58,825 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 957 transitions. [2023-11-23 20:32:58,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 957 [2023-11-23 20:32:58,865 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:58,866 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 191, 191, 190, 1, 1] [2023-11-23 20:32:58,889 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-23 20:32:59,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad46027-3f07-4e34-9fb8-0a0ac6ace2fe/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 20:32:59,081 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-23 20:32:59,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:59,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1420555795, now seen corresponding path program 7 times [2023-11-23 20:32:59,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:59,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062955972] [2023-11-23 20:32:59,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:59,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat