./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/avg60-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/reducercommutativity/avg60-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 536af0e32effc3a2288f843fefca54fb0104ab1d17ed14d79ddc92c629dbee95 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 23:28:55,328 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 23:28:55,413 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-13 23:28:55,425 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 23:28:55,425 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 23:28:55,462 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 23:28:55,463 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 23:28:55,464 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 23:28:55,464 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 23:28:55,465 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 23:28:55,466 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-13 23:28:55,466 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-13 23:28:55,466 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-13 23:28:55,466 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-13 23:28:55,467 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-13 23:28:55,467 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-13 23:28:55,467 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-13 23:28:55,467 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-13 23:28:55,467 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-13 23:28:55,467 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-13 23:28:55,468 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-13 23:28:55,468 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-13 23:28:55,468 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 23:28:55,468 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 23:28:55,468 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 23:28:55,469 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 23:28:55,469 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 23:28:55,469 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 23:28:55,469 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 23:28:55,469 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 23:28:55,469 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 23:28:55,469 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 23:28:55,469 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 23:28:55,469 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 23:28:55,469 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 23:28:55,470 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 23:28:55,470 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 23:28:55,470 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 23:28:55,470 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:28:55,470 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 23:28:55,470 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 23:28:55,470 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 23:28:55,470 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-13 23:28:55,470 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 23:28:55,470 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 23:28:55,470 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-13 23:28:55,471 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 23:28:55,471 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E 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 ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 536af0e32effc3a2288f843fefca54fb0104ab1d17ed14d79ddc92c629dbee95 [2024-11-13 23:28:55,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 23:28:55,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 23:28:55,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 23:28:55,842 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 23:28:55,842 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 23:28:55,844 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/reducercommutativity/avg60-1.i Unable to find full path for "g++" [2024-11-13 23:28:57,715 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 23:28:58,048 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 23:28:58,049 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/sv-benchmarks/c/reducercommutativity/avg60-1.i [2024-11-13 23:28:58,061 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/data/4f1ab3fb5/be75d3bdd5674e7393c136ef18ff6d82/FLAGa142ff30e [2024-11-13 23:28:58,299 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/data/4f1ab3fb5/be75d3bdd5674e7393c136ef18ff6d82 [2024-11-13 23:28:58,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 23:28:58,304 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 23:28:58,306 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 23:28:58,307 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 23:28:58,313 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 23:28:58,314 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:28:58" (1/1) ... [2024-11-13 23:28:58,315 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48e9e00c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:28:58, skipping insertion in model container [2024-11-13 23:28:58,316 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:28:58" (1/1) ... [2024-11-13 23:28:58,335 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 23:28:58,507 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/sv-benchmarks/c/reducercommutativity/avg60-1.i[1282,1295] [2024-11-13 23:28:58,511 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:28:58,528 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 23:28:58,570 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/sv-benchmarks/c/reducercommutativity/avg60-1.i[1282,1295] [2024-11-13 23:28:58,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:28:58,597 INFO L204 MainTranslator]: Completed translation [2024-11-13 23:28:58,598 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:28:58 WrapperNode [2024-11-13 23:28:58,598 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 23:28:58,599 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 23:28:58,600 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 23:28:58,601 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 23:28:58,610 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:28:58" (1/1) ... [2024-11-13 23:28:58,619 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:28:58" (1/1) ... [2024-11-13 23:28:58,657 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2024-11-13 23:28:58,659 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 23:28:58,660 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 23:28:58,660 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 23:28:58,660 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 23:28:58,671 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:28:58" (1/1) ... [2024-11-13 23:28:58,672 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:28:58" (1/1) ... [2024-11-13 23:28:58,675 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:28:58" (1/1) ... [2024-11-13 23:28:58,677 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:28:58" (1/1) ... [2024-11-13 23:28:58,686 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:28:58" (1/1) ... [2024-11-13 23:28:58,694 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:28:58" (1/1) ... [2024-11-13 23:28:58,702 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:28:58" (1/1) ... [2024-11-13 23:28:58,704 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:28:58" (1/1) ... [2024-11-13 23:28:58,706 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 23:28:58,708 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 23:28:58,709 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 23:28:58,709 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 23:28:58,710 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:28:58" (1/1) ... [2024-11-13 23:28:58,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:28:58,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:28:58,759 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-13 23:28:58,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-13 23:28:58,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 23:28:58,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 23:28:58,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 23:28:58,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-13 23:28:58,792 INFO L130 BoogieDeclarations]: Found specification of procedure avg [2024-11-13 23:28:58,792 INFO L138 BoogieDeclarations]: Found implementation of procedure avg [2024-11-13 23:28:58,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 23:28:58,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 23:28:58,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-13 23:28:58,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 23:28:58,903 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 23:28:58,906 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 23:28:59,189 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-13 23:28:59,189 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 23:28:59,265 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 23:28:59,265 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-13 23:28:59,265 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:28:59 BoogieIcfgContainer [2024-11-13 23:28:59,266 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 23:28:59,269 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 23:28:59,269 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 23:28:59,276 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 23:28:59,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 11:28:58" (1/3) ... [2024-11-13 23:28:59,277 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dbf62fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:28:59, skipping insertion in model container [2024-11-13 23:28:59,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:28:58" (2/3) ... [2024-11-13 23:28:59,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dbf62fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:28:59, skipping insertion in model container [2024-11-13 23:28:59,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:28:59" (3/3) ... [2024-11-13 23:28:59,279 INFO L112 eAbstractionObserver]: Analyzing ICFG avg60-1.i [2024-11-13 23:28:59,300 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 23:28:59,302 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG avg60-1.i that has 2 procedures, 17 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-13 23:28:59,377 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 23:28:59,400 INFO L333 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, 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;@622d819c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 23:28:59,400 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 23:28:59,406 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 23:28:59,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 23:28:59,417 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:28:59,418 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:28:59,420 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:28:59,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:28:59,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1031124826, now seen corresponding path program 1 times [2024-11-13 23:28:59,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:28:59,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401066413] [2024-11-13 23:28:59,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:59,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:28:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:59,913 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-13 23:28:59,914 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:28:59,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401066413] [2024-11-13 23:28:59,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401066413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:28:59,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:28:59,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:28:59,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871031045] [2024-11-13 23:28:59,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:28:59,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:28:59,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:28:59,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:28:59,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:28:59,952 INFO L87 Difference]: Start difference. First operand has 17 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 23:29:00,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:29:00,004 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2024-11-13 23:29:00,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:29:00,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2024-11-13 23:29:00,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:29:00,022 INFO L225 Difference]: With dead ends: 33 [2024-11-13 23:29:00,023 INFO L226 Difference]: Without dead ends: 16 [2024-11-13 23:29:00,028 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:29:00,032 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 23:29:00,033 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 23:29:00,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-13 23:29:00,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-13 23:29:00,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 23:29:00,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2024-11-13 23:29:00,071 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 20 [2024-11-13 23:29:00,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:29:00,071 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2024-11-13 23:29:00,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 23:29:00,072 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2024-11-13 23:29:00,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 23:29:00,074 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:29:00,074 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:29:00,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 23:29:00,075 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:29:00,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:29:00,076 INFO L85 PathProgramCache]: Analyzing trace with hash 456899398, now seen corresponding path program 1 times [2024-11-13 23:29:00,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:29:00,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885371115] [2024-11-13 23:29:00,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:29:00,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:29:00,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:29:00,326 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-13 23:29:00,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:29:00,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885371115] [2024-11-13 23:29:00,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885371115] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:29:00,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214725110] [2024-11-13 23:29:00,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:29:00,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:29:00,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:29:00,331 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:29:00,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 23:29:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:29:00,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 23:29:00,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:29:00,558 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 23:29:00,558 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:29:00,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214725110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:29:00,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:29:00,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-13 23:29:00,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986085515] [2024-11-13 23:29:00,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:29:00,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:29:00,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:29:00,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:29:00,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:29:00,565 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 23:29:00,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:29:00,601 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2024-11-13 23:29:00,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:29:00,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-11-13 23:29:00,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:29:00,604 INFO L225 Difference]: With dead ends: 29 [2024-11-13 23:29:00,604 INFO L226 Difference]: Without dead ends: 17 [2024-11-13 23:29:00,605 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:29:00,607 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 23:29:00,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 23:29:00,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-13 23:29:00,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-13 23:29:00,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 23:29:00,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2024-11-13 23:29:00,618 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 21 [2024-11-13 23:29:00,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:29:00,619 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2024-11-13 23:29:00,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 23:29:00,619 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2024-11-13 23:29:00,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-13 23:29:00,622 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:29:00,624 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:29:00,650 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 23:29:00,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:29:00,825 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:29:00,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:29:00,826 INFO L85 PathProgramCache]: Analyzing trace with hash 288247062, now seen corresponding path program 1 times [2024-11-13 23:29:00,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:29:00,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201716148] [2024-11-13 23:29:00,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:29:00,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:29:00,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:29:01,057 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 23:29:01,057 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:29:01,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201716148] [2024-11-13 23:29:01,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201716148] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:29:01,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92016524] [2024-11-13 23:29:01,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:29:01,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:29:01,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:29:01,061 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:29:01,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 23:29:01,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:29:01,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 23:29:01,224 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:29:01,251 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 23:29:01,251 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:29:01,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92016524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:29:01,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:29:01,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-13 23:29:01,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855613539] [2024-11-13 23:29:01,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:29:01,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:29:01,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:29:01,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:29:01,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:29:01,256 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 23:29:01,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:29:01,285 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2024-11-13 23:29:01,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:29:01,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2024-11-13 23:29:01,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:29:01,288 INFO L225 Difference]: With dead ends: 27 [2024-11-13 23:29:01,288 INFO L226 Difference]: Without dead ends: 18 [2024-11-13 23:29:01,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:29:01,290 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 23:29:01,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 23:29:01,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-13 23:29:01,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-13 23:29:01,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 23:29:01,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-11-13 23:29:01,302 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 24 [2024-11-13 23:29:01,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:29:01,304 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-11-13 23:29:01,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 23:29:01,304 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-11-13 23:29:01,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-13 23:29:01,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:29:01,305 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:29:01,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 23:29:01,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:29:01,510 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:29:01,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:29:01,511 INFO L85 PathProgramCache]: Analyzing trace with hash -27654738, now seen corresponding path program 1 times [2024-11-13 23:29:01,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:29:01,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726275448] [2024-11-13 23:29:01,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:29:01,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:29:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:29:01,675 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 23:29:01,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:29:01,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726275448] [2024-11-13 23:29:01,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726275448] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:29:01,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40907363] [2024-11-13 23:29:01,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:29:01,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:29:01,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:29:01,683 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:29:01,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 23:29:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:29:01,811 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 23:29:01,813 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:29:01,849 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 23:29:01,851 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:29:01,912 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 23:29:01,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40907363] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:29:01,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [803179926] [2024-11-13 23:29:01,933 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-13 23:29:01,933 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:29:01,937 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:29:01,941 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:29:01,942 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:29:03,579 INFO L197 IcfgInterpreter]: Interpreting procedure avg with input of size 10 for LOIs [2024-11-13 23:29:03,649 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:29:27,514 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '533#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~ret2~0#1_14| Int) (|v_ULTIMATE.start_main_~ret~1#1_14| Int) (|v_ULTIMATE.start_main_~ret5~0#1_14| Int)) (and (<= |v_ULTIMATE.start_main_~ret5~0#1_14| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_14| 2147483648)) (<= |v_ULTIMATE.start_main_~ret~1#1_14| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_14| 2147483648)) (or (and (exists ((|v_#memory_int_30| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_30| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_30| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))))) (exists ((v_avg_~ret~0_29 Int)) (and (or (< 0 (+ v_avg_~ret~0_29 1)) (= (mod v_avg_~ret~0_29 60) 0)) (or (= (mod (div v_avg_~ret~0_29 60) 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_14|) (= (mod (div v_avg_~ret~0_29 60) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_14| 4294967296)))))) (and (exists ((v_avg_~ret~0_29 Int)) (and (not (= (mod v_avg_~ret~0_29 60) 0)) (<= (+ v_avg_~ret~0_29 1) 0) (or (= (+ |v_ULTIMATE.start_main_~ret5~0#1_14| 4294967296) (mod (+ (div v_avg_~ret~0_29 60) 1) 4294967296)) (= |v_ULTIMATE.start_main_~ret5~0#1_14| (mod (+ (div v_avg_~ret~0_29 60) 1) 4294967296))))) (exists ((|v_#memory_int_30| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_30| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_30| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))))))) (or (not (= |v_ULTIMATE.start_main_~ret~1#1_14| |v_ULTIMATE.start_main_~ret5~0#1_14|)) (not (= |v_ULTIMATE.start_main_~ret2~0#1_14| |v_ULTIMATE.start_main_~ret~1#1_14|))) (<= |v_ULTIMATE.start_main_~ret2~0#1_14| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_14| 2147483648)))) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0))' at error location [2024-11-13 23:29:27,515 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-13 23:29:27,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 23:29:27,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2024-11-13 23:29:27,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875735909] [2024-11-13 23:29:27,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 23:29:27,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 23:29:27,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:29:27,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 23:29:27,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=292, Unknown=13, NotChecked=0, Total=380 [2024-11-13 23:29:27,522 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-13 23:29:27,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:29:27,569 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2024-11-13 23:29:27,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 23:29:27,572 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 25 [2024-11-13 23:29:27,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:29:27,572 INFO L225 Difference]: With dead ends: 36 [2024-11-13 23:29:27,573 INFO L226 Difference]: Without dead ends: 21 [2024-11-13 23:29:27,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 23.9s TimeCoverageRelationStatistics Valid=75, Invalid=292, Unknown=13, NotChecked=0, Total=380 [2024-11-13 23:29:27,574 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 23:29:27,577 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 23:29:27,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-13 23:29:27,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-13 23:29:27,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 23:29:27,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-11-13 23:29:27,588 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 25 [2024-11-13 23:29:27,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:29:27,588 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-11-13 23:29:27,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-13 23:29:27,589 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-11-13 23:29:27,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-13 23:29:27,590 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:29:27,590 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:29:27,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 23:29:27,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:29:27,791 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:29:27,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:29:27,792 INFO L85 PathProgramCache]: Analyzing trace with hash -2073955646, now seen corresponding path program 2 times [2024-11-13 23:29:27,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:29:27,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307661399] [2024-11-13 23:29:27,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:29:27,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:29:27,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:29:27,993 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 23:29:27,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:29:27,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307661399] [2024-11-13 23:29:27,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307661399] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:29:27,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491390096] [2024-11-13 23:29:27,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 23:29:27,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:29:27,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:29:28,002 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:29:28,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 23:29:28,108 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 23:29:28,108 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 23:29:28,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 23:29:28,112 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:29:28,135 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 23:29:28,136 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:29:28,192 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 23:29:28,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491390096] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:29:28,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1872332013] [2024-11-13 23:29:28,198 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-13 23:29:28,199 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:29:28,199 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:29:28,199 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:29:28,200 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:29:29,842 INFO L197 IcfgInterpreter]: Interpreting procedure avg with input of size 10 for LOIs [2024-11-13 23:29:29,887 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:29:58,193 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '809#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~ret2~0#1_15| Int) (|v_ULTIMATE.start_main_~ret~1#1_15| Int) (|v_ULTIMATE.start_main_~ret5~0#1_16| Int)) (and (<= |v_ULTIMATE.start_main_~ret2~0#1_15| 2147483647) (or (and (exists ((|v_#memory_int_38| (Array Int (Array Int Int)))) (= (store |v_#memory_int_38| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_38| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))) |#memory_int|)) (exists ((v_avg_~ret~0_51 Int)) (and (or (and (= (mod (div v_avg_~ret~0_51 60) 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_16|) (or (= (mod v_avg_~ret~0_51 60) 0) (< 0 (+ v_avg_~ret~0_51 1)))) (and (= (mod (div v_avg_~ret~0_51 60) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_16| 4294967296)) (or (= (mod v_avg_~ret~0_51 60) 0) (< 0 (+ v_avg_~ret~0_51 1)))) (and (= (mod (+ (div v_avg_~ret~0_51 60) 1) 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_16|) (not (= (mod v_avg_~ret~0_51 60) 0)) (<= (+ v_avg_~ret~0_51 1) 0))) (<= (mod (+ (div v_avg_~ret~0_51 60) 1) 4294967296) 2147483647)))) (and (exists ((|v_#memory_int_38| (Array Int (Array Int Int)))) (= (store |v_#memory_int_38| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_38| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))) |#memory_int|)) (exists ((v_avg_~ret~0_51 Int)) (and (or (and (= (mod (div v_avg_~ret~0_51 60) 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_16|) (or (= (mod v_avg_~ret~0_51 60) 0) (< 0 (+ v_avg_~ret~0_51 1)))) (and (= (mod (div v_avg_~ret~0_51 60) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_16| 4294967296)) (or (= (mod v_avg_~ret~0_51 60) 0) (< 0 (+ v_avg_~ret~0_51 1)))) (and (not (= (mod v_avg_~ret~0_51 60) 0)) (<= (+ v_avg_~ret~0_51 1) 0) (= (mod (+ (div v_avg_~ret~0_51 60) 1) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_16| 4294967296)))) (<= 2147483648 (mod (+ (div v_avg_~ret~0_51 60) 1) 4294967296)))))) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_15| 2147483648)) (<= |v_ULTIMATE.start_main_~ret5~0#1_16| 2147483647) (<= |v_ULTIMATE.start_main_~ret~1#1_15| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_16| 2147483648)) (or (not (= |v_ULTIMATE.start_main_~ret2~0#1_15| |v_ULTIMATE.start_main_~ret~1#1_15|)) (not (= |v_ULTIMATE.start_main_~ret~1#1_15| |v_ULTIMATE.start_main_~ret5~0#1_16|))) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_15| 2147483648)))) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0))' at error location [2024-11-13 23:29:58,194 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-13 23:29:58,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 23:29:58,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-13 23:29:58,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743899447] [2024-11-13 23:29:58,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 23:29:58,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 23:29:58,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:29:58,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 23:29:58,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=290, Unknown=15, NotChecked=0, Total=380 [2024-11-13 23:29:58,197 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 23:29:58,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:29:58,230 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2024-11-13 23:29:58,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 23:29:58,230 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 28 [2024-11-13 23:29:58,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:29:58,231 INFO L225 Difference]: With dead ends: 38 [2024-11-13 23:29:58,231 INFO L226 Difference]: Without dead ends: 24 [2024-11-13 23:29:58,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 28.3s TimeCoverageRelationStatistics Valid=75, Invalid=290, Unknown=15, NotChecked=0, Total=380 [2024-11-13 23:29:58,233 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 23:29:58,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 23:29:58,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-13 23:29:58,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-13 23:29:58,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 23:29:58,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-11-13 23:29:58,239 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 28 [2024-11-13 23:29:58,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:29:58,239 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-11-13 23:29:58,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 23:29:58,240 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-11-13 23:29:58,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 23:29:58,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:29:58,242 INFO L215 NwaCegarLoop]: trace histogram [12, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:29:58,268 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 23:29:58,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:29:58,443 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:29:58,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:29:58,443 INFO L85 PathProgramCache]: Analyzing trace with hash -791207506, now seen corresponding path program 3 times [2024-11-13 23:29:58,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:29:58,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296485906] [2024-11-13 23:29:58,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:29:58,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:29:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:29:58,585 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-13 23:29:58,585 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:29:58,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296485906] [2024-11-13 23:29:58,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296485906] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:29:58,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831176837] [2024-11-13 23:29:58,586 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 23:29:58,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:29:58,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:29:58,588 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:29:58,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 23:29:58,689 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 23:29:58,689 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 23:29:58,691 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 23:29:58,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:29:58,755 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-13 23:29:58,756 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:29:58,872 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-13 23:29:58,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831176837] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:29:58,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [888224299] [2024-11-13 23:29:58,875 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-13 23:29:58,875 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:29:58,875 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:29:58,875 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:29:58,875 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:29:59,921 INFO L197 IcfgInterpreter]: Interpreting procedure avg with input of size 10 for LOIs [2024-11-13 23:29:59,955 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:30:22,063 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1156#(and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (exists ((|v_ULTIMATE.start_main_~ret5~0#1_18| Int) (|v_ULTIMATE.start_main_~ret2~0#1_17| Int) (|v_ULTIMATE.start_main_~ret~1#1_17| Int)) (and (or (not (= |v_ULTIMATE.start_main_~ret2~0#1_17| |v_ULTIMATE.start_main_~ret~1#1_17|)) (not (= |v_ULTIMATE.start_main_~ret~1#1_17| |v_ULTIMATE.start_main_~ret5~0#1_18|))) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_17| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_18| 2147483648)) (<= |v_ULTIMATE.start_main_~ret5~0#1_18| 2147483647) (or (and (exists ((v_avg_~ret~0_80 Int)) (and (<= 2147483648 (mod (div v_avg_~ret~0_80 60) 4294967296)) (or (and (or (< 0 (+ v_avg_~ret~0_80 1)) (= (mod v_avg_~ret~0_80 60) 0)) (= (mod (div v_avg_~ret~0_80 60) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_18| 4294967296))) (and (<= (+ v_avg_~ret~0_80 1) 0) (not (= (mod v_avg_~ret~0_80 60) 0)) (= (mod (+ (div v_avg_~ret~0_80 60) 1) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_18| 4294967296))) (and (<= (+ v_avg_~ret~0_80 1) 0) (= (mod (+ (div v_avg_~ret~0_80 60) 1) 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_18|) (not (= (mod v_avg_~ret~0_80 60) 0)))))) (exists ((|v_#memory_int_53| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_53| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_53| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236)))))) (and (exists ((|v_#memory_int_53| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_53| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_53| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))))) (exists ((v_avg_~ret~0_80 Int)) (and (<= (mod (div v_avg_~ret~0_80 60) 4294967296) 2147483647) (or (and (= (mod (div v_avg_~ret~0_80 60) 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_18|) (or (< 0 (+ v_avg_~ret~0_80 1)) (= (mod v_avg_~ret~0_80 60) 0))) (and (<= (+ v_avg_~ret~0_80 1) 0) (not (= (mod v_avg_~ret~0_80 60) 0)) (= (mod (+ (div v_avg_~ret~0_80 60) 1) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_18| 4294967296))) (and (<= (+ v_avg_~ret~0_80 1) 0) (= (mod (+ (div v_avg_~ret~0_80 60) 1) 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_18|) (not (= (mod v_avg_~ret~0_80 60) 0)))))))) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_17| 2147483648)) (<= |v_ULTIMATE.start_main_~ret2~0#1_17| 2147483647) (<= |v_ULTIMATE.start_main_~ret~1#1_17| 2147483647))))' at error location [2024-11-13 23:30:22,064 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-13 23:30:22,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 23:30:22,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 7] total 14 [2024-11-13 23:30:22,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454353420] [2024-11-13 23:30:22,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 23:30:22,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 23:30:22,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:30:22,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 23:30:22,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=565, Unknown=12, NotChecked=0, Total=702 [2024-11-13 23:30:22,066 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-13 23:30:22,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:30:22,121 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2024-11-13 23:30:22,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 23:30:22,122 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 37 [2024-11-13 23:30:22,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:30:22,122 INFO L225 Difference]: With dead ends: 49 [2024-11-13 23:30:22,122 INFO L226 Difference]: Without dead ends: 31 [2024-11-13 23:30:22,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 22.2s TimeCoverageRelationStatistics Valid=125, Invalid=565, Unknown=12, NotChecked=0, Total=702 [2024-11-13 23:30:22,124 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 23:30:22,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 23:30:22,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-13 23:30:22,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-13 23:30:22,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 23:30:22,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2024-11-13 23:30:22,128 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 37 [2024-11-13 23:30:22,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:30:22,129 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2024-11-13 23:30:22,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-13 23:30:22,129 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2024-11-13 23:30:22,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-13 23:30:22,130 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:30:22,130 INFO L215 NwaCegarLoop]: trace histogram [12, 10, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:30:22,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 23:30:22,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:30:22,331 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:30:22,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:30:22,331 INFO L85 PathProgramCache]: Analyzing trace with hash -705702, now seen corresponding path program 4 times [2024-11-13 23:30:22,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:30:22,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112916722] [2024-11-13 23:30:22,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:30:22,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:30:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:30:22,738 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-13 23:30:22,739 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:30:22,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112916722] [2024-11-13 23:30:22,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112916722] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:30:22,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991999258] [2024-11-13 23:30:22,739 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 23:30:22,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:30:22,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:30:22,742 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:30:22,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 23:30:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:30:22,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 23:30:22,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:30:22,891 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-13 23:30:22,891 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:30:23,143 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-13 23:30:23,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991999258] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:30:23,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [397880558] [2024-11-13 23:30:23,145 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-13 23:30:23,145 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:30:23,145 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:30:23,146 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:30:23,146 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:30:23,587 INFO L197 IcfgInterpreter]: Interpreting procedure avg with input of size 10 for LOIs [2024-11-13 23:30:23,619 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:30:53,056 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1592#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~ret2~0#1_19| Int) (|v_ULTIMATE.start_main_~ret5~0#1_20| Int) (|v_ULTIMATE.start_main_~ret~1#1_19| Int)) (and (or (and (exists ((v_avg_~ret~0_109 Int)) (and (or (= |v_ULTIMATE.start_main_~ret5~0#1_20| (mod (div v_avg_~ret~0_109 60) 4294967296)) (= (+ |v_ULTIMATE.start_main_~ret5~0#1_20| 4294967296) (mod (div v_avg_~ret~0_109 60) 4294967296))) (or (= (mod v_avg_~ret~0_109 60) 0) (< 0 (+ v_avg_~ret~0_109 1))))) (exists ((|v_#memory_int_75| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_75| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_75| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236)))))) (and (exists ((|v_#memory_int_75| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_75| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_75| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))))) (exists ((v_avg_~ret~0_109 Int)) (and (<= (+ v_avg_~ret~0_109 1) 0) (or (= (+ |v_ULTIMATE.start_main_~ret5~0#1_20| 4294967296) (mod (+ (div v_avg_~ret~0_109 60) 1) 4294967296)) (= |v_ULTIMATE.start_main_~ret5~0#1_20| (mod (+ (div v_avg_~ret~0_109 60) 1) 4294967296))) (not (= (mod v_avg_~ret~0_109 60) 0)))))) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_19| 2147483648)) (<= |v_ULTIMATE.start_main_~ret5~0#1_20| 2147483647) (<= |v_ULTIMATE.start_main_~ret~1#1_19| 2147483647) (<= |v_ULTIMATE.start_main_~ret2~0#1_19| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_20| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_19| 2147483648)) (or (not (= |v_ULTIMATE.start_main_~ret2~0#1_19| |v_ULTIMATE.start_main_~ret~1#1_19|)) (not (= |v_ULTIMATE.start_main_~ret~1#1_19| |v_ULTIMATE.start_main_~ret5~0#1_20|))))) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0))' at error location [2024-11-13 23:30:53,056 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-13 23:30:53,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 23:30:53,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 25 [2024-11-13 23:30:53,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497997544] [2024-11-13 23:30:53,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 23:30:53,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 23:30:53,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:30:53,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 23:30:53,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=354, Invalid=1036, Unknown=16, NotChecked=0, Total=1406 [2024-11-13 23:30:53,059 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-13 23:30:53,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:30:53,125 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2024-11-13 23:30:53,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-13 23:30:53,126 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 44 [2024-11-13 23:30:53,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:30:53,126 INFO L225 Difference]: With dead ends: 62 [2024-11-13 23:30:53,126 INFO L226 Difference]: Without dead ends: 43 [2024-11-13 23:30:53,127 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 29.7s TimeCoverageRelationStatistics Valid=354, Invalid=1036, Unknown=16, NotChecked=0, Total=1406 [2024-11-13 23:30:53,128 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:30:53,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 23:30:53,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-13 23:30:53,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-11-13 23:30:53,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 23:30:53,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2024-11-13 23:30:53,134 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 44 [2024-11-13 23:30:53,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:30:53,134 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2024-11-13 23:30:53,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-13 23:30:53,134 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2024-11-13 23:30:53,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-13 23:30:53,135 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:30:53,135 INFO L215 NwaCegarLoop]: trace histogram [22, 12, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:30:53,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 23:30:53,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:30:53,340 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:30:53,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:30:53,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1028164698, now seen corresponding path program 5 times [2024-11-13 23:30:53,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:30:53,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826630588] [2024-11-13 23:30:53,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:30:53,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:30:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:30:54,234 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-13 23:30:54,234 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:30:54,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826630588] [2024-11-13 23:30:54,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826630588] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:30:54,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614046937] [2024-11-13 23:30:54,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 23:30:54,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:30:54,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:30:54,238 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:30:54,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 23:30:54,399 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 23:30:54,399 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 23:30:54,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 23:30:54,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:30:54,549 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2024-11-13 23:30:54,549 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:30:54,687 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2024-11-13 23:30:54,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614046937] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:30:54,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [333654656] [2024-11-13 23:30:54,689 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-13 23:30:54,690 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:30:54,690 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:30:54,690 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:30:54,690 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:30:55,501 INFO L197 IcfgInterpreter]: Interpreting procedure avg with input of size 10 for LOIs [2024-11-13 23:30:55,528 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:31:19,202 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2160#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~ret~1#1_20| Int) (|v_ULTIMATE.start_main_~ret5~0#1_22| Int) (|v_ULTIMATE.start_main_~ret2~0#1_20| Int)) (and (or (not (= |v_ULTIMATE.start_main_~ret2~0#1_20| |v_ULTIMATE.start_main_~ret~1#1_20|)) (not (= |v_ULTIMATE.start_main_~ret~1#1_20| |v_ULTIMATE.start_main_~ret5~0#1_22|))) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_22| 2147483648)) (<= |v_ULTIMATE.start_main_~ret5~0#1_22| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_20| 2147483648)) (or (and (exists ((|v_#memory_int_83| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_83| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_83| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))))) (exists ((v_avg_~ret~0_143 Int)) (and (<= 2147483648 (mod (+ (div v_avg_~ret~0_143 60) 1) 4294967296)) (or (and (<= (+ v_avg_~ret~0_143 1) 0) (= (mod (+ (div v_avg_~ret~0_143 60) 1) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_22| 4294967296)) (not (= (mod v_avg_~ret~0_143 60) 0))) (and (= |v_ULTIMATE.start_main_~ret5~0#1_22| (mod (div v_avg_~ret~0_143 60) 4294967296)) (or (= (mod v_avg_~ret~0_143 60) 0) (< 0 (+ v_avg_~ret~0_143 1)))) (and (or (= (mod v_avg_~ret~0_143 60) 0) (< 0 (+ v_avg_~ret~0_143 1))) (= (+ |v_ULTIMATE.start_main_~ret5~0#1_22| 4294967296) (mod (div v_avg_~ret~0_143 60) 4294967296))))))) (and (exists ((|v_#memory_int_83| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_83| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_83| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))))) (exists ((v_avg_~ret~0_143 Int)) (and (<= (mod (+ (div v_avg_~ret~0_143 60) 1) 4294967296) 2147483647) (or (and (= (mod (+ (div v_avg_~ret~0_143 60) 1) 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_22|) (<= (+ v_avg_~ret~0_143 1) 0) (not (= (mod v_avg_~ret~0_143 60) 0))) (and (= |v_ULTIMATE.start_main_~ret5~0#1_22| (mod (div v_avg_~ret~0_143 60) 4294967296)) (or (= (mod v_avg_~ret~0_143 60) 0) (< 0 (+ v_avg_~ret~0_143 1)))) (and (or (= (mod v_avg_~ret~0_143 60) 0) (< 0 (+ v_avg_~ret~0_143 1))) (= (+ |v_ULTIMATE.start_main_~ret5~0#1_22| 4294967296) (mod (div v_avg_~ret~0_143 60) 4294967296)))))))) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_20| 2147483648)) (<= |v_ULTIMATE.start_main_~ret2~0#1_20| 2147483647) (<= |v_ULTIMATE.start_main_~ret~1#1_20| 2147483647))) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0))' at error location [2024-11-13 23:31:19,202 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-13 23:31:19,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 23:31:19,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 7, 7] total 35 [2024-11-13 23:31:19,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386284612] [2024-11-13 23:31:19,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 23:31:19,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-13 23:31:19,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:31:19,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-13 23:31:19,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1825, Unknown=12, NotChecked=0, Total=2256 [2024-11-13 23:31:19,206 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 23:31:19,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:31:19,286 INFO L93 Difference]: Finished difference Result 69 states and 86 transitions. [2024-11-13 23:31:19,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-13 23:31:19,286 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2024-11-13 23:31:19,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:31:19,287 INFO L225 Difference]: With dead ends: 69 [2024-11-13 23:31:19,287 INFO L226 Difference]: Without dead ends: 50 [2024-11-13 23:31:19,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=419, Invalid=1825, Unknown=12, NotChecked=0, Total=2256 [2024-11-13 23:31:19,289 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:31:19,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 23:31:19,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-13 23:31:19,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-13 23:31:19,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 45 states have internal predecessors, (48), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 23:31:19,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2024-11-13 23:31:19,296 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 56 [2024-11-13 23:31:19,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:31:19,296 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2024-11-13 23:31:19,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 23:31:19,297 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2024-11-13 23:31:19,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-13 23:31:19,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:31:19,298 INFO L215 NwaCegarLoop]: trace histogram [30, 23, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:31:19,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 23:31:19,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:31:19,499 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:31:19,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:31:19,499 INFO L85 PathProgramCache]: Analyzing trace with hash 228515910, now seen corresponding path program 6 times [2024-11-13 23:31:19,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:31:19,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192232424] [2024-11-13 23:31:19,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:31:19,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:31:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:31:20,695 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2024-11-13 23:31:20,695 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:31:20,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192232424] [2024-11-13 23:31:20,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192232424] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:31:20,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044757366] [2024-11-13 23:31:20,696 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 23:31:20,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:31:20,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:31:20,698 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:31:20,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 23:31:20,908 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 23:31:20,908 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 23:31:20,912 INFO L255 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-13 23:31:20,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:31:21,004 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2024-11-13 23:31:21,004 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:31:22,255 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2024-11-13 23:31:22,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044757366] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:31:22,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [582714703] [2024-11-13 23:31:22,258 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-13 23:31:22,259 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:31:22,259 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:31:22,260 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:31:22,260 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:31:22,731 INFO L197 IcfgInterpreter]: Interpreting procedure avg with input of size 10 for LOIs [2024-11-13 23:31:22,769 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:31:48,261 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2886#(and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (exists ((|v_ULTIMATE.start_main_~ret~1#1_22| Int) (|v_ULTIMATE.start_main_~ret2~0#1_22| Int) (|v_ULTIMATE.start_main_~ret5~0#1_24| Int)) (and (or (not (= |v_ULTIMATE.start_main_~ret2~0#1_22| |v_ULTIMATE.start_main_~ret~1#1_22|)) (not (= |v_ULTIMATE.start_main_~ret~1#1_22| |v_ULTIMATE.start_main_~ret5~0#1_24|))) (<= |v_ULTIMATE.start_main_~ret2~0#1_22| 2147483647) (<= |v_ULTIMATE.start_main_~ret~1#1_22| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_24| 2147483648)) (or (and (exists ((v_avg_~ret~0_190 Int)) (and (or (= |v_ULTIMATE.start_main_~ret5~0#1_24| (mod (+ (div v_avg_~ret~0_190 60) 1) 4294967296)) (= (+ |v_ULTIMATE.start_main_~ret5~0#1_24| 4294967296) (mod (+ (div v_avg_~ret~0_190 60) 1) 4294967296))) (<= (+ v_avg_~ret~0_190 1) 0) (not (= (mod v_avg_~ret~0_190 60) 0)))) (exists ((|v_#memory_int_118| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_118| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_118| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236)))))) (and (exists ((v_avg_~ret~0_190 Int)) (and (or (= (mod (div v_avg_~ret~0_190 60) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_24| 4294967296)) (= |v_ULTIMATE.start_main_~ret5~0#1_24| (mod (div v_avg_~ret~0_190 60) 4294967296))) (or (< 0 (+ v_avg_~ret~0_190 1)) (= (mod v_avg_~ret~0_190 60) 0)))) (exists ((|v_#memory_int_118| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_118| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_118| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))))))) (<= |v_ULTIMATE.start_main_~ret5~0#1_24| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_22| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_22| 2147483648)))))' at error location [2024-11-13 23:31:48,261 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-13 23:31:48,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 23:31:48,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 26] total 51 [2024-11-13 23:31:48,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652788770] [2024-11-13 23:31:48,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 23:31:48,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-13 23:31:48,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:31:48,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-13 23:31:48,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1329, Invalid=2689, Unknown=14, NotChecked=0, Total=4032 [2024-11-13 23:31:48,264 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 51 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-13 23:31:48,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:31:48,378 INFO L93 Difference]: Finished difference Result 100 states and 132 transitions. [2024-11-13 23:31:48,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-13 23:31:48,378 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 75 [2024-11-13 23:31:48,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:31:48,379 INFO L225 Difference]: With dead ends: 100 [2024-11-13 23:31:48,379 INFO L226 Difference]: Without dead ends: 75 [2024-11-13 23:31:48,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1070 ImplicationChecksByTransitivity, 27.1s TimeCoverageRelationStatistics Valid=1329, Invalid=2689, Unknown=14, NotChecked=0, Total=4032 [2024-11-13 23:31:48,381 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:31:48,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 23:31:48,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-13 23:31:48,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-13 23:31:48,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.042857142857143) internal successors, (73), 70 states have internal predecessors, (73), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 23:31:48,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2024-11-13 23:31:48,389 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 75 [2024-11-13 23:31:48,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:31:48,390 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2024-11-13 23:31:48,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-13 23:31:48,390 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2024-11-13 23:31:48,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-13 23:31:48,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:31:48,391 INFO L215 NwaCegarLoop]: trace histogram [48, 30, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:31:48,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 23:31:48,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:31:48,596 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:31:48,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:31:48,597 INFO L85 PathProgramCache]: Analyzing trace with hash -2007825190, now seen corresponding path program 7 times [2024-11-13 23:31:48,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:31:48,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430401846] [2024-11-13 23:31:48,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:31:48,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:31:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:31:51,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2024-11-13 23:31:51,154 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:31:51,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430401846] [2024-11-13 23:31:51,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430401846] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:31:51,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970936210] [2024-11-13 23:31:51,154 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 23:31:51,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:31:51,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:31:51,156 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:31:51,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 23:31:51,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:31:51,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-13 23:31:51,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:31:51,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2024-11-13 23:31:51,469 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:31:53,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2024-11-13 23:31:53,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970936210] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:31:53,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [82182364] [2024-11-13 23:31:53,155 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-13 23:31:53,155 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:31:53,156 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:31:53,156 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:31:53,156 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:31:53,423 INFO L197 IcfgInterpreter]: Interpreting procedure avg with input of size 10 for LOIs [2024-11-13 23:31:53,494 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:32:21,628 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3886#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~ret2~0#1_24| Int) (|v_ULTIMATE.start_main_~ret~1#1_24| Int) (|v_ULTIMATE.start_main_~ret5~0#1_26| Int)) (and (or (and (exists ((v_avg_~ret~0_237 Int)) (and (<= (+ v_avg_~ret~0_237 1) 0) (not (= (mod v_avg_~ret~0_237 60) 0)) (or (= (+ |v_ULTIMATE.start_main_~ret5~0#1_26| 4294967296) (mod (+ (div v_avg_~ret~0_237 60) 1) 4294967296)) (= |v_ULTIMATE.start_main_~ret5~0#1_26| (mod (+ (div v_avg_~ret~0_237 60) 1) 4294967296))))) (exists ((|v_#memory_int_178| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_178| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_178| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236)))))) (and (exists ((|v_#memory_int_178| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_178| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_178| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))))) (exists ((v_avg_~ret~0_237 Int)) (and (or (= (mod (div v_avg_~ret~0_237 60) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_26| 4294967296)) (= |v_ULTIMATE.start_main_~ret5~0#1_26| (mod (div v_avg_~ret~0_237 60) 4294967296))) (or (< 0 (+ v_avg_~ret~0_237 1)) (= (mod v_avg_~ret~0_237 60) 0)))))) (or (not (= |v_ULTIMATE.start_main_~ret~1#1_24| |v_ULTIMATE.start_main_~ret5~0#1_26|)) (not (= |v_ULTIMATE.start_main_~ret2~0#1_24| |v_ULTIMATE.start_main_~ret~1#1_24|))) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_24| 2147483648)) (<= |v_ULTIMATE.start_main_~ret~1#1_24| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_24| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_26| 2147483648)) (<= |v_ULTIMATE.start_main_~ret5~0#1_26| 2147483647) (<= |v_ULTIMATE.start_main_~ret2~0#1_24| 2147483647))) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0))' at error location [2024-11-13 23:32:21,629 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-13 23:32:21,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 23:32:21,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50, 51] total 63 [2024-11-13 23:32:21,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524846690] [2024-11-13 23:32:21,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 23:32:21,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-13 23:32:21,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:32:21,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-13 23:32:21,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2007, Invalid=3678, Unknown=15, NotChecked=0, Total=5700 [2024-11-13 23:32:21,632 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand has 63 states, 63 states have (on average 1.2380952380952381) internal successors, (78), 63 states have internal predecessors, (78), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-13 23:32:21,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:32:21,739 INFO L93 Difference]: Finished difference Result 112 states and 131 transitions. [2024-11-13 23:32:21,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-13 23:32:21,740 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.2380952380952381) internal successors, (78), 63 states have internal predecessors, (78), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 100 [2024-11-13 23:32:21,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:32:21,741 INFO L225 Difference]: With dead ends: 112 [2024-11-13 23:32:21,741 INFO L226 Difference]: Without dead ends: 87 [2024-11-13 23:32:21,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 237 SyntacticMatches, 38 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2279 ImplicationChecksByTransitivity, 31.0s TimeCoverageRelationStatistics Valid=2007, Invalid=3678, Unknown=15, NotChecked=0, Total=5700 [2024-11-13 23:32:21,743 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:32:21,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 98 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 23:32:21,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-13 23:32:21,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-11-13 23:32:21,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 82 states have (on average 1.0365853658536586) internal successors, (85), 82 states have internal predecessors, (85), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 23:32:21,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2024-11-13 23:32:21,753 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 100 [2024-11-13 23:32:21,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:32:21,753 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2024-11-13 23:32:21,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.2380952380952381) internal successors, (78), 63 states have internal predecessors, (78), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-13 23:32:21,753 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2024-11-13 23:32:21,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-13 23:32:21,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:32:21,755 INFO L215 NwaCegarLoop]: trace histogram [60, 30, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:32:21,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 23:32:21,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 23:32:21,956 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:32:21,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:32:21,956 INFO L85 PathProgramCache]: Analyzing trace with hash -2021698086, now seen corresponding path program 8 times [2024-11-13 23:32:21,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:32:21,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74844328] [2024-11-13 23:32:21,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:32:21,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:32:22,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:32:22,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2367 backedges. 0 proven. 299 refuted. 0 times theorem prover too weak. 2068 trivial. 0 not checked. [2024-11-13 23:32:22,461 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:32:22,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74844328] [2024-11-13 23:32:22,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74844328] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:32:22,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949001892] [2024-11-13 23:32:22,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 23:32:22,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:32:22,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:32:22,464 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:32:22,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 23:32:22,649 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 23:32:22,649 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 23:32:22,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 23:32:22,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:32:22,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2367 backedges. 246 proven. 3 refuted. 0 times theorem prover too weak. 2118 trivial. 0 not checked. [2024-11-13 23:32:22,696 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:32:22,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2367 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2364 trivial. 0 not checked. [2024-11-13 23:32:22,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949001892] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:32:22,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1100259697] [2024-11-13 23:32:22,769 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-13 23:32:22,771 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:32:22,771 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:32:22,771 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:32:22,772 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:32:23,207 INFO L197 IcfgInterpreter]: Interpreting procedure avg with input of size 10 for LOIs [2024-11-13 23:32:23,267 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:32:52,731 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4962#(and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (exists ((|v_ULTIMATE.start_main_~ret5~0#1_28| Int) (|v_ULTIMATE.start_main_~ret2~0#1_26| Int) (|v_ULTIMATE.start_main_~ret~1#1_25| Int)) (and (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_28| 2147483648)) (<= |v_ULTIMATE.start_main_~ret5~0#1_28| 2147483647) (or (and (exists ((v_avg_~ret~0_284 Int)) (and (or (= (+ |v_ULTIMATE.start_main_~ret5~0#1_28| 4294967296) (mod (div v_avg_~ret~0_284 60) 4294967296)) (= (mod (div v_avg_~ret~0_284 60) 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_28|)) (or (= (mod v_avg_~ret~0_284 60) 0) (< 0 (+ v_avg_~ret~0_284 1))))) (exists ((|v_#memory_int_189| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_189| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_189| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236)))))) (and (exists ((|v_#memory_int_189| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_189| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_189| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))))) (exists ((v_avg_~ret~0_284 Int)) (and (<= (+ v_avg_~ret~0_284 1) 0) (or (= (+ |v_ULTIMATE.start_main_~ret5~0#1_28| 4294967296) (mod (+ (div v_avg_~ret~0_284 60) 1) 4294967296)) (= |v_ULTIMATE.start_main_~ret5~0#1_28| (mod (+ (div v_avg_~ret~0_284 60) 1) 4294967296))) (not (= (mod v_avg_~ret~0_284 60) 0)))))) (<= |v_ULTIMATE.start_main_~ret2~0#1_26| 2147483647) (<= |v_ULTIMATE.start_main_~ret~1#1_25| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_26| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_25| 2147483648)) (or (not (= |v_ULTIMATE.start_main_~ret~1#1_25| |v_ULTIMATE.start_main_~ret5~0#1_28|)) (not (= |v_ULTIMATE.start_main_~ret2~0#1_26| |v_ULTIMATE.start_main_~ret~1#1_25|))))))' at error location [2024-11-13 23:32:52,731 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-13 23:32:52,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 23:32:52,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 19 [2024-11-13 23:32:52,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077261179] [2024-11-13 23:32:52,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 23:32:52,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 23:32:52,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:32:52,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 23:32:52,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=817, Unknown=16, NotChecked=0, Total=992 [2024-11-13 23:32:52,733 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 23:32:52,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:32:52,779 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2024-11-13 23:32:52,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 23:32:52,779 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 112 [2024-11-13 23:32:52,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:32:52,780 INFO L225 Difference]: With dead ends: 116 [2024-11-13 23:32:52,780 INFO L226 Difference]: Without dead ends: 92 [2024-11-13 23:32:52,781 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 29.6s TimeCoverageRelationStatistics Valid=159, Invalid=817, Unknown=16, NotChecked=0, Total=992 [2024-11-13 23:32:52,782 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 23:32:52,782 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 23:32:52,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-13 23:32:52,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-11-13 23:32:52,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 87 states have (on average 1.0344827586206897) internal successors, (90), 87 states have internal predecessors, (90), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 23:32:52,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2024-11-13 23:32:52,791 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 112 [2024-11-13 23:32:52,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:32:52,791 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2024-11-13 23:32:52,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 23:32:52,792 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2024-11-13 23:32:52,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-13 23:32:52,793 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:32:52,793 INFO L215 NwaCegarLoop]: trace histogram [60, 33, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:32:52,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 23:32:52,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-13 23:32:52,998 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:32:52,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:32:52,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1872729474, now seen corresponding path program 9 times [2024-11-13 23:32:52,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:32:52,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324264204] [2024-11-13 23:32:52,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:32:52,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:32:53,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:32:53,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2487 backedges. 0 proven. 356 refuted. 0 times theorem prover too weak. 2131 trivial. 0 not checked. [2024-11-13 23:32:53,566 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:32:53,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324264204] [2024-11-13 23:32:53,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324264204] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:32:53,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157829926] [2024-11-13 23:32:53,566 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 23:32:53,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:32:53,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:32:53,568 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:32:53,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 23:32:53,873 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 23:32:53,873 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 23:32:53,878 INFO L255 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 23:32:53,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:32:53,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2487 backedges. 290 proven. 66 refuted. 0 times theorem prover too weak. 2131 trivial. 0 not checked. [2024-11-13 23:32:53,923 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:32:54,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2487 backedges. 0 proven. 356 refuted. 0 times theorem prover too weak. 2131 trivial. 0 not checked. [2024-11-13 23:32:54,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157829926] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:32:54,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1513419301] [2024-11-13 23:32:54,204 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-13 23:32:54,204 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:32:54,205 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:32:54,205 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:32:54,205 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:32:55,005 INFO L197 IcfgInterpreter]: Interpreting procedure avg with input of size 10 for LOIs [2024-11-13 23:32:55,027 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:33:21,271 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6106#(and (exists ((|v_ULTIMATE.start_main_~ret5~0#1_30| Int) (|v_ULTIMATE.start_main_~ret2~0#1_28| Int) (|v_ULTIMATE.start_main_~ret~1#1_27| Int)) (and (<= |v_ULTIMATE.start_main_~ret2~0#1_28| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_27| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_30| 2147483648)) (or (not (= |v_ULTIMATE.start_main_~ret2~0#1_28| |v_ULTIMATE.start_main_~ret~1#1_27|)) (not (= |v_ULTIMATE.start_main_~ret~1#1_27| |v_ULTIMATE.start_main_~ret5~0#1_30|))) (<= |v_ULTIMATE.start_main_~ret5~0#1_30| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_28| 2147483648)) (<= |v_ULTIMATE.start_main_~ret~1#1_27| 2147483647) (or (and (exists ((v_avg_~ret~0_346 Int)) (and (<= (mod (+ (div v_avg_~ret~0_346 60) 1) 4294967296) 2147483647) (or (and (= |v_ULTIMATE.start_main_~ret5~0#1_30| (mod (div v_avg_~ret~0_346 60) 4294967296)) (or (= (mod v_avg_~ret~0_346 60) 0) (< 0 (+ v_avg_~ret~0_346 1)))) (and (= (+ |v_ULTIMATE.start_main_~ret5~0#1_30| 4294967296) (mod (div v_avg_~ret~0_346 60) 4294967296)) (or (= (mod v_avg_~ret~0_346 60) 0) (< 0 (+ v_avg_~ret~0_346 1)))) (and (= |v_ULTIMATE.start_main_~ret5~0#1_30| (mod (+ (div v_avg_~ret~0_346 60) 1) 4294967296)) (<= (+ v_avg_~ret~0_346 1) 0) (not (= (mod v_avg_~ret~0_346 60) 0)))))) (exists ((|v_#memory_int_205| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_205| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_205| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236)))))) (and (exists ((|v_#memory_int_205| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_205| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_205| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))))) (exists ((v_avg_~ret~0_346 Int)) (and (or (and (<= (+ v_avg_~ret~0_346 1) 0) (= (+ |v_ULTIMATE.start_main_~ret5~0#1_30| 4294967296) (mod (+ (div v_avg_~ret~0_346 60) 1) 4294967296)) (not (= (mod v_avg_~ret~0_346 60) 0))) (and (= |v_ULTIMATE.start_main_~ret5~0#1_30| (mod (div v_avg_~ret~0_346 60) 4294967296)) (or (= (mod v_avg_~ret~0_346 60) 0) (< 0 (+ v_avg_~ret~0_346 1)))) (and (= (+ |v_ULTIMATE.start_main_~ret5~0#1_30| 4294967296) (mod (div v_avg_~ret~0_346 60) 4294967296)) (or (= (mod v_avg_~ret~0_346 60) 0) (< 0 (+ v_avg_~ret~0_346 1))))) (<= 2147483648 (mod (+ (div v_avg_~ret~0_346 60) 1) 4294967296)))))))) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0))' at error location [2024-11-13 23:33:21,271 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-13 23:33:21,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 23:33:21,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2024-11-13 23:33:21,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983479205] [2024-11-13 23:33:21,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 23:33:21,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-13 23:33:21,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:33:21,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-13 23:33:21,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=405, Invalid=1141, Unknown=14, NotChecked=0, Total=1560 [2024-11-13 23:33:21,275 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand has 27 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 23:33:21,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:33:21,350 INFO L93 Difference]: Finished difference Result 134 states and 156 transitions. [2024-11-13 23:33:21,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 23:33:21,351 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 119 [2024-11-13 23:33:21,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:33:21,353 INFO L225 Difference]: With dead ends: 134 [2024-11-13 23:33:21,353 INFO L226 Difference]: Without dead ends: 105 [2024-11-13 23:33:21,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 26.6s TimeCoverageRelationStatistics Valid=405, Invalid=1141, Unknown=14, NotChecked=0, Total=1560 [2024-11-13 23:33:21,356 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:33:21,356 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 23:33:21,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-13 23:33:21,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-11-13 23:33:21,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 100 states have (on average 1.03) internal successors, (103), 100 states have internal predecessors, (103), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 23:33:21,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2024-11-13 23:33:21,370 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 119 [2024-11-13 23:33:21,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:33:21,370 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2024-11-13 23:33:21,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 23:33:21,371 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2024-11-13 23:33:21,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-13 23:33:21,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:33:21,373 INFO L215 NwaCegarLoop]: trace histogram [72, 60, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:33:21,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-13 23:33:21,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-13 23:33:21,578 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:33:21,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:33:21,578 INFO L85 PathProgramCache]: Analyzing trace with hash 521875418, now seen corresponding path program 10 times [2024-11-13 23:33:21,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:33:21,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989003353] [2024-11-13 23:33:21,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:33:21,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:33:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:33:23,042 INFO L134 CoverageAnalysis]: Checked inductivity of 4632 backedges. 0 proven. 1552 refuted. 0 times theorem prover too weak. 3080 trivial. 0 not checked. [2024-11-13 23:33:23,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:33:23,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989003353] [2024-11-13 23:33:23,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989003353] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:33:23,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837266340] [2024-11-13 23:33:23,043 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 23:33:23,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:33:23,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:33:23,046 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:33:23,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 23:33:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:33:23,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-13 23:33:23,423 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:33:23,485 INFO L134 CoverageAnalysis]: Checked inductivity of 4632 backedges. 1252 proven. 300 refuted. 0 times theorem prover too weak. 3080 trivial. 0 not checked. [2024-11-13 23:33:23,485 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:33:24,431 INFO L134 CoverageAnalysis]: Checked inductivity of 4632 backedges. 0 proven. 1552 refuted. 0 times theorem prover too weak. 3080 trivial. 0 not checked. [2024-11-13 23:33:24,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837266340] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:33:24,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [405088111] [2024-11-13 23:33:24,433 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-13 23:33:24,433 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:33:24,433 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:33:24,433 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:33:24,433 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:33:25,154 INFO L197 IcfgInterpreter]: Interpreting procedure avg with input of size 10 for LOIs [2024-11-13 23:33:25,176 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:33:49,535 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7572#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~ret5~0#1_32| Int) (|v_ULTIMATE.start_main_~ret~1#1_29| Int) (|v_ULTIMATE.start_main_~ret2~0#1_30| Int)) (and (or (not (= |v_ULTIMATE.start_main_~ret2~0#1_30| |v_ULTIMATE.start_main_~ret~1#1_29|)) (not (= |v_ULTIMATE.start_main_~ret~1#1_29| |v_ULTIMATE.start_main_~ret5~0#1_32|))) (<= |v_ULTIMATE.start_main_~ret~1#1_29| 2147483647) (or (and (exists ((v_avg_~ret~0_460 Int)) (and (or (and (= (mod (+ (div v_avg_~ret~0_460 60) 1) 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_32|) (<= (+ v_avg_~ret~0_460 1) 0) (not (= (mod v_avg_~ret~0_460 60) 0))) (and (= |v_ULTIMATE.start_main_~ret5~0#1_32| (mod (div v_avg_~ret~0_460 60) 4294967296)) (or (< 0 (+ v_avg_~ret~0_460 1)) (= (mod v_avg_~ret~0_460 60) 0))) (and (= (mod (+ (div v_avg_~ret~0_460 60) 1) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_32| 4294967296)) (<= (+ v_avg_~ret~0_460 1) 0) (not (= (mod v_avg_~ret~0_460 60) 0)))) (<= (mod (div v_avg_~ret~0_460 60) 4294967296) 2147483647))) (exists ((|v_#memory_int_221| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_221| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_221| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236)))))) (and (exists ((|v_#memory_int_221| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_221| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_221| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))))) (exists ((v_avg_~ret~0_460 Int)) (and (or (and (= (mod (+ (div v_avg_~ret~0_460 60) 1) 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_32|) (<= (+ v_avg_~ret~0_460 1) 0) (not (= (mod v_avg_~ret~0_460 60) 0))) (and (= (+ |v_ULTIMATE.start_main_~ret5~0#1_32| 4294967296) (mod (div v_avg_~ret~0_460 60) 4294967296)) (or (< 0 (+ v_avg_~ret~0_460 1)) (= (mod v_avg_~ret~0_460 60) 0))) (and (= (mod (+ (div v_avg_~ret~0_460 60) 1) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_32| 4294967296)) (<= (+ v_avg_~ret~0_460 1) 0) (not (= (mod v_avg_~ret~0_460 60) 0)))) (<= 2147483648 (mod (div v_avg_~ret~0_460 60) 4294967296)))))) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_32| 2147483648)) (<= |v_ULTIMATE.start_main_~ret2~0#1_30| 2147483647) (<= |v_ULTIMATE.start_main_~ret5~0#1_32| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_30| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_29| 2147483648)))) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0))' at error location [2024-11-13 23:33:49,536 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-13 23:33:49,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 23:33:49,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 53 [2024-11-13 23:33:49,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519521510] [2024-11-13 23:33:49,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 23:33:49,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-13 23:33:49,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:33:49,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-13 23:33:49,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1432, Invalid=2845, Unknown=13, NotChecked=0, Total=4290 [2024-11-13 23:33:49,540 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand has 53 states, 53 states have (on average 1.320754716981132) internal successors, (70), 53 states have internal predecessors, (70), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 23:33:49,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:33:49,660 INFO L93 Difference]: Finished difference Result 173 states and 208 transitions. [2024-11-13 23:33:49,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-13 23:33:49,661 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.320754716981132) internal successors, (70), 53 states have internal predecessors, (70), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 158 [2024-11-13 23:33:49,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:33:49,663 INFO L225 Difference]: With dead ends: 173 [2024-11-13 23:33:49,663 INFO L226 Difference]: Without dead ends: 131 [2024-11-13 23:33:49,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1114 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=1432, Invalid=2845, Unknown=13, NotChecked=0, Total=4290 [2024-11-13 23:33:49,666 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:33:49,667 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 105 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 23:33:49,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-13 23:33:49,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2024-11-13 23:33:49,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 126 states have (on average 1.0238095238095237) internal successors, (129), 126 states have internal predecessors, (129), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 23:33:49,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 135 transitions. [2024-11-13 23:33:49,677 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 135 transitions. Word has length 158 [2024-11-13 23:33:49,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:33:49,678 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 135 transitions. [2024-11-13 23:33:49,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.320754716981132) internal successors, (70), 53 states have internal predecessors, (70), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 23:33:49,678 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 135 transitions. [2024-11-13 23:33:49,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-11-13 23:33:49,681 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:33:49,681 INFO L215 NwaCegarLoop]: trace histogram [150, 60, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:33:49,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 23:33:49,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:33:49,885 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:33:49,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:33:49,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1165072678, now seen corresponding path program 11 times [2024-11-13 23:33:49,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:33:49,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036481847] [2024-11-13 23:33:49,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:33:49,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:33:50,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:33:53,171 INFO L134 CoverageAnalysis]: Checked inductivity of 13485 backedges. 0 proven. 6479 refuted. 0 times theorem prover too weak. 7006 trivial. 0 not checked. [2024-11-13 23:33:53,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:33:53,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036481847] [2024-11-13 23:33:53,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036481847] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:33:53,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134067185] [2024-11-13 23:33:53,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 23:33:53,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:33:53,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:33:53,173 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:33:53,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 23:33:53,468 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-13 23:33:53,468 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 23:33:53,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 23:33:53,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:33:53,689 INFO L134 CoverageAnalysis]: Checked inductivity of 13485 backedges. 5206 proven. 21 refuted. 0 times theorem prover too weak. 8258 trivial. 0 not checked. [2024-11-13 23:33:53,689 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:33:54,019 INFO L134 CoverageAnalysis]: Checked inductivity of 13485 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 13464 trivial. 0 not checked. [2024-11-13 23:33:54,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134067185] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:33:54,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1812841224] [2024-11-13 23:33:54,022 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-13 23:33:54,022 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:33:54,022 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:33:54,022 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:33:54,023 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:33:54,695 INFO L197 IcfgInterpreter]: Interpreting procedure avg with input of size 10 for LOIs [2024-11-13 23:33:54,718 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:34:19,907 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9650#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~ret~1#1_30| Int) (|v_ULTIMATE.start_main_~ret5~0#1_34| Int) (|v_ULTIMATE.start_main_~ret2~0#1_32| Int)) (and (<= |v_ULTIMATE.start_main_~ret2~0#1_32| 2147483647) (<= |v_ULTIMATE.start_main_~ret5~0#1_34| 2147483647) (or (and (exists ((v_avg_~ret~0_627 Int)) (and (<= (mod (+ (div v_avg_~ret~0_627 60) 1) 4294967296) 2147483647) (or (and (or (= (mod v_avg_~ret~0_627 60) 0) (< 0 (+ v_avg_~ret~0_627 1))) (= (mod (div v_avg_~ret~0_627 60) 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_34|)) (and (not (= (mod v_avg_~ret~0_627 60) 0)) (= |v_ULTIMATE.start_main_~ret5~0#1_34| (mod (+ (div v_avg_~ret~0_627 60) 1) 4294967296)) (<= (+ v_avg_~ret~0_627 1) 0)) (and (or (= (mod v_avg_~ret~0_627 60) 0) (< 0 (+ v_avg_~ret~0_627 1))) (= (mod (div v_avg_~ret~0_627 60) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_34| 4294967296)))))) (exists ((|v_#memory_int_236| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_236| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_236| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236)))))) (and (exists ((v_avg_~ret~0_627 Int)) (and (or (and (or (= (mod v_avg_~ret~0_627 60) 0) (< 0 (+ v_avg_~ret~0_627 1))) (= (mod (div v_avg_~ret~0_627 60) 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_34|)) (and (= (mod (+ (div v_avg_~ret~0_627 60) 1) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_34| 4294967296)) (not (= (mod v_avg_~ret~0_627 60) 0)) (<= (+ v_avg_~ret~0_627 1) 0)) (and (or (= (mod v_avg_~ret~0_627 60) 0) (< 0 (+ v_avg_~ret~0_627 1))) (= (mod (div v_avg_~ret~0_627 60) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_34| 4294967296)))) (<= 2147483648 (mod (+ (div v_avg_~ret~0_627 60) 1) 4294967296)))) (exists ((|v_#memory_int_236| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_236| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_236| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))))))) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_30| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_34| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_32| 2147483648)) (or (not (= |v_ULTIMATE.start_main_~ret~1#1_30| |v_ULTIMATE.start_main_~ret5~0#1_34|)) (not (= |v_ULTIMATE.start_main_~ret2~0#1_32| |v_ULTIMATE.start_main_~ret~1#1_30|))) (<= |v_ULTIMATE.start_main_~ret~1#1_30| 2147483647))) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0))' at error location [2024-11-13 23:34:19,907 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-13 23:34:19,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 23:34:19,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 9, 9] total 67 [2024-11-13 23:34:19,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308063870] [2024-11-13 23:34:19,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 23:34:19,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-13 23:34:19,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:34:19,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-13 23:34:19,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1551, Invalid=4756, Unknown=13, NotChecked=0, Total=6320 [2024-11-13 23:34:19,910 INFO L87 Difference]: Start difference. First operand 131 states and 135 transitions. Second operand has 67 states, 67 states have (on average 1.2686567164179106) internal successors, (85), 67 states have internal predecessors, (85), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 23:34:20,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:34:20,030 INFO L93 Difference]: Finished difference Result 208 states and 226 transitions. [2024-11-13 23:34:20,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-13 23:34:20,031 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 1.2686567164179106) internal successors, (85), 67 states have internal predecessors, (85), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 236 [2024-11-13 23:34:20,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:34:20,032 INFO L225 Difference]: With dead ends: 208 [2024-11-13 23:34:20,032 INFO L226 Difference]: Without dead ends: 140 [2024-11-13 23:34:20,034 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 759 GetRequests, 681 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1640 ImplicationChecksByTransitivity, 27.0s TimeCoverageRelationStatistics Valid=1551, Invalid=4756, Unknown=13, NotChecked=0, Total=6320 [2024-11-13 23:34:20,035 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:34:20,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 85 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 23:34:20,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-13 23:34:20,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2024-11-13 23:34:20,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 135 states have (on average 1.0222222222222221) internal successors, (138), 135 states have internal predecessors, (138), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 23:34:20,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 144 transitions. [2024-11-13 23:34:20,048 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 144 transitions. Word has length 236 [2024-11-13 23:34:20,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:34:20,049 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 144 transitions. [2024-11-13 23:34:20,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 1.2686567164179106) internal successors, (85), 67 states have internal predecessors, (85), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 23:34:20,049 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 144 transitions. [2024-11-13 23:34:20,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2024-11-13 23:34:20,052 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:34:20,052 INFO L215 NwaCegarLoop]: trace histogram [153, 60, 14, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:34:20,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 23:34:20,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 23:34:20,253 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:34:20,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:34:20,254 INFO L85 PathProgramCache]: Analyzing trace with hash 438771074, now seen corresponding path program 12 times [2024-11-13 23:34:20,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:34:20,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293140779] [2024-11-13 23:34:20,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:34:20,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:34:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:34:23,249 INFO L134 CoverageAnalysis]: Checked inductivity of 14031 backedges. 0 proven. 6736 refuted. 0 times theorem prover too weak. 7295 trivial. 0 not checked. [2024-11-13 23:34:23,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:34:23,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293140779] [2024-11-13 23:34:23,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293140779] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:34:23,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682859177] [2024-11-13 23:34:23,250 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 23:34:23,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:34:23,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:34:23,251 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:34:23,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 23:34:23,806 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 23:34:23,806 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 23:34:23,815 INFO L255 TraceCheckSpWp]: Trace formula consists of 1523 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-13 23:34:23,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:34:23,953 INFO L134 CoverageAnalysis]: Checked inductivity of 14031 backedges. 5410 proven. 1326 refuted. 0 times theorem prover too weak. 7295 trivial. 0 not checked. [2024-11-13 23:34:23,953 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:34:26,481 INFO L134 CoverageAnalysis]: Checked inductivity of 14031 backedges. 0 proven. 6736 refuted. 0 times theorem prover too weak. 7295 trivial. 0 not checked. [2024-11-13 23:34:26,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682859177] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:34:26,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1281725571] [2024-11-13 23:34:26,483 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-13 23:34:26,484 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:34:26,484 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:34:26,484 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:34:26,484 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:34:26,927 INFO L197 IcfgInterpreter]: Interpreting procedure avg with input of size 10 for LOIs [2024-11-13 23:34:26,956 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:34:49,146 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11878#(and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (exists ((|v_ULTIMATE.start_main_~ret~1#1_32| Int) (|v_ULTIMATE.start_main_~ret2~0#1_34| Int) (|v_ULTIMATE.start_main_~ret5~0#1_36| Int)) (and (or (not (= |v_ULTIMATE.start_main_~ret2~0#1_34| |v_ULTIMATE.start_main_~ret~1#1_32|)) (not (= |v_ULTIMATE.start_main_~ret~1#1_32| |v_ULTIMATE.start_main_~ret5~0#1_36|))) (<= |v_ULTIMATE.start_main_~ret5~0#1_36| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_34| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_32| 2147483648)) (or (and (exists ((|v_#memory_int_260| (Array Int (Array Int Int)))) (= (store |v_#memory_int_260| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_260| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))) |#memory_int|)) (exists ((v_avg_~ret~0_849 Int)) (and (or (= (mod (+ (div v_avg_~ret~0_849 60) 1) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_36| 4294967296)) (= (mod (+ (div v_avg_~ret~0_849 60) 1) 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_36|)) (not (= (mod v_avg_~ret~0_849 60) 0)) (<= (+ v_avg_~ret~0_849 1) 0)))) (and (exists ((v_avg_~ret~0_849 Int)) (and (or (= |v_ULTIMATE.start_main_~ret5~0#1_36| (mod (div v_avg_~ret~0_849 60) 4294967296)) (= (mod (div v_avg_~ret~0_849 60) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_36| 4294967296))) (or (= (mod v_avg_~ret~0_849 60) 0) (< 0 (+ v_avg_~ret~0_849 1))))) (exists ((|v_#memory_int_260| (Array Int (Array Int Int)))) (= (store |v_#memory_int_260| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_260| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))) |#memory_int|)))) (<= |v_ULTIMATE.start_main_~ret2~0#1_34| 2147483647) (<= |v_ULTIMATE.start_main_~ret~1#1_32| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_36| 2147483648)))))' at error location [2024-11-13 23:34:49,146 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-13 23:34:49,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 23:34:49,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 63 [2024-11-13 23:34:49,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610309636] [2024-11-13 23:34:49,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 23:34:49,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-13 23:34:49,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:34:49,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-13 23:34:49,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2001, Invalid=3673, Unknown=26, NotChecked=0, Total=5700 [2024-11-13 23:34:49,151 INFO L87 Difference]: Start difference. First operand 140 states and 144 transitions. Second operand has 63 states, 63 states have (on average 1.2857142857142858) internal successors, (81), 63 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 23:34:49,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:34:49,286 INFO L93 Difference]: Finished difference Result 226 states and 244 transitions. [2024-11-13 23:34:49,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-13 23:34:49,287 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.2857142857142858) internal successors, (81), 63 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 247 [2024-11-13 23:34:49,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:34:49,289 INFO L225 Difference]: With dead ends: 226 [2024-11-13 23:34:49,289 INFO L226 Difference]: Without dead ends: 149 [2024-11-13 23:34:49,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 793 GetRequests, 675 SyntacticMatches, 44 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2419 ImplicationChecksByTransitivity, 25.9s TimeCoverageRelationStatistics Valid=2001, Invalid=3673, Unknown=26, NotChecked=0, Total=5700 [2024-11-13 23:34:49,292 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:34:49,293 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 23:34:49,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-13 23:34:49,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2024-11-13 23:34:49,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 144 states have (on average 1.0208333333333333) internal successors, (147), 144 states have internal predecessors, (147), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 23:34:49,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 153 transitions. [2024-11-13 23:34:49,307 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 153 transitions. Word has length 247 [2024-11-13 23:34:49,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:34:49,307 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 153 transitions. [2024-11-13 23:34:49,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.2857142857142858) internal successors, (81), 63 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 23:34:49,308 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 153 transitions. [2024-11-13 23:34:49,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-11-13 23:34:49,310 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:34:49,310 INFO L215 NwaCegarLoop]: trace histogram [180, 60, 14, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:34:49,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 23:34:49,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:34:49,515 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:34:49,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:34:49,515 INFO L85 PathProgramCache]: Analyzing trace with hash -462327846, now seen corresponding path program 13 times [2024-11-13 23:34:49,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:34:49,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912027081] [2024-11-13 23:34:49,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:34:49,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:34:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:34:50,738 INFO L134 CoverageAnalysis]: Checked inductivity of 18594 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 18489 trivial. 0 not checked. [2024-11-13 23:34:50,738 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:34:50,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912027081] [2024-11-13 23:34:50,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912027081] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:34:50,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043348851] [2024-11-13 23:34:50,739 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 23:34:50,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:34:50,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:34:50,741 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:34:50,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 23:34:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:34:51,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 1658 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 23:34:51,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:34:51,479 INFO L134 CoverageAnalysis]: Checked inductivity of 18594 backedges. 7446 proven. 105 refuted. 0 times theorem prover too weak. 11043 trivial. 0 not checked. [2024-11-13 23:34:51,480 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:34:51,949 INFO L134 CoverageAnalysis]: Checked inductivity of 18594 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 18489 trivial. 0 not checked. [2024-11-13 23:34:51,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043348851] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:34:51,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1502775731] [2024-11-13 23:34:51,951 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-13 23:34:51,951 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:34:51,951 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:34:51,951 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:34:51,951 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:34:52,295 INFO L197 IcfgInterpreter]: Interpreting procedure avg with input of size 10 for LOIs [2024-11-13 23:34:52,340 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:35:13,918 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14292#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~ret2~0#1_36| Int) (|v_ULTIMATE.start_main_~ret~1#1_33| Int) (|v_ULTIMATE.start_main_~ret5~0#1_38| Int)) (and (or (and (exists ((v_avg_~ret~0_1046 Int)) (and (or (= (mod (+ (div v_avg_~ret~0_1046 60) 1) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_38| 4294967296)) (= |v_ULTIMATE.start_main_~ret5~0#1_38| (mod (+ (div v_avg_~ret~0_1046 60) 1) 4294967296))) (<= (+ v_avg_~ret~0_1046 1) 0) (not (= (mod v_avg_~ret~0_1046 60) 0)))) (exists ((|v_#memory_int_283| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_283| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_283| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236)))))) (and (exists ((v_avg_~ret~0_1046 Int)) (and (or (= (mod v_avg_~ret~0_1046 60) 0) (< 0 (+ v_avg_~ret~0_1046 1))) (or (= |v_ULTIMATE.start_main_~ret5~0#1_38| (mod (div v_avg_~ret~0_1046 60) 4294967296)) (= (mod (div v_avg_~ret~0_1046 60) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_38| 4294967296))))) (exists ((|v_#memory_int_283| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_283| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_283| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))))))) (<= |v_ULTIMATE.start_main_~ret2~0#1_36| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_33| 2147483648)) (<= |v_ULTIMATE.start_main_~ret~1#1_33| 2147483647) (<= |v_ULTIMATE.start_main_~ret5~0#1_38| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_38| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_36| 2147483648)) (or (not (= |v_ULTIMATE.start_main_~ret2~0#1_36| |v_ULTIMATE.start_main_~ret~1#1_33|)) (not (= |v_ULTIMATE.start_main_~ret~1#1_33| |v_ULTIMATE.start_main_~ret5~0#1_38|))))) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0))' at error location [2024-11-13 23:35:13,918 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-13 23:35:13,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 23:35:13,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2024-11-13 23:35:13,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822195177] [2024-11-13 23:35:13,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 23:35:13,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-13 23:35:13,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:35:13,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-13 23:35:13,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=582, Invalid=1476, Unknown=12, NotChecked=0, Total=2070 [2024-11-13 23:35:13,920 INFO L87 Difference]: Start difference. First operand 149 states and 153 transitions. Second operand has 33 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 33 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 23:35:13,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:35:13,977 INFO L93 Difference]: Finished difference Result 233 states and 253 transitions. [2024-11-13 23:35:13,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-13 23:35:13,979 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 33 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 274 [2024-11-13 23:35:13,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:35:13,981 INFO L225 Difference]: With dead ends: 233 [2024-11-13 23:35:13,981 INFO L226 Difference]: Without dead ends: 165 [2024-11-13 23:35:13,981 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 837 GetRequests, 793 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 22.2s TimeCoverageRelationStatistics Valid=582, Invalid=1476, Unknown=12, NotChecked=0, Total=2070 [2024-11-13 23:35:13,982 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 23:35:13,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 23:35:13,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-13 23:35:13,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2024-11-13 23:35:13,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 160 states have (on average 1.01875) internal successors, (163), 160 states have internal predecessors, (163), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 23:35:13,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 169 transitions. [2024-11-13 23:35:13,993 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 169 transitions. Word has length 274 [2024-11-13 23:35:13,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:35:13,994 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 169 transitions. [2024-11-13 23:35:13,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 33 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 23:35:13,994 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 169 transitions. [2024-11-13 23:35:13,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-11-13 23:35:13,996 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:35:13,996 INFO L215 NwaCegarLoop]: trace histogram [180, 60, 30, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:35:14,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 23:35:14,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:35:14,197 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:35:14,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:35:14,197 INFO L85 PathProgramCache]: Analyzing trace with hash 186401754, now seen corresponding path program 14 times [2024-11-13 23:35:14,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:35:14,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028099966] [2024-11-13 23:35:14,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:35:14,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:35:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:35:15,940 INFO L134 CoverageAnalysis]: Checked inductivity of 18954 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 18489 trivial. 0 not checked. [2024-11-13 23:35:15,940 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:35:15,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028099966] [2024-11-13 23:35:15,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028099966] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:35:15,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963695831] [2024-11-13 23:35:15,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 23:35:15,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:35:15,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:35:15,942 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:35:15,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 23:35:24,628 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-11-13 23:35:24,628 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 23:35:24,641 INFO L255 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-13 23:35:24,647 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:35:24,759 INFO L134 CoverageAnalysis]: Checked inductivity of 18954 backedges. 7506 proven. 465 refuted. 0 times theorem prover too weak. 10983 trivial. 0 not checked. [2024-11-13 23:35:24,759 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:35:27,011 INFO L134 CoverageAnalysis]: Checked inductivity of 18954 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 18489 trivial. 0 not checked. [2024-11-13 23:35:27,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963695831] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:35:27,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1049422561] [2024-11-13 23:35:27,013 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-13 23:35:27,013 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:35:27,014 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:35:27,014 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:35:27,014 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:35:27,850 INFO L197 IcfgInterpreter]: Interpreting procedure avg with input of size 10 for LOIs [2024-11-13 23:35:27,898 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:35:50,823 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16880#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~ret~1#1_34| Int) (|v_ULTIMATE.start_main_~ret5~0#1_40| Int) (|v_ULTIMATE.start_main_~ret2~0#1_38| Int)) (and (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_38| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_40| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_34| 2147483648)) (<= |v_ULTIMATE.start_main_~ret5~0#1_40| 2147483647) (<= |v_ULTIMATE.start_main_~ret2~0#1_38| 2147483647) (<= |v_ULTIMATE.start_main_~ret~1#1_34| 2147483647) (or (not (= |v_ULTIMATE.start_main_~ret2~0#1_38| |v_ULTIMATE.start_main_~ret~1#1_34|)) (not (= |v_ULTIMATE.start_main_~ret~1#1_34| |v_ULTIMATE.start_main_~ret5~0#1_40|))) (or (and (exists ((v_avg_~ret~0_1243 Int)) (and (<= 2147483648 (mod (+ (div v_avg_~ret~0_1243 60) 1) 4294967296)) (or (and (not (= (mod v_avg_~ret~0_1243 60) 0)) (= (+ |v_ULTIMATE.start_main_~ret5~0#1_40| 4294967296) (mod (+ (div v_avg_~ret~0_1243 60) 1) 4294967296)) (<= (+ v_avg_~ret~0_1243 1) 0)) (and (= (+ |v_ULTIMATE.start_main_~ret5~0#1_40| 4294967296) (mod (div v_avg_~ret~0_1243 60) 4294967296)) (or (= (mod v_avg_~ret~0_1243 60) 0) (< 0 (+ v_avg_~ret~0_1243 1)))) (and (or (= (mod v_avg_~ret~0_1243 60) 0) (< 0 (+ v_avg_~ret~0_1243 1))) (= |v_ULTIMATE.start_main_~ret5~0#1_40| (mod (div v_avg_~ret~0_1243 60) 4294967296)))))) (exists ((|v_#memory_int_322| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_322| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_322| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236)))))) (and (exists ((v_avg_~ret~0_1243 Int)) (and (or (and (not (= (mod v_avg_~ret~0_1243 60) 0)) (<= (+ v_avg_~ret~0_1243 1) 0) (= |v_ULTIMATE.start_main_~ret5~0#1_40| (mod (+ (div v_avg_~ret~0_1243 60) 1) 4294967296))) (and (= (+ |v_ULTIMATE.start_main_~ret5~0#1_40| 4294967296) (mod (div v_avg_~ret~0_1243 60) 4294967296)) (or (= (mod v_avg_~ret~0_1243 60) 0) (< 0 (+ v_avg_~ret~0_1243 1)))) (and (or (= (mod v_avg_~ret~0_1243 60) 0) (< 0 (+ v_avg_~ret~0_1243 1))) (= |v_ULTIMATE.start_main_~ret5~0#1_40| (mod (div v_avg_~ret~0_1243 60) 4294967296)))) (<= (mod (+ (div v_avg_~ret~0_1243 60) 1) 4294967296) 2147483647))) (exists ((|v_#memory_int_322| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_322| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_322| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))))))))) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0))' at error location [2024-11-13 23:35:50,824 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-13 23:35:50,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 23:35:50,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 34, 33] total 63 [2024-11-13 23:35:50,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613897432] [2024-11-13 23:35:50,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 23:35:50,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-13 23:35:50,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:35:50,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-13 23:35:50,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1941, Invalid=3735, Unknown=24, NotChecked=0, Total=5700 [2024-11-13 23:35:50,828 INFO L87 Difference]: Start difference. First operand 165 states and 169 transitions. Second operand has 63 states, 63 states have (on average 1.253968253968254) internal successors, (79), 63 states have internal predecessors, (79), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 23:35:50,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:35:50,977 INFO L93 Difference]: Finished difference Result 262 states and 295 transitions. [2024-11-13 23:35:50,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-13 23:35:50,978 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.253968253968254) internal successors, (79), 63 states have internal predecessors, (79), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 290 [2024-11-13 23:35:50,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:35:50,980 INFO L225 Difference]: With dead ends: 262 [2024-11-13 23:35:50,980 INFO L226 Difference]: Without dead ends: 194 [2024-11-13 23:35:50,981 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 901 GetRequests, 824 SyntacticMatches, 3 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1402 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=1941, Invalid=3735, Unknown=24, NotChecked=0, Total=5700 [2024-11-13 23:35:50,982 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:35:50,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 23:35:50,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-13 23:35:50,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2024-11-13 23:35:50,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 189 states have (on average 1.0158730158730158) internal successors, (192), 189 states have internal predecessors, (192), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 23:35:50,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 198 transitions. [2024-11-13 23:35:51,000 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 198 transitions. Word has length 290 [2024-11-13 23:35:51,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:35:51,000 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 198 transitions. [2024-11-13 23:35:51,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.253968253968254) internal successors, (79), 63 states have internal predecessors, (79), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 23:35:51,001 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 198 transitions. [2024-11-13 23:35:51,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2024-11-13 23:35:51,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:35:51,003 INFO L215 NwaCegarLoop]: trace histogram [180, 60, 59, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:35:51,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 23:35:51,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1ad6d-d13b-425d-ab78-a8c7813967a7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 23:35:51,208 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:35:51,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:35:51,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1886315822, now seen corresponding path program 15 times [2024-11-13 23:35:51,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:35:51,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599901324] [2024-11-13 23:35:51,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:35:51,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:38:25,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat