./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/avg10-2.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_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/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_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/reducercommutativity/avg10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/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_b7dae5c0-f482-4067-9db2-b64862fec39a/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 431bc26901e3cf271c74e4f10a5bc241d4509dbbafd99aaf0126c46ffc8b7c33 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:45:30,218 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:45:30,320 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 03:45:30,331 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:45:30,331 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:45:30,378 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:45:30,379 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:45:30,379 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:45:30,380 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:45:30,380 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:45:30,380 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:45:30,381 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:45:30,381 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:45:30,381 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:45:30,382 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:45:30,382 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:45:30,383 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:45:30,383 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:45:30,384 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:45:30,384 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:45:30,384 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:45:30,384 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:45:30,385 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:45:30,385 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 03:45:30,385 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:45:30,385 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:45:30,385 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:45:30,385 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:45:30,385 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 03:45:30,385 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:45:30,385 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 03:45:30,385 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:45:30,386 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:45:30,386 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 03:45:30,386 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:45:30,386 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:45:30,386 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:45:30,386 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:45:30,386 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:45:30,386 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:45:30,386 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:45:30,386 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 03:45:30,387 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:45:30,387 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:45:30,388 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:45:30,389 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:45:30,389 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:45:30,389 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_b7dae5c0-f482-4067-9db2-b64862fec39a/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 -> 431bc26901e3cf271c74e4f10a5bc241d4509dbbafd99aaf0126c46ffc8b7c33 [2024-11-14 03:45:30,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:45:30,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:45:30,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:45:30,808 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:45:30,810 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:45:30,812 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/reducercommutativity/avg10-2.i Unable to find full path for "g++" [2024-11-14 03:45:32,827 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:45:33,123 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:45:33,124 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/sv-benchmarks/c/reducercommutativity/avg10-2.i [2024-11-14 03:45:33,144 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/data/496730ecb/ae993078fe6b4335aa215af8802f087e/FLAG439b30e82 [2024-11-14 03:45:33,179 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/data/496730ecb/ae993078fe6b4335aa215af8802f087e [2024-11-14 03:45:33,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:45:33,183 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:45:33,185 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:45:33,185 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:45:33,191 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:45:33,192 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:45:33" (1/1) ... [2024-11-14 03:45:33,193 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@589be95f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:45:33, skipping insertion in model container [2024-11-14 03:45:33,193 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:45:33" (1/1) ... [2024-11-14 03:45:33,212 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:45:33,430 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_b7dae5c0-f482-4067-9db2-b64862fec39a/sv-benchmarks/c/reducercommutativity/avg10-2.i[1282,1295] [2024-11-14 03:45:33,434 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:45:33,447 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:45:33,485 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_b7dae5c0-f482-4067-9db2-b64862fec39a/sv-benchmarks/c/reducercommutativity/avg10-2.i[1282,1295] [2024-11-14 03:45:33,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:45:33,521 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:45:33,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:45:33 WrapperNode [2024-11-14 03:45:33,522 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:45:33,523 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:45:33,524 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:45:33,524 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:45:33,533 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:45:33" (1/1) ... [2024-11-14 03:45:33,542 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:45:33" (1/1) ... [2024-11-14 03:45:33,570 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2024-11-14 03:45:33,571 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:45:33,572 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:45:33,572 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:45:33,573 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:45:33,581 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:45:33" (1/1) ... [2024-11-14 03:45:33,581 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:45:33" (1/1) ... [2024-11-14 03:45:33,583 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:45:33" (1/1) ... [2024-11-14 03:45:33,585 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:45:33" (1/1) ... [2024-11-14 03:45:33,594 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:45:33" (1/1) ... [2024-11-14 03:45:33,602 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:45:33" (1/1) ... [2024-11-14 03:45:33,603 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:45:33" (1/1) ... [2024-11-14 03:45:33,607 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:45:33" (1/1) ... [2024-11-14 03:45:33,609 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:45:33,614 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:45:33,614 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:45:33,614 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:45:33,615 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:45:33" (1/1) ... [2024-11-14 03:45:33,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:45:33,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:45:33,659 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:45:33,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:45:33,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:45:33,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 03:45:33,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 03:45:33,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 03:45:33,701 INFO L130 BoogieDeclarations]: Found specification of procedure avg [2024-11-14 03:45:33,701 INFO L138 BoogieDeclarations]: Found implementation of procedure avg [2024-11-14 03:45:33,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:45:33,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:45:33,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 03:45:33,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 03:45:33,790 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:45:33,793 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:45:33,983 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-14 03:45:33,983 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:45:34,039 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:45:34,039 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-14 03:45:34,040 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:45:34 BoogieIcfgContainer [2024-11-14 03:45:34,040 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:45:34,043 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:45:34,043 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:45:34,049 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:45:34,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:45:33" (1/3) ... [2024-11-14 03:45:34,050 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e9a7896 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:45:34, skipping insertion in model container [2024-11-14 03:45:34,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:45:33" (2/3) ... [2024-11-14 03:45:34,051 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e9a7896 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:45:34, skipping insertion in model container [2024-11-14 03:45:34,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:45:34" (3/3) ... [2024-11-14 03:45:34,053 INFO L112 eAbstractionObserver]: Analyzing ICFG avg10-2.i [2024-11-14 03:45:34,071 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:45:34,073 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG avg10-2.i that has 2 procedures, 17 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-14 03:45:34,136 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:45:34,151 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;@6d48dde6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:45:34,151 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 03:45:34,156 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) [2024-11-14 03:45:34,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-14 03:45:34,166 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:45:34,167 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:45:34,167 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:45:34,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:45:34,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1031124826, now seen corresponding path program 1 times [2024-11-14 03:45:34,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:45:34,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140082555] [2024-11-14 03:45:34,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:45:34,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:45:34,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:45:34,524 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 03:45:34,524 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:45:34,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140082555] [2024-11-14 03:45:34,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140082555] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:45:34,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:45:34,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:45:34,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882243990] [2024-11-14 03:45:34,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:45:34,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:45:34,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:45:34,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:45:34,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:45:34,558 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) [2024-11-14 03:45:34,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:45:34,639 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2024-11-14 03:45:34,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:45:34,642 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 [2024-11-14 03:45:34,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:45:34,649 INFO L225 Difference]: With dead ends: 33 [2024-11-14 03:45:34,650 INFO L226 Difference]: Without dead ends: 16 [2024-11-14 03:45:34,653 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 [2024-11-14 03:45:34,657 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 [2024-11-14 03:45:34,658 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] [2024-11-14 03:45:34,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-14 03:45:34,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-14 03:45:34,693 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) [2024-11-14 03:45:34,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2024-11-14 03:45:34,699 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 20 [2024-11-14 03:45:34,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:45:34,699 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2024-11-14 03:45:34,700 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) [2024-11-14 03:45:34,700 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2024-11-14 03:45:34,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 03:45:34,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:45:34,702 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:45:34,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 03:45:34,702 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:45:34,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:45:34,703 INFO L85 PathProgramCache]: Analyzing trace with hash 456899398, now seen corresponding path program 1 times [2024-11-14 03:45:34,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:45:34,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803282058] [2024-11-14 03:45:34,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:45:34,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:45:34,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:45:34,977 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 03:45:34,978 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:45:34,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803282058] [2024-11-14 03:45:34,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803282058] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:45:34,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365919716] [2024-11-14 03:45:34,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:45:34,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:45:34,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:45:34,984 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:45:34,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 03:45:35,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:45:35,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 03:45:35,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:45:35,201 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 03:45:35,206 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:45:35,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365919716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:45:35,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:45:35,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-14 03:45:35,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547322864] [2024-11-14 03:45:35,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:45:35,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:45:35,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:45:35,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:45:35,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:45:35,213 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) [2024-11-14 03:45:35,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:45:35,246 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2024-11-14 03:45:35,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:45:35,248 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 [2024-11-14 03:45:35,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:45:35,249 INFO L225 Difference]: With dead ends: 29 [2024-11-14 03:45:35,250 INFO L226 Difference]: Without dead ends: 17 [2024-11-14 03:45:35,250 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 [2024-11-14 03:45:35,253 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 [2024-11-14 03:45:35,254 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] [2024-11-14 03:45:35,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-14 03:45:35,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-14 03:45:35,262 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) [2024-11-14 03:45:35,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2024-11-14 03:45:35,263 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 21 [2024-11-14 03:45:35,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:45:35,264 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2024-11-14 03:45:35,265 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) [2024-11-14 03:45:35,265 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2024-11-14 03:45:35,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 03:45:35,266 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:45:35,266 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:45:35,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 03:45:35,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:45:35,471 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:45:35,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:45:35,472 INFO L85 PathProgramCache]: Analyzing trace with hash 288247062, now seen corresponding path program 1 times [2024-11-14 03:45:35,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:45:35,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212432366] [2024-11-14 03:45:35,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:45:35,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:45:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:45:35,677 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-14 03:45:35,678 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:45:35,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212432366] [2024-11-14 03:45:35,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212432366] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:45:35,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276264578] [2024-11-14 03:45:35,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:45:35,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:45:35,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:45:35,684 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:45:35,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 03:45:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:45:35,788 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 03:45:35,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:45:35,806 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 03:45:35,806 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:45:35,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276264578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:45:35,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:45:35,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-14 03:45:35,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857795046] [2024-11-14 03:45:35,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:45:35,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:45:35,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:45:35,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:45:35,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:45:35,808 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) [2024-11-14 03:45:35,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:45:35,832 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2024-11-14 03:45:35,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:45:35,834 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 [2024-11-14 03:45:35,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:45:35,835 INFO L225 Difference]: With dead ends: 27 [2024-11-14 03:45:35,835 INFO L226 Difference]: Without dead ends: 18 [2024-11-14 03:45:35,835 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 [2024-11-14 03:45:35,838 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 [2024-11-14 03:45:35,840 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] [2024-11-14 03:45:35,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-14 03:45:35,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-14 03:45:35,847 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) [2024-11-14 03:45:35,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-11-14 03:45:35,849 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 24 [2024-11-14 03:45:35,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:45:35,851 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-11-14 03:45:35,851 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) [2024-11-14 03:45:35,852 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-11-14 03:45:35,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-14 03:45:35,853 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:45:35,853 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:45:35,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 03:45:36,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:45:36,054 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:45:36,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:45:36,055 INFO L85 PathProgramCache]: Analyzing trace with hash -27654738, now seen corresponding path program 1 times [2024-11-14 03:45:36,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:45:36,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585535109] [2024-11-14 03:45:36,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:45:36,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:45:36,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:45:36,221 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 03:45:36,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:45:36,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585535109] [2024-11-14 03:45:36,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585535109] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:45:36,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388838877] [2024-11-14 03:45:36,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:45:36,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:45:36,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:45:36,225 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:45:36,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 03:45:36,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:45:36,389 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 03:45:36,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:45:36,439 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 03:45:36,440 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:45:36,511 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 03:45:36,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388838877] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:45:36,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [13692576] [2024-11-14 03:45:36,539 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 03:45:36,539 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:45:36,543 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:45:36,548 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:45:36,549 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:45:39,877 INFO L197 IcfgInterpreter]: Interpreting procedure avg with input of size 10 for LOIs [2024-11-14 03:45:39,943 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:46:02,656 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '533#(and (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_avg_~ret~0_29 Int)) (and (<= 2147483648 (mod (+ (div v_avg_~ret~0_29 10) 1) 4294967296)) (or (and (= (mod (div v_avg_~ret~0_29 10) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_14| 4294967296)) (or (< 0 (+ v_avg_~ret~0_29 1)) (= (mod v_avg_~ret~0_29 10) 0))) (and (= (mod (+ (div v_avg_~ret~0_29 10) 1) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_14| 4294967296)) (<= (+ v_avg_~ret~0_29 1) 0) (not (= (mod v_avg_~ret~0_29 10) 0))) (and (= (mod (div v_avg_~ret~0_29 10) 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_14|) (or (< 0 (+ v_avg_~ret~0_29 1)) (= (mod v_avg_~ret~0_29 10) 0)))))) (exists ((|v_#memory_int_30| (Array Int (Array Int 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|) 36 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 36))) |#memory_int|))) (and (exists ((|v_#memory_int_30| (Array Int (Array Int 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|) 36 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 36))) |#memory_int|)) (exists ((v_avg_~ret~0_29 Int)) (and (or (and (= (mod (div v_avg_~ret~0_29 10) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_14| 4294967296)) (or (< 0 (+ v_avg_~ret~0_29 1)) (= (mod v_avg_~ret~0_29 10) 0))) (and (<= (+ v_avg_~ret~0_29 1) 0) (not (= (mod v_avg_~ret~0_29 10) 0)) (= |v_ULTIMATE.start_main_~ret5~0#1_14| (mod (+ (div v_avg_~ret~0_29 10) 1) 4294967296))) (and (= (mod (div v_avg_~ret~0_29 10) 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_14|) (or (< 0 (+ v_avg_~ret~0_29 1)) (= (mod v_avg_~ret~0_29 10) 0)))) (<= (mod (+ (div v_avg_~ret~0_29 10) 1) 4294967296) 2147483647))))) (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)))) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0))' at error location [2024-11-14 03:46:02,656 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:46:02,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:46:02,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2024-11-14 03:46:02,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207874787] [2024-11-14 03:46:02,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:46:02,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 03:46:02,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:46:02,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 03:46:02,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=293, Unknown=12, NotChecked=0, Total=380 [2024-11-14 03:46:02,659 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) [2024-11-14 03:46:02,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:46:02,693 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2024-11-14 03:46:02,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:46:02,694 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 [2024-11-14 03:46:02,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:46:02,694 INFO L225 Difference]: With dead ends: 36 [2024-11-14 03:46:02,694 INFO L226 Difference]: Without dead ends: 21 [2024-11-14 03:46:02,695 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 22.7s TimeCoverageRelationStatistics Valid=75, Invalid=293, Unknown=12, NotChecked=0, Total=380 [2024-11-14 03:46:02,696 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 [2024-11-14 03:46:02,697 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] [2024-11-14 03:46:02,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-14 03:46:02,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-14 03:46:02,705 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) [2024-11-14 03:46:02,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-11-14 03:46:02,708 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 25 [2024-11-14 03:46:02,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:46:02,708 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-11-14 03:46:02,708 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) [2024-11-14 03:46:02,709 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-11-14 03:46:02,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-14 03:46:02,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:46:02,711 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:46:02,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-14 03:46:02,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:46:02,915 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:46:02,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:46:02,916 INFO L85 PathProgramCache]: Analyzing trace with hash -2073955646, now seen corresponding path program 2 times [2024-11-14 03:46:02,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:46:02,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041208997] [2024-11-14 03:46:02,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:46:02,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:46:02,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:46:03,077 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-14 03:46:03,077 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:46:03,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041208997] [2024-11-14 03:46:03,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041208997] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:46:03,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314795478] [2024-11-14 03:46:03,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:46:03,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:46:03,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:46:03,082 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:46:03,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 03:46:03,179 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-14 03:46:03,180 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:46:03,184 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 03:46:03,188 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:46:03,207 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-14 03:46:03,207 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:46:03,250 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-14 03:46:03,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314795478] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:46:03,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1720985245] [2024-11-14 03:46:03,254 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 03:46:03,255 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:46:03,255 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:46:03,255 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:46:03,255 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:46:03,950 INFO L197 IcfgInterpreter]: Interpreting procedure avg with input of size 10 for LOIs [2024-11-14 03:46:04,034 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:46:23,553 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) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_15| 2147483648)) (<= |v_ULTIMATE.start_main_~ret5~0#1_16| 2147483647) (or (and (exists ((v_avg_~ret~0_51 Int)) (and (or (= (mod (+ (div v_avg_~ret~0_51 10) 1) 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_16|) (= (mod (+ (div v_avg_~ret~0_51 10) 1) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_16| 4294967296))) (not (= (mod v_avg_~ret~0_51 10) 0)) (<= (+ v_avg_~ret~0_51 1) 0))) (exists ((|v_#memory_int_38| (Array Int (Array Int Int)))) (= |#memory_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|) 36 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 36)))))) (and (exists ((|v_#memory_int_38| (Array Int (Array Int Int)))) (= |#memory_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|) 36 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 36))))) (exists ((v_avg_~ret~0_51 Int)) (and (or (< 0 (+ v_avg_~ret~0_51 1)) (= (mod v_avg_~ret~0_51 10) 0)) (or (= (mod (div v_avg_~ret~0_51 10) 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_16|) (= (mod (div v_avg_~ret~0_51 10) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_16| 4294967296))))))) (<= |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 [2024-11-14 03:46:23,554 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:46:23,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:46:23,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-14 03:46:23,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705176274] [2024-11-14 03:46:23,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:46:23,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 03:46:23,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:46:23,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 03:46:23,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=287, Unknown=24, NotChecked=0, Total=380 [2024-11-14 03:46:23,558 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) [2024-11-14 03:46:23,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:46:23,584 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2024-11-14 03:46:23,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:46:23,585 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 [2024-11-14 03:46:23,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:46:23,585 INFO L225 Difference]: With dead ends: 38 [2024-11-14 03:46:23,585 INFO L226 Difference]: Without dead ends: 24 [2024-11-14 03:46:23,586 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 19.5s TimeCoverageRelationStatistics Valid=69, Invalid=287, Unknown=24, NotChecked=0, Total=380 [2024-11-14 03:46:23,587 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 [2024-11-14 03:46:23,587 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] [2024-11-14 03:46:23,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-14 03:46:23,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-14 03:46:23,592 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) [2024-11-14 03:46:23,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-11-14 03:46:23,594 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 28 [2024-11-14 03:46:23,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:46:23,594 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-11-14 03:46:23,594 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) [2024-11-14 03:46:23,595 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-11-14 03:46:23,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-14 03:46:23,596 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:46:23,596 INFO L215 NwaCegarLoop]: trace histogram [12, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:46:23,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 03:46:23,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:46:23,799 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:46:23,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:46:23,800 INFO L85 PathProgramCache]: Analyzing trace with hash -791207506, now seen corresponding path program 3 times [2024-11-14 03:46:23,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:46:23,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42413884] [2024-11-14 03:46:23,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:46:23,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:46:23,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:46:23,963 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-14 03:46:23,963 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:46:23,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42413884] [2024-11-14 03:46:23,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42413884] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:46:23,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074387212] [2024-11-14 03:46:23,964 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 03:46:23,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:46:23,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:46:23,966 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:46:23,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 03:46:24,068 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 03:46:24,068 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:46:24,070 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 03:46:24,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:46:24,118 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-14 03:46:24,118 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:46:24,229 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-14 03:46:24,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074387212] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:46:24,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1149920640] [2024-11-14 03:46:24,231 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 03:46:24,231 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:46:24,231 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:46:24,232 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:46:24,234 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:46:24,804 INFO L197 IcfgInterpreter]: Interpreting procedure avg with input of size 10 for LOIs [2024-11-14 03:46:24,879 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:46:46,455 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1156#(and (<= 1 |#StackHeapBarrier|) (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|))) (or (and (exists ((|v_#memory_int_49| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_49| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_49| |ULTIMATE.start_main_~#x~0#1.base|) 36 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 36))))) (exists ((v_avg_~ret~0_85 Int)) (and (or (< 0 (+ v_avg_~ret~0_85 1)) (= (mod v_avg_~ret~0_85 10) 0)) (or (= (mod (div v_avg_~ret~0_85 10) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_18| 4294967296)) (= (mod (div v_avg_~ret~0_85 10) 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_18|))))) (and (exists ((|v_#memory_int_49| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_49| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_49| |ULTIMATE.start_main_~#x~0#1.base|) 36 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 36))))) (exists ((v_avg_~ret~0_85 Int)) (and (<= (+ v_avg_~ret~0_85 1) 0) (or (= |v_ULTIMATE.start_main_~ret5~0#1_18| (mod (+ (div v_avg_~ret~0_85 10) 1) 4294967296)) (= (+ |v_ULTIMATE.start_main_~ret5~0#1_18| 4294967296) (mod (+ (div v_avg_~ret~0_85 10) 1) 4294967296))) (not (= (mod v_avg_~ret~0_85 10) 0)))))) (<= 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) (<= 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))) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0))' at error location [2024-11-14 03:46:46,455 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:46:46,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:46:46,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-14 03:46:46,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212566396] [2024-11-14 03:46:46,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:46:46,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-14 03:46:46,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:46:46,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-14 03:46:46,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=558, Unknown=25, NotChecked=0, Total=702 [2024-11-14 03:46:46,458 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, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-14 03:46:46,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:46:46,509 INFO L93 Difference]: Finished difference Result 48 states and 64 transitions. [2024-11-14 03:46:46,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-14 03:46:46,510 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, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 37 [2024-11-14 03:46:46,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:46:46,511 INFO L225 Difference]: With dead ends: 48 [2024-11-14 03:46:46,511 INFO L226 Difference]: Without dead ends: 31 [2024-11-14 03:46:46,512 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 21.7s TimeCoverageRelationStatistics Valid=119, Invalid=558, Unknown=25, NotChecked=0, Total=702 [2024-11-14 03:46:46,512 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:46:46,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:46:46,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-14 03:46:46,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-14 03:46:46,517 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) [2024-11-14 03:46:46,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2024-11-14 03:46:46,518 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 37 [2024-11-14 03:46:46,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:46:46,519 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2024-11-14 03:46:46,519 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, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-14 03:46:46,519 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2024-11-14 03:46:46,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-14 03:46:46,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:46:46,520 INFO L215 NwaCegarLoop]: trace histogram [30, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:46:46,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 03:46:46,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:46:46,725 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:46:46,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:46:46,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1822532646, now seen corresponding path program 4 times [2024-11-14 03:46:46,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:46:46,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937775169] [2024-11-14 03:46:46,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:46:46,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:46:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:46:47,036 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2024-11-14 03:46:47,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:46:47,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937775169] [2024-11-14 03:46:47,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937775169] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:46:47,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70594755] [2024-11-14 03:46:47,038 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 03:46:47,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:46:47,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:46:47,041 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:46:47,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 03:46:47,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:46:47,184 INFO L255 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 03:46:47,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:46:47,211 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2024-11-14 03:46:47,213 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:46:47,319 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2024-11-14 03:46:47,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70594755] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:46:47,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2078629223] [2024-11-14 03:46:47,321 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 03:46:47,322 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:46:47,323 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:46:47,323 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:46:47,324 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:46:48,328 INFO L197 IcfgInterpreter]: Interpreting procedure avg with input of size 10 for LOIs [2024-11-14 03:46:48,391 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:47:12,679 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1650#(and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (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 (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_19| 2147483648)) (or (and (exists ((v_avg_~ret~0_132 Int)) (and (<= (mod (+ (div v_avg_~ret~0_132 10) 1) 4294967296) 2147483647) (or (and (or (< 0 (+ v_avg_~ret~0_132 1)) (= (mod v_avg_~ret~0_132 10) 0)) (= (mod (div v_avg_~ret~0_132 10) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_20| 4294967296))) (and (not (= (mod v_avg_~ret~0_132 10) 0)) (<= (+ v_avg_~ret~0_132 1) 0) (= (mod (+ (div v_avg_~ret~0_132 10) 1) 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_20|)) (and (or (< 0 (+ v_avg_~ret~0_132 1)) (= (mod v_avg_~ret~0_132 10) 0)) (= (mod (div v_avg_~ret~0_132 10) 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_20|))))) (exists ((|v_#memory_int_65| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_65| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_65| |ULTIMATE.start_main_~#x~0#1.base|) 36 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 36)))))) (and (exists ((|v_#memory_int_65| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_65| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_65| |ULTIMATE.start_main_~#x~0#1.base|) 36 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 36))))) (exists ((v_avg_~ret~0_132 Int)) (and (<= 2147483648 (mod (+ (div v_avg_~ret~0_132 10) 1) 4294967296)) (or (and (not (= (mod v_avg_~ret~0_132 10) 0)) (<= (+ v_avg_~ret~0_132 1) 0) (= (mod (+ (div v_avg_~ret~0_132 10) 1) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_20| 4294967296))) (and (or (< 0 (+ v_avg_~ret~0_132 1)) (= (mod v_avg_~ret~0_132 10) 0)) (= (mod (div v_avg_~ret~0_132 10) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_20| 4294967296))) (and (or (< 0 (+ v_avg_~ret~0_132 1)) (= (mod v_avg_~ret~0_132 10) 0)) (= (mod (div v_avg_~ret~0_132 10) 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_20|))))))) (<= |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|))))))' at error location [2024-11-14 03:47:12,679 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:47:12,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:47:12,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2024-11-14 03:47:12,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915192496] [2024-11-14 03:47:12,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:47:12,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 03:47:12,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:47:12,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 03:47:12,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=505, Unknown=13, NotChecked=0, Total=650 [2024-11-14 03:47:12,682 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 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) [2024-11-14 03:47:12,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:47:12,741 INFO L93 Difference]: Finished difference Result 62 states and 75 transitions. [2024-11-14 03:47:12,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 03:47:12,742 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 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 56 [2024-11-14 03:47:12,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:47:12,743 INFO L225 Difference]: With dead ends: 62 [2024-11-14 03:47:12,743 INFO L226 Difference]: Without dead ends: 37 [2024-11-14 03:47:12,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 24.4s TimeCoverageRelationStatistics Valid=132, Invalid=505, Unknown=13, NotChecked=0, Total=650 [2024-11-14 03:47:12,745 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:47:12,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:47:12,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-14 03:47:12,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-14 03:47:12,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 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) [2024-11-14 03:47:12,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2024-11-14 03:47:12,752 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 56 [2024-11-14 03:47:12,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:47:12,752 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2024-11-14 03:47:12,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 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) [2024-11-14 03:47:12,752 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2024-11-14 03:47:12,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-14 03:47:12,754 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:47:12,754 INFO L215 NwaCegarLoop]: trace histogram [30, 10, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:47:12,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-14 03:47:12,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:47:12,955 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:47:12,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:47:12,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1377399898, now seen corresponding path program 5 times [2024-11-14 03:47:12,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:47:12,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212552879] [2024-11-14 03:47:12,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:47:12,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:47:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:47:13,237 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2024-11-14 03:47:13,238 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:47:13,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212552879] [2024-11-14 03:47:13,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212552879] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:47:13,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121118775] [2024-11-14 03:47:13,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:47:13,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:47:13,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:47:13,241 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:47:13,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 03:47:13,363 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 03:47:13,364 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:47:13,365 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:47:13,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:47:13,396 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 246 proven. 3 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2024-11-14 03:47:13,396 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:47:13,440 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2024-11-14 03:47:13,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121118775] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:47:13,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [881067788] [2024-11-14 03:47:13,442 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 03:47:13,442 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:47:13,443 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:47:13,443 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:47:13,443 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:47:13,871 INFO L197 IcfgInterpreter]: Interpreting procedure avg with input of size 10 for LOIs [2024-11-14 03:47:13,940 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:47:37,330 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2216#(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_20| Int) (|v_ULTIMATE.start_main_~ret2~0#1_21| Int) (|v_ULTIMATE.start_main_~ret5~0#1_22| Int)) (and (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_22| 2147483648)) (<= |v_ULTIMATE.start_main_~ret2~0#1_21| 2147483647) (<= |v_ULTIMATE.start_main_~ret5~0#1_22| 2147483647) (or (and (exists ((v_avg_~ret~0_179 Int)) (and (or (= (mod (div v_avg_~ret~0_179 10) 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_22|) (= (mod (div v_avg_~ret~0_179 10) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_22| 4294967296))) (or (= (mod v_avg_~ret~0_179 10) 0) (< 0 (+ v_avg_~ret~0_179 1))))) (exists ((|v_#memory_int_76| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_76| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_76| |ULTIMATE.start_main_~#x~0#1.base|) 36 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 36)))))) (and (exists ((|v_#memory_int_76| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_76| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_76| |ULTIMATE.start_main_~#x~0#1.base|) 36 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 36))))) (exists ((v_avg_~ret~0_179 Int)) (and (or (= |v_ULTIMATE.start_main_~ret5~0#1_22| (mod (+ (div v_avg_~ret~0_179 10) 1) 4294967296)) (= (+ |v_ULTIMATE.start_main_~ret5~0#1_22| 4294967296) (mod (+ (div v_avg_~ret~0_179 10) 1) 4294967296))) (<= (+ v_avg_~ret~0_179 1) 0) (not (= (mod v_avg_~ret~0_179 10) 0)))))) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_20| 2147483648)) (<= |v_ULTIMATE.start_main_~ret~1#1_20| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_21| 2147483648)) (or (not (= |v_ULTIMATE.start_main_~ret~1#1_20| |v_ULTIMATE.start_main_~ret5~0#1_22|)) (not (= |v_ULTIMATE.start_main_~ret2~0#1_21| |v_ULTIMATE.start_main_~ret~1#1_20|))))))' at error location [2024-11-14 03:47:37,331 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:47:37,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:47:37,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-14 03:47:37,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164604032] [2024-11-14 03:47:37,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:47:37,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 03:47:37,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:47:37,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 03:47:37,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=359, Unknown=13, NotChecked=0, Total=462 [2024-11-14 03:47:37,333 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 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) [2024-11-14 03:47:37,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:47:37,365 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2024-11-14 03:47:37,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 03:47:37,366 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 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 62 [2024-11-14 03:47:37,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:47:37,366 INFO L225 Difference]: With dead ends: 59 [2024-11-14 03:47:37,367 INFO L226 Difference]: Without dead ends: 41 [2024-11-14 03:47:37,367 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 23.4s TimeCoverageRelationStatistics Valid=90, Invalid=359, Unknown=13, NotChecked=0, Total=462 [2024-11-14 03:47:37,367 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:47:37,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:47:37,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-14 03:47:37,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-11-14 03:47:37,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 states have internal predecessors, (39), 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) [2024-11-14 03:47:37,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2024-11-14 03:47:37,374 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 62 [2024-11-14 03:47:37,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:47:37,374 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2024-11-14 03:47:37,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 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) [2024-11-14 03:47:37,375 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2024-11-14 03:47:37,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-14 03:47:37,379 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:47:37,379 INFO L215 NwaCegarLoop]: trace histogram [30, 10, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:47:37,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-14 03:47:37,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:47:37,579 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:47:37,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:47:37,580 INFO L85 PathProgramCache]: Analyzing trace with hash 7784794, now seen corresponding path program 6 times [2024-11-14 03:47:37,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:47:37,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611393335] [2024-11-14 03:47:37,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:47:37,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:47:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:47:37,906 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2024-11-14 03:47:37,906 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:47:37,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611393335] [2024-11-14 03:47:37,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611393335] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:47:37,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15852629] [2024-11-14 03:47:37,906 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 03:47:37,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:47:37,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:47:37,909 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:47:37,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-14 03:47:38,100 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 03:47:38,101 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:47:38,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 03:47:38,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:47:38,132 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 246 proven. 21 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2024-11-14 03:47:38,132 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:47:38,239 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2024-11-14 03:47:38,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15852629] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:47:38,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2065049583] [2024-11-14 03:47:38,241 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 03:47:38,241 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:47:38,242 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:47:38,242 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:47:38,242 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:47:38,649 INFO L197 IcfgInterpreter]: Interpreting procedure avg with input of size 10 for LOIs [2024-11-14 03:47:38,689 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:48:00,006 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2813#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~ret~1#1_21| Int) (|v_ULTIMATE.start_main_~ret2~0#1_23| Int) (|v_ULTIMATE.start_main_~ret5~0#1_24| Int)) (and (<= |v_ULTIMATE.start_main_~ret2~0#1_23| 2147483647) (or (and (exists ((|v_#memory_int_91| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_91| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_91| |ULTIMATE.start_main_~#x~0#1.base|) 36 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 36))))) (exists ((v_avg_~ret~0_226 Int)) (and (not (= (mod v_avg_~ret~0_226 10) 0)) (or (= (mod (+ (div v_avg_~ret~0_226 10) 1) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_24| 4294967296)) (= |v_ULTIMATE.start_main_~ret5~0#1_24| (mod (+ (div v_avg_~ret~0_226 10) 1) 4294967296))) (<= (+ v_avg_~ret~0_226 1) 0)))) (and (exists ((|v_#memory_int_91| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_91| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_91| |ULTIMATE.start_main_~#x~0#1.base|) 36 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 36))))) (exists ((v_avg_~ret~0_226 Int)) (and (or (= (mod v_avg_~ret~0_226 10) 0) (< 0 (+ v_avg_~ret~0_226 1))) (or (= (mod (div v_avg_~ret~0_226 10) 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_24|) (= (mod (div v_avg_~ret~0_226 10) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_24| 4294967296))))))) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_23| 2147483648)) (<= |v_ULTIMATE.start_main_~ret~1#1_21| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_24| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_21| 2147483648)) (<= |v_ULTIMATE.start_main_~ret5~0#1_24| 2147483647) (or (not (= |v_ULTIMATE.start_main_~ret2~0#1_23| |v_ULTIMATE.start_main_~ret~1#1_21|)) (not (= |v_ULTIMATE.start_main_~ret~1#1_21| |v_ULTIMATE.start_main_~ret5~0#1_24|))))) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0))' at error location [2024-11-14 03:48:00,006 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:48:00,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:48:00,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-14 03:48:00,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574849118] [2024-11-14 03:48:00,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:48:00,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-14 03:48:00,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:48:00,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-14 03:48:00,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=468, Unknown=12, NotChecked=0, Total=600 [2024-11-14 03:48:00,008 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 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) [2024-11-14 03:48:00,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:48:00,041 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2024-11-14 03:48:00,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 03:48:00,041 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 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 66 [2024-11-14 03:48:00,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:48:00,042 INFO L225 Difference]: With dead ends: 62 [2024-11-14 03:48:00,042 INFO L226 Difference]: Without dead ends: 44 [2024-11-14 03:48:00,043 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 177 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=120, Invalid=468, Unknown=12, NotChecked=0, Total=600 [2024-11-14 03:48:00,043 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:48:00,044 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:48:00,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-14 03:48:00,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-11-14 03:48:00,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 states have internal predecessors, (42), 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) [2024-11-14 03:48:00,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2024-11-14 03:48:00,049 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 66 [2024-11-14 03:48:00,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:48:00,049 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2024-11-14 03:48:00,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 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) [2024-11-14 03:48:00,049 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2024-11-14 03:48:00,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-14 03:48:00,050 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:48:00,050 INFO L215 NwaCegarLoop]: trace histogram [30, 10, 9, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:48:00,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-14 03:48:00,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7dae5c0-f482-4067-9db2-b64862fec39a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:48:00,251 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:48:00,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:48:00,251 INFO L85 PathProgramCache]: Analyzing trace with hash -242672466, now seen corresponding path program 7 times [2024-11-14 03:48:00,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:48:00,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416570764] [2024-11-14 03:48:00,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:48:00,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:48:02,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat