./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/rangesum40.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_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/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_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum40.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/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_7992eaea-5354-43e9-bfe5-bebc9f96df20/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 a418834dbd1069728d4982a06f4275da717a1d93e3d5061fbbc21c5c3a319ddf --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:59:38,276 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:59:38,391 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 04:59:38,403 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:59:38,403 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:59:38,435 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:59:38,436 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:59:38,436 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:59:38,436 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:59:38,436 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:59:38,437 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:59:38,437 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:59:38,437 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:59:38,437 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:59:38,437 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:59:38,437 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:59:38,438 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:59:38,438 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:59:38,438 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:59:38,438 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:59:38,438 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:59:38,438 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:59:38,439 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:59:38,439 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:59:38,439 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:59:38,439 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:59:38,440 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:59:38,440 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:59:38,440 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:59:38,440 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:59:38,440 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:59:38,440 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:59:38,441 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:59:38,441 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:59:38,441 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:59:38,441 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:59:38,441 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:59:38,441 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:59:38,442 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:59:38,442 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:59:38,442 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:59:38,442 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:59:38,442 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:59:38,442 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:59:38,443 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:59:38,443 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:59:38,443 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:59:38,443 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_7992eaea-5354-43e9-bfe5-bebc9f96df20/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 -> a418834dbd1069728d4982a06f4275da717a1d93e3d5061fbbc21c5c3a319ddf [2024-11-14 04:59:38,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:59:38,825 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:59:38,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:59:38,832 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:59:38,834 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:59:38,835 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/reducercommutativity/rangesum40.i Unable to find full path for "g++" [2024-11-14 04:59:40,914 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:59:41,243 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:59:41,243 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/sv-benchmarks/c/reducercommutativity/rangesum40.i [2024-11-14 04:59:41,251 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/data/b7d7e3757/0e6a70850f174540b19c481bd0dd751a/FLAG3456f6637 [2024-11-14 04:59:41,266 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/data/b7d7e3757/0e6a70850f174540b19c481bd0dd751a [2024-11-14 04:59:41,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:59:41,271 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:59:41,273 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:59:41,273 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:59:41,278 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:59:41,279 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:59:41" (1/1) ... [2024-11-14 04:59:41,280 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74bb9725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:59:41, skipping insertion in model container [2024-11-14 04:59:41,280 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:59:41" (1/1) ... [2024-11-14 04:59:41,300 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:59:41,557 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_7992eaea-5354-43e9-bfe5-bebc9f96df20/sv-benchmarks/c/reducercommutativity/rangesum40.i[1465,1478] [2024-11-14 04:59:41,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:59:41,579 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:59:41,613 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_7992eaea-5354-43e9-bfe5-bebc9f96df20/sv-benchmarks/c/reducercommutativity/rangesum40.i[1465,1478] [2024-11-14 04:59:41,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:59:41,634 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:59:41,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:59:41 WrapperNode [2024-11-14 04:59:41,639 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:59:41,640 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:59:41,641 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:59:41,641 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:59:41,650 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:59:41" (1/1) ... [2024-11-14 04:59:41,659 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:59:41" (1/1) ... [2024-11-14 04:59:41,686 INFO L138 Inliner]: procedures = 17, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2024-11-14 04:59:41,687 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:59:41,688 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:59:41,688 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:59:41,688 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:59:41,700 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:59:41" (1/1) ... [2024-11-14 04:59:41,700 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:59:41" (1/1) ... [2024-11-14 04:59:41,704 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:59:41" (1/1) ... [2024-11-14 04:59:41,704 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:59:41" (1/1) ... [2024-11-14 04:59:41,719 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:59:41" (1/1) ... [2024-11-14 04:59:41,726 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:59:41" (1/1) ... [2024-11-14 04:59:41,727 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:59:41" (1/1) ... [2024-11-14 04:59:41,728 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:59:41" (1/1) ... [2024-11-14 04:59:41,735 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:59:41,736 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:59:41,736 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:59:41,736 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:59:41,740 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:59:41" (1/1) ... [2024-11-14 04:59:41,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:59:41,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:59:41,784 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:59:41,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:59:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:59:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:59:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 04:59:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 04:59:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:59:41,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:59:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 04:59:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2024-11-14 04:59:41,817 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2024-11-14 04:59:41,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 04:59:41,896 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:59:41,901 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:59:42,195 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-14 04:59:42,195 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:59:42,308 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:59:42,308 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-14 04:59:42,309 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:59:42 BoogieIcfgContainer [2024-11-14 04:59:42,309 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:59:42,312 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:59:42,313 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:59:42,319 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:59:42,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:59:41" (1/3) ... [2024-11-14 04:59:42,320 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b13319a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:59:42, skipping insertion in model container [2024-11-14 04:59:42,320 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:59:41" (2/3) ... [2024-11-14 04:59:42,321 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b13319a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:59:42, skipping insertion in model container [2024-11-14 04:59:42,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:59:42" (3/3) ... [2024-11-14 04:59:42,322 INFO L112 eAbstractionObserver]: Analyzing ICFG rangesum40.i [2024-11-14 04:59:42,344 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:59:42,346 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG rangesum40.i that has 2 procedures, 17 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-14 04:59:42,430 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:59:42,452 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;@1dd402e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:59:42,453 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 04:59:42,458 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 04:59:42,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-14 04:59:42,469 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:59:42,470 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:59:42,470 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:59:42,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:59:42,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1044973024, now seen corresponding path program 1 times [2024-11-14 04:59:42,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:59:42,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415092120] [2024-11-14 04:59:42,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:59:42,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:59:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:59:42,976 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 04:59:42,977 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:59:42,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415092120] [2024-11-14 04:59:42,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415092120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:59:42,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:59:42,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:59:42,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534118994] [2024-11-14 04:59:42,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:59:42,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:59:42,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:59:43,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:59:43,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:59:43,009 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 04:59:43,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:59:43,073 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2024-11-14 04:59:43,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:59:43,076 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 04:59:43,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:59:43,087 INFO L225 Difference]: With dead ends: 33 [2024-11-14 04:59:43,087 INFO L226 Difference]: Without dead ends: 16 [2024-11-14 04:59:43,091 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 04:59:43,095 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:59:43,096 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:59:43,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-14 04:59:43,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-14 04:59:43,134 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 04:59:43,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2024-11-14 04:59:43,146 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 20 [2024-11-14 04:59:43,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:59:43,146 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2024-11-14 04:59:43,146 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 04:59:43,147 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2024-11-14 04:59:43,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 04:59:43,148 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:59:43,148 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 04:59:43,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 04:59:43,149 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:59:43,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:59:43,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1095982348, now seen corresponding path program 1 times [2024-11-14 04:59:43,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:59:43,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60646565] [2024-11-14 04:59:43,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:59:43,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:59:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:59:43,348 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 04:59:43,348 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:59:43,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60646565] [2024-11-14 04:59:43,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60646565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:59:43,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678346932] [2024-11-14 04:59:43,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:59:43,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:59:43,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:59:43,352 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:59:43,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 04:59:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:59:43,499 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:59:43,507 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:59:43,533 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 04:59:43,533 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:59:43,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678346932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:59:43,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:59:43,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-14 04:59:43,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217178668] [2024-11-14 04:59:43,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:59:43,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:59:43,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:59:43,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:59:43,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:59:43,537 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 04:59:43,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:59:43,569 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2024-11-14 04:59:43,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:59:43,570 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 04:59:43,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:59:43,570 INFO L225 Difference]: With dead ends: 29 [2024-11-14 04:59:43,570 INFO L226 Difference]: Without dead ends: 17 [2024-11-14 04:59:43,571 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 04:59:43,572 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 04:59:43,572 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 04:59:43,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-14 04:59:43,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-14 04:59:43,575 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 04:59:43,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2024-11-14 04:59:43,576 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 21 [2024-11-14 04:59:43,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:59:43,577 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2024-11-14 04:59:43,577 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 04:59:43,577 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2024-11-14 04:59:43,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 04:59:43,578 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:59:43,578 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 04:59:43,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 04:59:43,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:59:43,779 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:59:43,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:59:43,780 INFO L85 PathProgramCache]: Analyzing trace with hash 254755254, now seen corresponding path program 1 times [2024-11-14 04:59:43,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:59:43,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31141375] [2024-11-14 04:59:43,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:59:43,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:59:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:59:44,015 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 04:59:44,017 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:59:44,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31141375] [2024-11-14 04:59:44,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31141375] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:59:44,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400170367] [2024-11-14 04:59:44,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:59:44,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:59:44,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:59:44,024 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:59:44,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 04:59:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:59:44,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:59:44,137 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:59:44,158 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 04:59:44,159 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:59:44,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400170367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:59:44,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:59:44,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-14 04:59:44,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2412563] [2024-11-14 04:59:44,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:59:44,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:59:44,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:59:44,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:59:44,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:59:44,163 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 04:59:44,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:59:44,193 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2024-11-14 04:59:44,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:59:44,196 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 04:59:44,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:59:44,197 INFO L225 Difference]: With dead ends: 27 [2024-11-14 04:59:44,197 INFO L226 Difference]: Without dead ends: 18 [2024-11-14 04:59:44,197 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 04:59:44,198 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:59:44,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:59:44,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-14 04:59:44,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-14 04:59:44,204 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 04:59:44,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-11-14 04:59:44,206 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 24 [2024-11-14 04:59:44,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:59:44,207 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-11-14 04:59:44,208 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 04:59:44,208 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-11-14 04:59:44,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-14 04:59:44,210 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:59:44,210 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 04:59:44,230 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 04:59:44,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:59:44,414 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:59:44,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:59:44,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1151857616, now seen corresponding path program 1 times [2024-11-14 04:59:44,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:59:44,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616341558] [2024-11-14 04:59:44,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:59:44,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:59:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:59:44,585 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 04:59:44,585 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:59:44,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616341558] [2024-11-14 04:59:44,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616341558] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:59:44,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074933211] [2024-11-14 04:59:44,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:59:44,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:59:44,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:59:44,589 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:59:44,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 04:59:44,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:59:44,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 04:59:44,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:59:44,787 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 04:59:44,787 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:59:44,859 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 04:59:44,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074933211] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:59:44,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2119593852] [2024-11-14 04:59:44,887 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 04:59:44,887 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:59:44,891 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:59:44,896 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:59:44,897 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:59:50,852 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 10 for LOIs [2024-11-14 04:59:51,835 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:00:33,704 WARN L286 SmtUtils]: Spent 37.11s on a formula simplification. DAG size of input: 117 DAG size of output: 59 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:00:55,458 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '533#(and (<= 1 |#StackHeapBarrier|) (exists ((v_rangesum_~cnt~0_38 Int) (|v_ULTIMATE.start_main_~ret5~0#1_17| Int) (v_rangesum_~ret~0_38 Int) (|v_ULTIMATE.start_main_~ret2~0#1_17| Int) (|v_ULTIMATE.start_main_~ret~1#1_17| Int)) (and (or (and (= v_rangesum_~cnt~0_38 0) (= |v_ULTIMATE.start_main_~ret5~0#1_17| 0)) (and (or (and (or (= (mod v_rangesum_~ret~0_38 v_rangesum_~cnt~0_38) 0) (< 0 (+ v_rangesum_~ret~0_38 1))) (= (+ |v_ULTIMATE.start_main_~ret5~0#1_17| 4294967296) (mod (div v_rangesum_~ret~0_38 v_rangesum_~cnt~0_38) 4294967296))) (and (= (mod (+ (div v_rangesum_~ret~0_38 v_rangesum_~cnt~0_38) 1) 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_17|) (not (= (mod v_rangesum_~ret~0_38 v_rangesum_~cnt~0_38) 0)) (<= (+ v_rangesum_~ret~0_38 1) 0)) (and (= (mod (+ (div v_rangesum_~ret~0_38 v_rangesum_~cnt~0_38) 1) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_17| 4294967296)) (not (= (mod v_rangesum_~ret~0_38 v_rangesum_~cnt~0_38) 0)) (<= (+ v_rangesum_~ret~0_38 1) 0)) (and (= |v_ULTIMATE.start_main_~ret5~0#1_17| (mod (div v_rangesum_~ret~0_38 v_rangesum_~cnt~0_38) 4294967296)) (or (= (mod v_rangesum_~ret~0_38 v_rangesum_~cnt~0_38) 0) (< 0 (+ v_rangesum_~ret~0_38 1))))) (not (= v_rangesum_~cnt~0_38 0)))) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_17| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_17| 2147483648)) (<= |v_ULTIMATE.start_main_~ret5~0#1_17| 2147483647) (or (not (= |v_ULTIMATE.start_main_~ret~1#1_17| |v_ULTIMATE.start_main_~ret5~0#1_17|)) (not (= |v_ULTIMATE.start_main_~ret2~0#1_17| |v_ULTIMATE.start_main_~ret~1#1_17|))) (<= 0 v_rangesum_~cnt~0_38) (<= 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) (exists ((|v_#memory_int_33| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_33| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_33| |ULTIMATE.start_main_~#x~0#1.base|) 156 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 156))))))' at error location [2024-11-14 05:00:55,458 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:00:55,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:00:55,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2024-11-14 05:00:55,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306622892] [2024-11-14 05:00:55,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:00:55,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 05:00:55,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:00:55,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 05:00:55,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=283, Unknown=33, NotChecked=0, Total=380 [2024-11-14 05:00:55,464 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 05:00:55,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:00:55,511 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2024-11-14 05:00:55,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:00:55,512 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 05:00:55,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:00:55,512 INFO L225 Difference]: With dead ends: 36 [2024-11-14 05:00:55,513 INFO L226 Difference]: Without dead ends: 21 [2024-11-14 05:00:55,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 63.7s TimeCoverageRelationStatistics Valid=64, Invalid=283, Unknown=33, NotChecked=0, Total=380 [2024-11-14 05:00:55,515 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:00:55,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:00:55,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-14 05:00:55,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-14 05:00:55,525 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 05:00:55,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-11-14 05:00:55,528 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 25 [2024-11-14 05:00:55,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:00:55,529 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-11-14 05:00:55,529 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 05:00:55,529 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-11-14 05:00:55,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-14 05:00:55,530 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:00:55,530 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 05:00:55,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 05:00:55,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:00:55,731 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:00:55,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:00:55,731 INFO L85 PathProgramCache]: Analyzing trace with hash 627098084, now seen corresponding path program 2 times [2024-11-14 05:00:55,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:00:55,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583957343] [2024-11-14 05:00:55,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:00:55,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:00:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:00:55,929 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 05:00:55,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:00:55,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583957343] [2024-11-14 05:00:55,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583957343] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:00:55,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910846324] [2024-11-14 05:00:55,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:00:55,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:00:55,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:00:55,934 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:00:55,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 05:00:56,047 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-14 05:00:56,047 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:00:56,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 05:00:56,054 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:00:56,079 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 05:00:56,079 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:00:56,132 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 05:00:56,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910846324] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:00:56,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [899436741] [2024-11-14 05:00:56,137 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 05:00:56,138 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:00:56,139 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:00:56,139 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:00:56,139 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:00:58,358 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 10 for LOIs [2024-11-14 05:00:58,458 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:01:08,955 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_18| Int) (|v_ULTIMATE.start_main_~ret5~0#1_19| Int) (v_rangesum_~ret~0_64 Int) (v_rangesum_~cnt~0_64 Int) (|v_ULTIMATE.start_main_~ret~1#1_18| Int)) (and (or (and (= |v_ULTIMATE.start_main_~ret5~0#1_19| 0) (= v_rangesum_~cnt~0_64 0)) (and (or (and (or (= (+ |v_ULTIMATE.start_main_~ret5~0#1_19| 4294967296) (mod (div v_rangesum_~ret~0_64 v_rangesum_~cnt~0_64) 4294967296)) (= |v_ULTIMATE.start_main_~ret5~0#1_19| (mod (div v_rangesum_~ret~0_64 v_rangesum_~cnt~0_64) 4294967296))) (or (= (mod v_rangesum_~ret~0_64 v_rangesum_~cnt~0_64) 0) (< 0 (+ v_rangesum_~ret~0_64 1)))) (and (<= (+ v_rangesum_~ret~0_64 1) 0) (or (= (mod (+ 1 (div v_rangesum_~ret~0_64 v_rangesum_~cnt~0_64)) 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_19|) (= (mod (+ 1 (div v_rangesum_~ret~0_64 v_rangesum_~cnt~0_64)) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_19| 4294967296))) (not (= (mod v_rangesum_~ret~0_64 v_rangesum_~cnt~0_64) 0)))) (not (= v_rangesum_~cnt~0_64 0)))) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_19| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_18| 2147483648)) (<= |v_ULTIMATE.start_main_~ret2~0#1_18| 2147483647) (<= |v_ULTIMATE.start_main_~ret5~0#1_19| 2147483647) (<= |v_ULTIMATE.start_main_~ret~1#1_18| 2147483647) (<= 0 v_rangesum_~cnt~0_64) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_18| 2147483648)) (or (not (= |v_ULTIMATE.start_main_~ret~1#1_18| |v_ULTIMATE.start_main_~ret5~0#1_19|)) (not (= |v_ULTIMATE.start_main_~ret2~0#1_18| |v_ULTIMATE.start_main_~ret~1#1_18|))))) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (exists ((|v_#memory_int_40| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_40| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_40| |ULTIMATE.start_main_~#x~0#1.base|) 156 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 156))))))' at error location [2024-11-14 05:01:08,956 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:01:08,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:01:08,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-14 05:01:08,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785718609] [2024-11-14 05:01:08,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:01:08,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 05:01:08,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:01:08,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 05:01:08,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=285, Unknown=24, NotChecked=0, Total=380 [2024-11-14 05:01:08,958 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 05:01:08,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:01:08,989 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2024-11-14 05:01:08,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:01:08,990 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 05:01:08,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:01:08,991 INFO L225 Difference]: With dead ends: 38 [2024-11-14 05:01:08,991 INFO L226 Difference]: Without dead ends: 24 [2024-11-14 05:01:08,991 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=71, Invalid=285, Unknown=24, NotChecked=0, Total=380 [2024-11-14 05:01:08,992 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 05:01:08,993 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 05:01:08,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-14 05:01:08,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-14 05:01:08,999 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 05:01:09,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-11-14 05:01:09,000 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 28 [2024-11-14 05:01:09,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:01:09,001 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-11-14 05:01:09,001 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 05:01:09,001 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-11-14 05:01:09,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-14 05:01:09,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:01:09,002 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 05:01:09,019 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 05:01:09,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:01:09,203 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:01:09,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:01:09,203 INFO L85 PathProgramCache]: Analyzing trace with hash 997500398, now seen corresponding path program 3 times [2024-11-14 05:01:09,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:01:09,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467769728] [2024-11-14 05:01:09,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:01:09,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:01:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:01:09,347 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 05:01:09,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:01:09,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467769728] [2024-11-14 05:01:09,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467769728] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:01:09,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100521144] [2024-11-14 05:01:09,348 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:01:09,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:01:09,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:01:09,351 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:01:09,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 05:01:09,454 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:01:09,454 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:01:09,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 05:01:09,458 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:01:09,521 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-14 05:01:09,521 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:01:09,617 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-14 05:01:09,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100521144] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:01:09,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1593982073] [2024-11-14 05:01:09,620 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 05:01:09,620 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:01:09,620 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:01:09,620 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:01:09,621 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:01:11,485 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 10 for LOIs [2024-11-14 05:01:11,757 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:01:33,812 WARN L286 SmtUtils]: Spent 21.18s on a formula simplification. DAG size of input: 113 DAG size of output: 59 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:01:57,336 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1156#(and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (exists ((|v_#memory_int_54| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_54| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_54| |ULTIMATE.start_main_~#x~0#1.base|) 156 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 156))))) (exists ((v_rangesum_~ret~0_97 Int) (v_rangesum_~cnt~0_97 Int) (|v_ULTIMATE.start_main_~ret~1#1_21| Int) (|v_ULTIMATE.start_main_~ret2~0#1_21| Int) (|v_ULTIMATE.start_main_~ret5~0#1_22| Int)) (and (<= 0 v_rangesum_~cnt~0_97) (<= 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) (<= |v_ULTIMATE.start_main_~ret~1#1_21| 2147483647) (or (not (= |v_ULTIMATE.start_main_~ret2~0#1_21| |v_ULTIMATE.start_main_~ret~1#1_21|)) (not (= |v_ULTIMATE.start_main_~ret~1#1_21| |v_ULTIMATE.start_main_~ret5~0#1_22|))) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_21| 2147483648)) (or (and (or (and (= |v_ULTIMATE.start_main_~ret5~0#1_22| (mod (div v_rangesum_~ret~0_97 v_rangesum_~cnt~0_97) 4294967296)) (or (= (mod v_rangesum_~ret~0_97 v_rangesum_~cnt~0_97) 0) (< 0 (+ v_rangesum_~ret~0_97 1)))) (and (= (+ |v_ULTIMATE.start_main_~ret5~0#1_22| 4294967296) (mod (div v_rangesum_~ret~0_97 v_rangesum_~cnt~0_97) 4294967296)) (or (= (mod v_rangesum_~ret~0_97 v_rangesum_~cnt~0_97) 0) (< 0 (+ v_rangesum_~ret~0_97 1)))) (and (not (= (mod v_rangesum_~ret~0_97 v_rangesum_~cnt~0_97) 0)) (<= (+ v_rangesum_~ret~0_97 1) 0) (= (+ |v_ULTIMATE.start_main_~ret5~0#1_22| 4294967296) (mod (+ (div v_rangesum_~ret~0_97 v_rangesum_~cnt~0_97) 1) 4294967296))) (and (not (= (mod v_rangesum_~ret~0_97 v_rangesum_~cnt~0_97) 0)) (= |v_ULTIMATE.start_main_~ret5~0#1_22| (mod (+ (div v_rangesum_~ret~0_97 v_rangesum_~cnt~0_97) 1) 4294967296)) (<= (+ v_rangesum_~ret~0_97 1) 0))) (not (= v_rangesum_~cnt~0_97 0))) (and (= v_rangesum_~cnt~0_97 0) (= |v_ULTIMATE.start_main_~ret5~0#1_22| 0))) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_21| 2147483648)))))' at error location [2024-11-14 05:01:57,337 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:01:57,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:01:57,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 7] total 14 [2024-11-14 05:01:57,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729234688] [2024-11-14 05:01:57,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:01:57,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-14 05:01:57,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:01:57,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-14 05:01:57,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=559, Unknown=22, NotChecked=0, Total=702 [2024-11-14 05:01:57,339 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-14 05:01:57,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:01:57,411 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2024-11-14 05:01:57,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-14 05:01:57,412 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 37 [2024-11-14 05:01:57,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:01:57,413 INFO L225 Difference]: With dead ends: 49 [2024-11-14 05:01:57,413 INFO L226 Difference]: Without dead ends: 31 [2024-11-14 05:01:57,414 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 45.7s TimeCoverageRelationStatistics Valid=121, Invalid=559, Unknown=22, NotChecked=0, Total=702 [2024-11-14 05:01:57,415 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:01:57,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 58 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:01:57,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-14 05:01:57,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-14 05:01:57,420 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 05:01:57,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2024-11-14 05:01:57,421 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 37 [2024-11-14 05:01:57,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:01:57,421 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2024-11-14 05:01:57,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-14 05:01:57,422 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2024-11-14 05:01:57,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-14 05:01:57,423 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:01:57,423 INFO L215 NwaCegarLoop]: trace histogram [12, 10, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:01:57,446 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 05:01:57,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:01:57,624 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:01:57,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:01:57,624 INFO L85 PathProgramCache]: Analyzing trace with hash -723846688, now seen corresponding path program 4 times [2024-11-14 05:01:57,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:01:57,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823619921] [2024-11-14 05:01:57,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:01:57,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:01:57,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:01:58,200 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-14 05:01:58,200 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:01:58,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823619921] [2024-11-14 05:01:58,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823619921] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:01:58,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699197963] [2024-11-14 05:01:58,200 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:01:58,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:01:58,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:01:58,205 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:01:58,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 05:01:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:01:58,351 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:01:58,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:01:58,397 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-14 05:01:58,397 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:01:58,790 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-14 05:01:58,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699197963] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:01:58,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1996785251] [2024-11-14 05:01:58,792 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 05:01:58,792 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:01:58,793 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:01:58,793 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:01:58,793 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:01:59,815 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 10 for LOIs [2024-11-14 05:01:59,883 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:02:12,948 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1592#(and (exists ((v_rangesum_~ret~0_130 Int) (v_rangesum_~cnt~0_130 Int) (|v_ULTIMATE.start_main_~ret2~0#1_24| Int) (|v_ULTIMATE.start_main_~ret~1#1_24| Int) (|v_ULTIMATE.start_main_~ret5~0#1_25| Int)) (and (<= |v_ULTIMATE.start_main_~ret5~0#1_25| 2147483647) (or (and (or (and (or (= (+ |v_ULTIMATE.start_main_~ret5~0#1_25| 4294967296) (mod (div v_rangesum_~ret~0_130 v_rangesum_~cnt~0_130) 4294967296)) (= |v_ULTIMATE.start_main_~ret5~0#1_25| (mod (div v_rangesum_~ret~0_130 v_rangesum_~cnt~0_130) 4294967296))) (or (< 0 (+ v_rangesum_~ret~0_130 1)) (= (mod v_rangesum_~ret~0_130 v_rangesum_~cnt~0_130) 0))) (and (or (= (mod (+ (div v_rangesum_~ret~0_130 v_rangesum_~cnt~0_130) 1) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_25| 4294967296)) (= (mod (+ (div v_rangesum_~ret~0_130 v_rangesum_~cnt~0_130) 1) 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_25|)) (<= (+ v_rangesum_~ret~0_130 1) 0) (not (= (mod v_rangesum_~ret~0_130 v_rangesum_~cnt~0_130) 0)))) (not (= v_rangesum_~cnt~0_130 0))) (and (= |v_ULTIMATE.start_main_~ret5~0#1_25| 0) (= v_rangesum_~cnt~0_130 0))) (<= 0 v_rangesum_~cnt~0_130) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_24| 2147483648)) (<= |v_ULTIMATE.start_main_~ret~1#1_24| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_24| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_25| 2147483648)) (or (not (= |v_ULTIMATE.start_main_~ret~1#1_24| |v_ULTIMATE.start_main_~ret5~0#1_25|)) (not (= |v_ULTIMATE.start_main_~ret2~0#1_24| |v_ULTIMATE.start_main_~ret~1#1_24|))) (<= |v_ULTIMATE.start_main_~ret2~0#1_24| 2147483647))) (<= 1 |#StackHeapBarrier|) (exists ((|v_#memory_int_75| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_75| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_75| |ULTIMATE.start_main_~#x~0#1.base|) 156 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 156))))) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0))' at error location [2024-11-14 05:02:12,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:02:12,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:02:12,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 25 [2024-11-14 05:02:12,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445108510] [2024-11-14 05:02:12,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:02:12,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-14 05:02:12,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:02:12,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-14 05:02:12,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=1028, Unknown=28, NotChecked=0, Total=1406 [2024-11-14 05:02:12,951 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-14 05:02:13,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:02:13,039 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2024-11-14 05:02:13,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-14 05:02:13,040 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 44 [2024-11-14 05:02:13,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:02:13,040 INFO L225 Difference]: With dead ends: 62 [2024-11-14 05:02:13,041 INFO L226 Difference]: Without dead ends: 43 [2024-11-14 05:02:13,042 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=350, Invalid=1028, Unknown=28, NotChecked=0, Total=1406 [2024-11-14 05:02:13,043 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:02:13,043 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:02:13,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-14 05:02:13,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-11-14 05:02:13,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 05:02:13,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2024-11-14 05:02:13,050 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 44 [2024-11-14 05:02:13,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:02:13,051 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2024-11-14 05:02:13,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-14 05:02:13,051 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2024-11-14 05:02:13,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-14 05:02:13,052 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:02:13,053 INFO L215 NwaCegarLoop]: trace histogram [22, 12, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:02:13,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-14 05:02:13,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:02:13,257 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:02:13,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:02:13,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1657959712, now seen corresponding path program 5 times [2024-11-14 05:02:13,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:02:13,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946638209] [2024-11-14 05:02:13,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:02:13,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:02:13,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:02:14,342 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-14 05:02:14,343 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:02:14,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946638209] [2024-11-14 05:02:14,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946638209] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:02:14,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650595487] [2024-11-14 05:02:14,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:02:14,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:02:14,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:02:14,345 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:02:14,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 05:02:14,467 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 05:02:14,468 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:02:14,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 05:02:14,471 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:02:14,604 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2024-11-14 05:02:14,604 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:02:14,791 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2024-11-14 05:02:14,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650595487] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:02:14,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2062356264] [2024-11-14 05:02:14,793 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 05:02:14,793 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:02:14,794 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:02:14,794 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:02:14,794 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:02:19,103 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 10 for LOIs [2024-11-14 05:02:19,177 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:02:27,610 WARN L286 SmtUtils]: Spent 8.31s on a formula simplification. DAG size of input: 95 DAG size of output: 72 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:02:53,478 WARN L286 SmtUtils]: Spent 22.78s on a formula simplification. DAG size of input: 69 DAG size of output: 56 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:03:37,066 WARN L286 SmtUtils]: Spent 33.36s on a formula simplification. DAG size of input: 193 DAG size of output: 136 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:03:44,123 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2160#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_#memory_int_82| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_82| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_82| |ULTIMATE.start_main_~#x~0#1.base|) 156 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 156))))) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (exists ((|v_ULTIMATE.start_main_~ret2~0#1_25| Int) (v_rangesum_~ret~0_168 Int) (v_rangesum_~cnt~0_168 Int) (|v_ULTIMATE.start_main_~ret~1#1_25| Int) (|v_ULTIMATE.start_main_~ret5~0#1_27| Int)) (and (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_25| 2147483648)) (or (and (= v_rangesum_~cnt~0_168 0) (= |v_ULTIMATE.start_main_~ret5~0#1_27| 0)) (and (not (= v_rangesum_~cnt~0_168 0)) (or (and (= |v_ULTIMATE.start_main_~ret5~0#1_27| (mod (div v_rangesum_~ret~0_168 v_rangesum_~cnt~0_168) 4294967296)) (or (= (mod v_rangesum_~ret~0_168 v_rangesum_~cnt~0_168) 0) (< 0 (+ v_rangesum_~ret~0_168 1)))) (and (<= (+ v_rangesum_~ret~0_168 1) 0) (not (= (mod v_rangesum_~ret~0_168 v_rangesum_~cnt~0_168) 0)) (= (mod (+ (div v_rangesum_~ret~0_168 v_rangesum_~cnt~0_168) 1) 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_27|)) (and (= (+ |v_ULTIMATE.start_main_~ret5~0#1_27| 4294967296) (mod (div v_rangesum_~ret~0_168 v_rangesum_~cnt~0_168) 4294967296)) (or (= (mod v_rangesum_~ret~0_168 v_rangesum_~cnt~0_168) 0) (< 0 (+ v_rangesum_~ret~0_168 1)))) (and (<= (+ v_rangesum_~ret~0_168 1) 0) (= (mod (+ (div v_rangesum_~ret~0_168 v_rangesum_~cnt~0_168) 1) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_27| 4294967296)) (not (= (mod v_rangesum_~ret~0_168 v_rangesum_~cnt~0_168) 0)))))) (<= 0 v_rangesum_~cnt~0_168) (or (not (= |v_ULTIMATE.start_main_~ret~1#1_25| |v_ULTIMATE.start_main_~ret5~0#1_27|)) (not (= |v_ULTIMATE.start_main_~ret2~0#1_25| |v_ULTIMATE.start_main_~ret~1#1_25|))) (<= |v_ULTIMATE.start_main_~ret~1#1_25| 2147483647) (<= |v_ULTIMATE.start_main_~ret2~0#1_25| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_27| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_25| 2147483648)) (<= |v_ULTIMATE.start_main_~ret5~0#1_27| 2147483647))))' at error location [2024-11-14 05:03:44,123 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:03:44,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:03:44,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 7, 7] total 35 [2024-11-14 05:03:44,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435246290] [2024-11-14 05:03:44,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:03:44,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-14 05:03:44,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:03:44,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-14 05:03:44,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=1815, Unknown=26, NotChecked=0, Total=2256 [2024-11-14 05:03:44,126 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-14 05:03:44,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:03:44,227 INFO L93 Difference]: Finished difference Result 69 states and 86 transitions. [2024-11-14 05:03:44,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-14 05:03:44,227 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2024-11-14 05:03:44,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:03:44,228 INFO L225 Difference]: With dead ends: 69 [2024-11-14 05:03:44,228 INFO L226 Difference]: Without dead ends: 50 [2024-11-14 05:03:44,229 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 85.6s TimeCoverageRelationStatistics Valid=415, Invalid=1815, Unknown=26, NotChecked=0, Total=2256 [2024-11-14 05:03:44,229 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:03:44,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:03:44,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-14 05:03:44,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-14 05:03:44,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 45 states have internal predecessors, (48), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 05:03:44,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2024-11-14 05:03:44,236 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 56 [2024-11-14 05:03:44,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:03:44,237 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2024-11-14 05:03:44,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-14 05:03:44,237 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2024-11-14 05:03:44,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-14 05:03:44,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:03:44,239 INFO L215 NwaCegarLoop]: trace histogram [30, 23, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:03:44,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-14 05:03:44,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:03:44,439 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:03:44,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:03:44,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1724653428, now seen corresponding path program 6 times [2024-11-14 05:03:44,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:03:44,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120151673] [2024-11-14 05:03:44,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:03:44,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:03:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:03:45,645 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2024-11-14 05:03:45,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:03:45,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120151673] [2024-11-14 05:03:45,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120151673] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:03:45,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873798327] [2024-11-14 05:03:45,646 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:03:45,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:03:45,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:03:45,648 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:03:45,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-14 05:03:45,839 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:03:45,839 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:03:45,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-14 05:03:45,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:03:45,928 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2024-11-14 05:03:45,929 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:03:46,847 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2024-11-14 05:03:46,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873798327] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:03:46,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2016681327] [2024-11-14 05:03:46,849 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 05:03:46,849 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:03:46,849 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:03:46,849 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:03:46,849 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:03:48,509 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 10 for LOIs [2024-11-14 05:03:48,764 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:04:09,403 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2878#(and (exists ((v_rangesum_~cnt~0_219 Int) (v_rangesum_~ret~0_219 Int) (|v_ULTIMATE.start_main_~ret5~0#1_30| Int) (|v_ULTIMATE.start_main_~ret2~0#1_28| Int) (|v_ULTIMATE.start_main_~ret~1#1_28| Int)) (and (<= |v_ULTIMATE.start_main_~ret2~0#1_28| 2147483647) (<= |v_ULTIMATE.start_main_~ret~1#1_28| 2147483647) (or (not (= |v_ULTIMATE.start_main_~ret~1#1_28| |v_ULTIMATE.start_main_~ret5~0#1_30|)) (not (= |v_ULTIMATE.start_main_~ret2~0#1_28| |v_ULTIMATE.start_main_~ret~1#1_28|))) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_30| 2147483648)) (or (and (= |v_ULTIMATE.start_main_~ret5~0#1_30| 0) (= v_rangesum_~cnt~0_219 0)) (and (not (= v_rangesum_~cnt~0_219 0)) (or (and (or (= (mod v_rangesum_~ret~0_219 v_rangesum_~cnt~0_219) 0) (< 0 (+ v_rangesum_~ret~0_219 1))) (= (+ |v_ULTIMATE.start_main_~ret5~0#1_30| 4294967296) (mod (div v_rangesum_~ret~0_219 v_rangesum_~cnt~0_219) 4294967296))) (and (not (= (mod v_rangesum_~ret~0_219 v_rangesum_~cnt~0_219) 0)) (= (+ |v_ULTIMATE.start_main_~ret5~0#1_30| 4294967296) (mod (+ (div v_rangesum_~ret~0_219 v_rangesum_~cnt~0_219) 1) 4294967296)) (<= (+ v_rangesum_~ret~0_219 1) 0)) (and (not (= (mod v_rangesum_~ret~0_219 v_rangesum_~cnt~0_219) 0)) (= |v_ULTIMATE.start_main_~ret5~0#1_30| (mod (+ (div v_rangesum_~ret~0_219 v_rangesum_~cnt~0_219) 1) 4294967296)) (<= (+ v_rangesum_~ret~0_219 1) 0)) (and (or (= (mod v_rangesum_~ret~0_219 v_rangesum_~cnt~0_219) 0) (< 0 (+ v_rangesum_~ret~0_219 1))) (= |v_ULTIMATE.start_main_~ret5~0#1_30| (mod (div v_rangesum_~ret~0_219 v_rangesum_~cnt~0_219) 4294967296)))))) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_28| 2147483648)) (<= 0 v_rangesum_~cnt~0_219) (<= |v_ULTIMATE.start_main_~ret5~0#1_30| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_28| 2147483648)))) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (exists ((|v_#memory_int_116| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_116| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_116| |ULTIMATE.start_main_~#x~0#1.base|) 156 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 156))))))' at error location [2024-11-14 05:04:09,403 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:04:09,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:04:09,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 26] total 43 [2024-11-14 05:04:09,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449258529] [2024-11-14 05:04:09,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:04:09,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-14 05:04:09,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:04:09,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-14 05:04:09,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=953, Invalid=2103, Unknown=24, NotChecked=0, Total=3080 [2024-11-14 05:04:09,408 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 43 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 43 states have internal predecessors, (58), 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 05:04:09,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:04:09,613 INFO L93 Difference]: Finished difference Result 92 states and 116 transitions. [2024-11-14 05:04:09,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-14 05:04:09,614 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 43 states have internal predecessors, (58), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 75 [2024-11-14 05:04:09,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:04:09,615 INFO L225 Difference]: With dead ends: 92 [2024-11-14 05:04:09,616 INFO L226 Difference]: Without dead ends: 67 [2024-11-14 05:04:09,617 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 187 SyntacticMatches, 8 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1013 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=953, Invalid=2103, Unknown=24, NotChecked=0, Total=3080 [2024-11-14 05:04:09,618 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:04:09,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:04:09,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-14 05:04:09,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-11-14 05:04:09,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 62 states have internal predecessors, (65), 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 05:04:09,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2024-11-14 05:04:09,628 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 75 [2024-11-14 05:04:09,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:04:09,629 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2024-11-14 05:04:09,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 43 states have internal predecessors, (58), 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 05:04:09,629 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2024-11-14 05:04:09,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-14 05:04:09,631 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:04:09,631 INFO L215 NwaCegarLoop]: trace histogram [40, 30, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:04:09,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-14 05:04:09,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:04:09,831 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:04:09,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:04:09,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1034817568, now seen corresponding path program 7 times [2024-11-14 05:04:09,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:04:09,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942144136] [2024-11-14 05:04:09,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:04:09,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:04:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:04:10,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 0 proven. 299 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2024-11-14 05:04:10,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:04:10,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942144136] [2024-11-14 05:04:10,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942144136] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:04:10,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766898661] [2024-11-14 05:04:10,498 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:04:10,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:04:10,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:04:10,500 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:04:10,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-14 05:04:10,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:04:10,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:04:10,759 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:04:10,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 244 proven. 55 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2024-11-14 05:04:10,813 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:04:11,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 0 proven. 299 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2024-11-14 05:04:11,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766898661] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:04:11,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1574329205] [2024-11-14 05:04:11,217 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 05:04:11,217 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:04:11,217 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:04:11,218 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:04:11,218 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:04:16,167 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 10 for LOIs [2024-11-14 05:04:16,230 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:05:05,252 WARN L286 SmtUtils]: Spent 34.55s on a formula simplification. DAG size of input: 79 DAG size of output: 62 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:06:35,636 WARN L286 SmtUtils]: Spent 1.25m on a formula simplification. DAG size of input: 223 DAG size of output: 158 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:07:54,545 WARN L286 SmtUtils]: Spent 1.18m on a formula simplification. DAG size of input: 97 DAG size of output: 80 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:08:04,756 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3760#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~ret~1#1_30| Int) (v_rangesum_~ret~0_281 Int) (v_rangesum_~cnt~0_281 Int) (|v_ULTIMATE.start_main_~ret5~0#1_32| Int) (|v_ULTIMATE.start_main_~ret2~0#1_30| Int)) (and (<= 0 v_rangesum_~cnt~0_281) (or (and (or (and (not (= (mod v_rangesum_~ret~0_281 v_rangesum_~cnt~0_281) 0)) (= (mod (+ (div v_rangesum_~ret~0_281 v_rangesum_~cnt~0_281) 1) 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_32|) (<= (+ v_rangesum_~ret~0_281 1) 0)) (and (or (< 0 (+ v_rangesum_~ret~0_281 1)) (= (mod v_rangesum_~ret~0_281 v_rangesum_~cnt~0_281) 0)) (= |v_ULTIMATE.start_main_~ret5~0#1_32| (mod (div v_rangesum_~ret~0_281 v_rangesum_~cnt~0_281) 4294967296))) (and (or (< 0 (+ v_rangesum_~ret~0_281 1)) (= (mod v_rangesum_~ret~0_281 v_rangesum_~cnt~0_281) 0)) (= (+ |v_ULTIMATE.start_main_~ret5~0#1_32| 4294967296) (mod (div v_rangesum_~ret~0_281 v_rangesum_~cnt~0_281) 4294967296))) (and (not (= (mod v_rangesum_~ret~0_281 v_rangesum_~cnt~0_281) 0)) (= (mod (+ (div v_rangesum_~ret~0_281 v_rangesum_~cnt~0_281) 1) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_32| 4294967296)) (<= (+ v_rangesum_~ret~0_281 1) 0))) (not (= v_rangesum_~cnt~0_281 0))) (and (= v_rangesum_~cnt~0_281 0) (= |v_ULTIMATE.start_main_~ret5~0#1_32| 0))) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_30| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_32| 2147483648)) (or (not (= |v_ULTIMATE.start_main_~ret2~0#1_30| |v_ULTIMATE.start_main_~ret~1#1_30|)) (not (= |v_ULTIMATE.start_main_~ret~1#1_30| |v_ULTIMATE.start_main_~ret5~0#1_32|))) (<= |v_ULTIMATE.start_main_~ret2~0#1_30| 2147483647) (<= |v_ULTIMATE.start_main_~ret5~0#1_32| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_30| 2147483648)) (<= |v_ULTIMATE.start_main_~ret~1#1_30| 2147483647))) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (exists ((|v_#memory_int_127| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_127| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_127| |ULTIMATE.start_main_~#x~0#1.base|) 156 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 156))))))' at error location [2024-11-14 05:08:04,756 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:08:04,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:08:04,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-14 05:08:04,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998491048] [2024-11-14 05:08:04,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:08:04,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-14 05:08:04,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:08:04,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-14 05:08:04,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=1031, Unknown=32, NotChecked=0, Total=1406 [2024-11-14 05:08:04,759 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-14 05:08:04,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:08:04,823 INFO L93 Difference]: Finished difference Result 103 states and 124 transitions. [2024-11-14 05:08:04,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-14 05:08:04,823 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2024-11-14 05:08:04,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:08:04,825 INFO L225 Difference]: With dead ends: 103 [2024-11-14 05:08:04,825 INFO L226 Difference]: Without dead ends: 79 [2024-11-14 05:08:04,825 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 229.0s TimeCoverageRelationStatistics Valid=343, Invalid=1031, Unknown=32, NotChecked=0, Total=1406 [2024-11-14 05:08:04,826 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:08:04,827 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:08:04,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-14 05:08:04,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-11-14 05:08:04,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 74 states have internal predecessors, (77), 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 05:08:04,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2024-11-14 05:08:04,838 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 92 [2024-11-14 05:08:04,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:08:04,839 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2024-11-14 05:08:04,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-14 05:08:04,839 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2024-11-14 05:08:04,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-14 05:08:04,841 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:08:04,841 INFO L215 NwaCegarLoop]: trace histogram [66, 40, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:08:04,858 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-14 05:08:05,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-14 05:08:05,045 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:08:05,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:08:05,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1047373920, now seen corresponding path program 8 times [2024-11-14 05:08:05,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:08:05,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446667617] [2024-11-14 05:08:05,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:08:05,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:08:05,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:08:06,459 INFO L134 CoverageAnalysis]: Checked inductivity of 3175 backedges. 0 proven. 1313 refuted. 0 times theorem prover too weak. 1862 trivial. 0 not checked. [2024-11-14 05:08:06,460 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:08:06,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446667617] [2024-11-14 05:08:06,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446667617] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:08:06,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902588370] [2024-11-14 05:08:06,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:08:06,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:08:06,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:08:06,463 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:08:06,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-14 05:08:06,671 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 05:08:06,672 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:08:06,674 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 05:08:06,677 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:08:06,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3175 backedges. 1062 proven. 3 refuted. 0 times theorem prover too weak. 2110 trivial. 0 not checked. [2024-11-14 05:08:06,769 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:08:06,904 INFO L134 CoverageAnalysis]: Checked inductivity of 3175 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3172 trivial. 0 not checked. [2024-11-14 05:08:06,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902588370] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:08:06,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1031522701] [2024-11-14 05:08:06,907 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 05:08:06,907 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:08:06,907 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:08:06,907 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:08:06,908 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:08:07,641 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 10 for LOIs [2024-11-14 05:08:07,754 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:08:20,505 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4910#(and (exists ((|v_#memory_int_137| (Array Int (Array Int Int)))) (= (store |v_#memory_int_137| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_137| |ULTIMATE.start_main_~#x~0#1.base|) 156 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 156))) |#memory_int|)) (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~ret~1#1_31| Int) (v_rangesum_~cnt~0_368 Int) (|v_ULTIMATE.start_main_~ret2~0#1_32| Int) (v_rangesum_~ret~0_368 Int) (|v_ULTIMATE.start_main_~ret5~0#1_34| Int)) (and (<= |v_ULTIMATE.start_main_~ret2~0#1_32| 2147483647) (or (not (= |v_ULTIMATE.start_main_~ret2~0#1_32| |v_ULTIMATE.start_main_~ret~1#1_31|)) (not (= |v_ULTIMATE.start_main_~ret~1#1_31| |v_ULTIMATE.start_main_~ret5~0#1_34|))) (<= |v_ULTIMATE.start_main_~ret~1#1_31| 2147483647) (or (and (not (= v_rangesum_~cnt~0_368 0)) (or (and (or (< 0 (+ v_rangesum_~ret~0_368 1)) (= (mod v_rangesum_~ret~0_368 v_rangesum_~cnt~0_368) 0)) (or (= |v_ULTIMATE.start_main_~ret5~0#1_34| (mod (div v_rangesum_~ret~0_368 v_rangesum_~cnt~0_368) 4294967296)) (= (mod (div v_rangesum_~ret~0_368 v_rangesum_~cnt~0_368) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_34| 4294967296)))) (and (or (= |v_ULTIMATE.start_main_~ret5~0#1_34| (mod (+ (div v_rangesum_~ret~0_368 v_rangesum_~cnt~0_368) 1) 4294967296)) (= (mod (+ (div v_rangesum_~ret~0_368 v_rangesum_~cnt~0_368) 1) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_34| 4294967296))) (not (= (mod v_rangesum_~ret~0_368 v_rangesum_~cnt~0_368) 0)) (<= (+ v_rangesum_~ret~0_368 1) 0)))) (and (= v_rangesum_~cnt~0_368 0) (= |v_ULTIMATE.start_main_~ret5~0#1_34| 0))) (<= |v_ULTIMATE.start_main_~ret5~0#1_34| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_31| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_34| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_32| 2147483648)) (<= 0 v_rangesum_~cnt~0_368))) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0))' at error location [2024-11-14 05:08:20,505 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:08:20,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:08:20,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 5, 5] total 31 [2024-11-14 05:08:20,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616252455] [2024-11-14 05:08:20,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:08:20,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-14 05:08:20,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:08:20,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-14 05:08:20,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=1484, Unknown=31, NotChecked=0, Total=1892 [2024-11-14 05:08:20,508 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand has 31 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 31 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-14 05:08:20,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:08:20,603 INFO L93 Difference]: Finished difference Result 120 states and 134 transitions. [2024-11-14 05:08:20,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-14 05:08:20,604 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 31 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 128 [2024-11-14 05:08:20,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:08:20,605 INFO L225 Difference]: With dead ends: 120 [2024-11-14 05:08:20,605 INFO L226 Difference]: Without dead ends: 84 [2024-11-14 05:08:20,606 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=377, Invalid=1484, Unknown=31, NotChecked=0, Total=1892 [2024-11-14 05:08:20,607 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:08:20,607 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 109 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:08:20,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-14 05:08:20,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-14 05:08:20,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 79 states have (on average 1.0379746835443038) internal successors, (82), 79 states have internal predecessors, (82), 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 05:08:20,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2024-11-14 05:08:20,626 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 128 [2024-11-14 05:08:20,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:08:20,627 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2024-11-14 05:08:20,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 31 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-14 05:08:20,627 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2024-11-14 05:08:20,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-14 05:08:20,629 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:08:20,629 INFO L215 NwaCegarLoop]: trace histogram [69, 40, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:08:20,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-14 05:08:20,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:08:20,830 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:08:20,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:08:20,830 INFO L85 PathProgramCache]: Analyzing trace with hash 331814178, now seen corresponding path program 9 times [2024-11-14 05:08:20,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:08:20,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664253701] [2024-11-14 05:08:20,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:08:20,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:08:20,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:08:22,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 1430 refuted. 0 times theorem prover too weak. 1973 trivial. 0 not checked. [2024-11-14 05:08:22,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:08:22,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664253701] [2024-11-14 05:08:22,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664253701] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:08:22,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550582824] [2024-11-14 05:08:22,229 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:08:22,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:08:22,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:08:22,231 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:08:22,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-14 05:08:22,530 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:08:22,530 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:08:22,535 INFO L255 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-14 05:08:22,539 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:08:22,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 1154 proven. 276 refuted. 0 times theorem prover too weak. 1973 trivial. 0 not checked. [2024-11-14 05:08:22,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:08:23,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 1430 refuted. 0 times theorem prover too weak. 1973 trivial. 0 not checked. [2024-11-14 05:08:23,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550582824] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:08:23,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [396309856] [2024-11-14 05:08:23,601 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 05:08:23,601 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:08:23,602 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:08:23,602 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:08:23,602 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:08:25,303 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 10 for LOIs [2024-11-14 05:08:25,418 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:08:38,725 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6158#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_#memory_int_152| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_152| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_152| |ULTIMATE.start_main_~#x~0#1.base|) 156 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 156))))) (exists ((|v_ULTIMATE.start_main_~ret~1#1_33| Int) (v_rangesum_~ret~0_482 Int) (v_rangesum_~cnt~0_482 Int) (|v_ULTIMATE.start_main_~ret2~0#1_34| Int) (|v_ULTIMATE.start_main_~ret5~0#1_36| Int)) (and (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_33| 2147483648)) (<= |v_ULTIMATE.start_main_~ret5~0#1_36| 2147483647) (<= |v_ULTIMATE.start_main_~ret~1#1_33| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_34| 2147483648)) (or (not (= |v_ULTIMATE.start_main_~ret2~0#1_34| |v_ULTIMATE.start_main_~ret~1#1_33|)) (not (= |v_ULTIMATE.start_main_~ret~1#1_33| |v_ULTIMATE.start_main_~ret5~0#1_36|))) (<= |v_ULTIMATE.start_main_~ret2~0#1_34| 2147483647) (or (and (not (= v_rangesum_~cnt~0_482 0)) (or (and (not (= (mod v_rangesum_~ret~0_482 v_rangesum_~cnt~0_482) 0)) (<= (+ v_rangesum_~ret~0_482 1) 0) (or (= |v_ULTIMATE.start_main_~ret5~0#1_36| (mod (+ (div v_rangesum_~ret~0_482 v_rangesum_~cnt~0_482) 1) 4294967296)) (= (+ |v_ULTIMATE.start_main_~ret5~0#1_36| 4294967296) (mod (+ (div v_rangesum_~ret~0_482 v_rangesum_~cnt~0_482) 1) 4294967296)))) (and (or (< 0 (+ v_rangesum_~ret~0_482 1)) (= (mod v_rangesum_~ret~0_482 v_rangesum_~cnt~0_482) 0)) (or (= (+ |v_ULTIMATE.start_main_~ret5~0#1_36| 4294967296) (mod (div v_rangesum_~ret~0_482 v_rangesum_~cnt~0_482) 4294967296)) (= |v_ULTIMATE.start_main_~ret5~0#1_36| (mod (div v_rangesum_~ret~0_482 v_rangesum_~cnt~0_482) 4294967296)))))) (and (= v_rangesum_~cnt~0_482 0) (= |v_ULTIMATE.start_main_~ret5~0#1_36| 0))) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_36| 2147483648)) (<= 0 v_rangesum_~cnt~0_482))) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0))' at error location [2024-11-14 05:08:38,725 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:08:38,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:08:38,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 43 [2024-11-14 05:08:38,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386535630] [2024-11-14 05:08:38,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:08:38,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-14 05:08:38,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:08:38,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-14 05:08:38,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=953, Invalid=2104, Unknown=23, NotChecked=0, Total=3080 [2024-11-14 05:08:38,729 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand has 43 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 43 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-14 05:08:38,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:08:38,843 INFO L93 Difference]: Finished difference Result 142 states and 168 transitions. [2024-11-14 05:08:38,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-14 05:08:38,843 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 43 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2024-11-14 05:08:38,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:08:38,845 INFO L225 Difference]: With dead ends: 142 [2024-11-14 05:08:38,845 INFO L226 Difference]: Without dead ends: 101 [2024-11-14 05:08:38,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 367 SyntacticMatches, 8 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1016 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=953, Invalid=2104, Unknown=23, NotChecked=0, Total=3080 [2024-11-14 05:08:38,847 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:08:38,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:08:38,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-14 05:08:38,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-11-14 05:08:38,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 96 states have (on average 1.03125) internal successors, (99), 96 states have internal predecessors, (99), 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 05:08:38,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2024-11-14 05:08:38,859 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 135 [2024-11-14 05:08:38,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:08:38,859 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2024-11-14 05:08:38,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 43 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-14 05:08:38,860 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2024-11-14 05:08:38,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-11-14 05:08:38,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:08:38,863 INFO L215 NwaCegarLoop]: trace histogram [120, 40, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:08:38,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-14 05:08:39,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:08:39,063 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:08:39,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:08:39,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1836839328, now seen corresponding path program 10 times [2024-11-14 05:08:39,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:08:39,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012343673] [2024-11-14 05:08:39,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:08:39,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:08:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:08:39,746 INFO L134 CoverageAnalysis]: Checked inductivity of 8350 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 8329 trivial. 0 not checked. [2024-11-14 05:08:39,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:08:39,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012343673] [2024-11-14 05:08:39,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012343673] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:08:39,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620490855] [2024-11-14 05:08:39,747 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:08:39,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:08:39,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:08:39,751 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:08:39,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-14 05:08:40,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:08:40,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 1009 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:08:40,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:08:40,223 INFO L134 CoverageAnalysis]: Checked inductivity of 8350 backedges. 3366 proven. 21 refuted. 0 times theorem prover too weak. 4963 trivial. 0 not checked. [2024-11-14 05:08:40,223 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:08:40,401 INFO L134 CoverageAnalysis]: Checked inductivity of 8350 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 8329 trivial. 0 not checked. [2024-11-14 05:08:40,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620490855] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:08:40,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1956260802] [2024-11-14 05:08:40,403 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 05:08:40,403 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:08:40,403 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:08:40,403 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:08:40,403 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:08:43,998 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 10 for LOIs [2024-11-14 05:08:44,110 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:09:30,584 WARN L286 SmtUtils]: Spent 39.29s on a formula simplification. DAG size of input: 70 DAG size of output: 62 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:10:56,224 WARN L286 SmtUtils]: Spent 1.29m on a formula simplification. DAG size of input: 196 DAG size of output: 142 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:11:38,720 WARN L286 SmtUtils]: Spent 36.79s on a formula simplification. DAG size of input: 88 DAG size of output: 80 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:11:43,523 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7764#(and (exists ((|v_#memory_int_167| (Array Int (Array Int Int)))) (= (store |v_#memory_int_167| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_167| |ULTIMATE.start_main_~#x~0#1.base|) 156 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 156))) |#memory_int|)) (<= 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_36| Int) (|v_ULTIMATE.start_main_~ret~1#1_34| Int) (|v_ULTIMATE.start_main_~ret5~0#1_38| Int) (v_rangesum_~cnt~0_623 Int) (v_rangesum_~ret~0_623 Int)) (and (<= |v_ULTIMATE.start_main_~ret2~0#1_36| 2147483647) (or (and (or (and (<= (+ v_rangesum_~ret~0_623 1) 0) (= (mod (+ (div v_rangesum_~ret~0_623 v_rangesum_~cnt~0_623) 1) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_38| 4294967296)) (not (= (mod v_rangesum_~ret~0_623 v_rangesum_~cnt~0_623) 0))) (and (= (mod (div v_rangesum_~ret~0_623 v_rangesum_~cnt~0_623) 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_38| 4294967296)) (or (< 0 (+ v_rangesum_~ret~0_623 1)) (= (mod v_rangesum_~ret~0_623 v_rangesum_~cnt~0_623) 0))) (and (<= (+ v_rangesum_~ret~0_623 1) 0) (= (mod (+ (div v_rangesum_~ret~0_623 v_rangesum_~cnt~0_623) 1) 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_38|) (not (= (mod v_rangesum_~ret~0_623 v_rangesum_~cnt~0_623) 0))) (and (= (mod (div v_rangesum_~ret~0_623 v_rangesum_~cnt~0_623) 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_38|) (or (< 0 (+ v_rangesum_~ret~0_623 1)) (= (mod v_rangesum_~ret~0_623 v_rangesum_~cnt~0_623) 0)))) (not (= v_rangesum_~cnt~0_623 0))) (and (= |v_ULTIMATE.start_main_~ret5~0#1_38| 0) (= v_rangesum_~cnt~0_623 0))) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_34| 2147483648)) (or (not (= |v_ULTIMATE.start_main_~ret~1#1_34| |v_ULTIMATE.start_main_~ret5~0#1_38|)) (not (= |v_ULTIMATE.start_main_~ret2~0#1_36| |v_ULTIMATE.start_main_~ret~1#1_34|))) (<= |v_ULTIMATE.start_main_~ret~1#1_34| 2147483647) (<= |v_ULTIMATE.start_main_~ret5~0#1_38| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_38| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_36| 2147483648)) (<= 0 v_rangesum_~cnt~0_623))))' at error location [2024-11-14 05:11:43,523 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:11:43,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:11:43,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-14 05:11:43,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417232124] [2024-11-14 05:11:43,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:11:43,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-14 05:11:43,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:11:43,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-14 05:11:43,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=661, Unknown=23, NotChecked=0, Total=870 [2024-11-14 05:11:43,525 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 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 05:11:43,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:11:43,580 INFO L93 Difference]: Finished difference Result 157 states and 169 transitions. [2024-11-14 05:11:43,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-14 05:11:43,581 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 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 186 [2024-11-14 05:11:43,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:11:43,583 INFO L225 Difference]: With dead ends: 157 [2024-11-14 05:11:43,583 INFO L226 Difference]: Without dead ends: 109 [2024-11-14 05:11:43,584 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 179.6s TimeCoverageRelationStatistics Valid=186, Invalid=661, Unknown=23, NotChecked=0, Total=870 [2024-11-14 05:11:43,584 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:11:43,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:11:43,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-14 05:11:43,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-11-14 05:11:43,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 104 states have (on average 1.0288461538461537) internal successors, (107), 104 states have internal predecessors, (107), 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 05:11:43,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2024-11-14 05:11:43,593 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 186 [2024-11-14 05:11:43,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:11:43,594 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2024-11-14 05:11:43,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 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 05:11:43,594 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2024-11-14 05:11:43,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-14 05:11:43,596 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:11:43,596 INFO L215 NwaCegarLoop]: trace histogram [120, 40, 14, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:11:43,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-14 05:11:43,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:11:43,797 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:11:43,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:11:43,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1924322656, now seen corresponding path program 11 times [2024-11-14 05:11:43,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:11:43,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173114604] [2024-11-14 05:11:43,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:11:43,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:11:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:11:44,874 INFO L134 CoverageAnalysis]: Checked inductivity of 8434 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 8329 trivial. 0 not checked. [2024-11-14 05:11:44,875 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:11:44,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173114604] [2024-11-14 05:11:44,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173114604] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:11:44,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071127710] [2024-11-14 05:11:44,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:11:44,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:11:44,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:11:44,879 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:11:44,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7992eaea-5354-43e9-bfe5-bebc9f96df20/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-14 05:11:46,548 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-14 05:11:46,548 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:11:46,554 INFO L255 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-14 05:11:46,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:11:46,602 INFO L134 CoverageAnalysis]: Checked inductivity of 8434 backedges. 3366 proven. 105 refuted. 0 times theorem prover too weak. 4963 trivial. 0 not checked. [2024-11-14 05:11:46,602 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:11:47,121 INFO L134 CoverageAnalysis]: Checked inductivity of 8434 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 8329 trivial. 0 not checked. [2024-11-14 05:11:47,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071127710] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:11:47,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [643381435] [2024-11-14 05:11:47,123 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 05:11:47,123 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:11:47,123 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:11:47,123 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:11:47,123 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:11:52,003 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 10 for LOIs [2024-11-14 05:11:52,236 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:13:18,590 WARN L286 SmtUtils]: Spent 1.22m on a formula simplification. DAG size of input: 115 DAG size of output: 65 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:14:31,759 WARN L286 SmtUtils]: Spent 1.15m on a formula simplification. DAG size of input: 79 DAG size of output: 62 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)