./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_init5_ground-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/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_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/standard_init5_ground-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/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_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/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 a4846ac0596361a9114a94843302c8ab94d86ee4373eaf89126c12ed566c8536 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:24:01,126 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:24:01,200 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 05:24:01,205 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:24:01,206 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:24:01,234 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:24:01,236 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:24:01,236 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:24:01,236 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:24:01,237 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:24:01,237 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:24:01,238 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:24:01,238 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:24:01,239 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 05:24:01,239 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:24:01,239 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:24:01,239 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 05:24:01,239 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 05:24:01,239 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:24:01,239 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 05:24:01,240 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 05:24:01,240 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 05:24:01,241 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:24:01,241 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:24:01,241 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:24:01,241 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:24:01,241 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:24:01,242 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:24:01,242 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:24:01,242 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:24:01,242 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:24:01,242 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:24:01,242 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:24:01,242 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:24:01,243 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:24:01,243 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:24:01,243 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:24:01,244 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:24:01,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:24:01,244 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:24:01,244 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:24:01,244 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:24:01,244 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 05:24:01,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 05:24:01,245 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:24:01,245 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:24:01,245 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 05:24:01,245 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_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/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 -> a4846ac0596361a9114a94843302c8ab94d86ee4373eaf89126c12ed566c8536 [2024-11-14 05:24:01,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:24:01,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:24:01,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:24:01,558 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:24:01,559 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:24:01,560 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/array-examples/standard_init5_ground-2.i Unable to find full path for "g++" [2024-11-14 05:24:03,618 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:24:03,870 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:24:03,871 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/sv-benchmarks/c/array-examples/standard_init5_ground-2.i [2024-11-14 05:24:03,880 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/bin/utaipan-verify-sOmjnqqW8E/data/dc1584be1/512bb4dc6f43460ab68d6beb00c9e257/FLAGf3cee5ea5 [2024-11-14 05:24:04,195 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/bin/utaipan-verify-sOmjnqqW8E/data/dc1584be1/512bb4dc6f43460ab68d6beb00c9e257 [2024-11-14 05:24:04,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:24:04,201 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:24:04,202 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:24:04,202 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:24:04,207 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:24:04,208 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:24:04" (1/1) ... [2024-11-14 05:24:04,210 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@584d8366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:24:04, skipping insertion in model container [2024-11-14 05:24:04,212 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:24:04" (1/1) ... [2024-11-14 05:24:04,229 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:24:04,412 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_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/sv-benchmarks/c/array-examples/standard_init5_ground-2.i[816,829] [2024-11-14 05:24:04,434 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:24:04,443 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:24:04,456 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_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/sv-benchmarks/c/array-examples/standard_init5_ground-2.i[816,829] [2024-11-14 05:24:04,470 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:24:04,490 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:24:04,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:24:04 WrapperNode [2024-11-14 05:24:04,492 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:24:04,494 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:24:04,494 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:24:04,495 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:24:04,503 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:24:04" (1/1) ... [2024-11-14 05:24:04,512 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:24:04" (1/1) ... [2024-11-14 05:24:04,533 INFO L138 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 61 [2024-11-14 05:24:04,535 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:24:04,535 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:24:04,535 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:24:04,536 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:24:04,543 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:24:04" (1/1) ... [2024-11-14 05:24:04,544 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:24:04" (1/1) ... [2024-11-14 05:24:04,545 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:24:04" (1/1) ... [2024-11-14 05:24:04,546 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:24:04" (1/1) ... [2024-11-14 05:24:04,555 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:24:04" (1/1) ... [2024-11-14 05:24:04,562 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:24:04" (1/1) ... [2024-11-14 05:24:04,565 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:24:04" (1/1) ... [2024-11-14 05:24:04,566 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:24:04" (1/1) ... [2024-11-14 05:24:04,569 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:24:04,572 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:24:04,572 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:24:04,572 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:24:04,574 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:24:04" (1/1) ... [2024-11-14 05:24:04,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:24:04,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:24:04,616 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:24:04,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:24:04,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:24:04,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 05:24:04,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 05:24:04,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 05:24:04,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:24:04,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:24:04,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 05:24:04,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 05:24:04,739 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:24:04,742 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:24:04,935 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-14 05:24:04,935 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:24:05,006 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:24:05,006 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-14 05:24:05,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:24:05 BoogieIcfgContainer [2024-11-14 05:24:05,007 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:24:05,010 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:24:05,010 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:24:05,019 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:24:05,019 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:24:04" (1/3) ... [2024-11-14 05:24:05,020 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b9b50d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:24:05, skipping insertion in model container [2024-11-14 05:24:05,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:24:04" (2/3) ... [2024-11-14 05:24:05,020 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b9b50d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:24:05, skipping insertion in model container [2024-11-14 05:24:05,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:24:05" (3/3) ... [2024-11-14 05:24:05,022 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_init5_ground-2.i [2024-11-14 05:24:05,039 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:24:05,041 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG standard_init5_ground-2.i that has 1 procedures, 12 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2024-11-14 05:24:05,108 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:24:05,125 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;@2ead97a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:24:05,126 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 05:24:05,131 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:05,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-14 05:24:05,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:24:05,138 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:24:05,139 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:24:05,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:24:05,145 INFO L85 PathProgramCache]: Analyzing trace with hash -776040964, now seen corresponding path program 1 times [2024-11-14 05:24:05,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:24:05,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416739031] [2024-11-14 05:24:05,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:24:05,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:24:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:24:05,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:24:05,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:24:05,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416739031] [2024-11-14 05:24:05,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416739031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:24:05,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:24:05,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:24:05,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285362684] [2024-11-14 05:24:05,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:24:05,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:24:05,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:24:05,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:24:05,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:24:05,445 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:05,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:24:05,530 INFO L93 Difference]: Finished difference Result 27 states and 43 transitions. [2024-11-14 05:24:05,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:24:05,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-14 05:24:05,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:24:05,542 INFO L225 Difference]: With dead ends: 27 [2024-11-14 05:24:05,542 INFO L226 Difference]: Without dead ends: 16 [2024-11-14 05:24:05,545 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:24:05,548 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:24:05,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:24:05,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-14 05:24:05,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-14 05:24:05,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:05,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2024-11-14 05:24:05,577 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 21 transitions. Word has length 9 [2024-11-14 05:24:05,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:24:05,577 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 21 transitions. [2024-11-14 05:24:05,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:05,578 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2024-11-14 05:24:05,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-14 05:24:05,578 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:24:05,578 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:24:05,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 05:24:05,579 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:24:05,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:24:05,580 INFO L85 PathProgramCache]: Analyzing trace with hash -2104324170, now seen corresponding path program 1 times [2024-11-14 05:24:05,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:24:05,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111982118] [2024-11-14 05:24:05,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:24:05,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:24:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:24:05,745 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:24:05,745 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:24:05,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111982118] [2024-11-14 05:24:05,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111982118] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:24:05,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210632577] [2024-11-14 05:24:05,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:24:05,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:24:05,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:24:05,750 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:24:05,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 05:24:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:24:05,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 05:24:05,863 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:24:05,904 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:24:05,904 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:24:05,947 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:24:05,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210632577] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:24:05,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [109411218] [2024-11-14 05:24:05,967 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2024-11-14 05:24:05,968 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:24:05,972 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:24:05,978 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:24:05,979 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:24:06,633 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:24:06,740 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '175#(and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0) 45)))' at error location [2024-11-14 05:24:06,740 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:24:06,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:24:06,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-14 05:24:06,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869311212] [2024-11-14 05:24:06,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:24:06,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 05:24:06,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:24:06,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 05:24:06,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-14 05:24:06,745 INFO L87 Difference]: Start difference. First operand 16 states and 21 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:06,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:24:06,869 INFO L93 Difference]: Finished difference Result 44 states and 68 transitions. [2024-11-14 05:24:06,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:24:06,869 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-14 05:24:06,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:24:06,870 INFO L225 Difference]: With dead ends: 44 [2024-11-14 05:24:06,870 INFO L226 Difference]: Without dead ends: 31 [2024-11-14 05:24:06,871 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-14 05:24:06,875 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:24:06,875 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:24:06,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-14 05:24:06,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-14 05:24:06,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:06,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2024-11-14 05:24:06,881 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 14 [2024-11-14 05:24:06,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:24:06,881 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2024-11-14 05:24:06,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:06,882 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2024-11-14 05:24:06,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-14 05:24:06,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:24:06,882 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:24:06,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 05:24:07,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:24:07,087 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:24:07,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:24:07,087 INFO L85 PathProgramCache]: Analyzing trace with hash -808895364, now seen corresponding path program 2 times [2024-11-14 05:24:07,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:24:07,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262142403] [2024-11-14 05:24:07,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:24:07,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:24:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:24:07,440 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-14 05:24:07,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:24:07,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262142403] [2024-11-14 05:24:07,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262142403] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:24:07,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756237114] [2024-11-14 05:24:07,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:24:07,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:24:07,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:24:07,443 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:24:07,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 05:24:07,595 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 05:24:07,596 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:24:07,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 05:24:07,600 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:24:07,628 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-14 05:24:07,628 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:24:07,715 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-14 05:24:07,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756237114] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:24:07,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [388164314] [2024-11-14 05:24:07,722 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2024-11-14 05:24:07,722 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:24:07,722 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:24:07,722 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:24:07,723 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:24:08,037 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:24:08,145 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '496#(and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0) 45)))' at error location [2024-11-14 05:24:08,145 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:24:08,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:24:08,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2024-11-14 05:24:08,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022430672] [2024-11-14 05:24:08,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:24:08,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 05:24:08,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:24:08,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 05:24:08,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2024-11-14 05:24:08,148 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:08,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:24:08,365 INFO L93 Difference]: Finished difference Result 86 states and 125 transitions. [2024-11-14 05:24:08,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 05:24:08,366 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-14 05:24:08,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:24:08,366 INFO L225 Difference]: With dead ends: 86 [2024-11-14 05:24:08,367 INFO L226 Difference]: Without dead ends: 61 [2024-11-14 05:24:08,367 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2024-11-14 05:24:08,368 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:24:08,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:24:08,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-14 05:24:08,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-14 05:24:08,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.1) internal successors, (66), 60 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:08,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2024-11-14 05:24:08,376 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 29 [2024-11-14 05:24:08,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:24:08,377 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2024-11-14 05:24:08,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:08,377 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2024-11-14 05:24:08,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-14 05:24:08,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:24:08,378 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:24:08,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-14 05:24:08,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-14 05:24:08,582 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:24:08,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:24:08,583 INFO L85 PathProgramCache]: Analyzing trace with hash 399419964, now seen corresponding path program 3 times [2024-11-14 05:24:08,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:24:08,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167582258] [2024-11-14 05:24:08,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:24:08,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:24:08,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:24:09,370 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-14 05:24:09,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:24:09,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167582258] [2024-11-14 05:24:09,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167582258] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:24:09,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712892072] [2024-11-14 05:24:09,371 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:24:09,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:24:09,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:24:09,375 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:24:09,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 05:24:09,544 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:24:09,545 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:24:09,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:24:09,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:24:09,593 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-14 05:24:09,594 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:24:09,897 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-14 05:24:09,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712892072] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:24:09,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2026789302] [2024-11-14 05:24:09,900 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2024-11-14 05:24:09,900 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:24:09,900 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:24:09,900 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:24:09,901 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:24:10,148 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:24:10,262 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1153#(and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0) 45)))' at error location [2024-11-14 05:24:10,262 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:24:10,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:24:10,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2024-11-14 05:24:10,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086439757] [2024-11-14 05:24:10,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:24:10,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-14 05:24:10,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:24:10,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-14 05:24:10,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=502, Unknown=0, NotChecked=0, Total=812 [2024-11-14 05:24:10,265 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand has 25 states, 25 states have (on average 1.48) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:10,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:24:10,683 INFO L93 Difference]: Finished difference Result 170 states and 239 transitions. [2024-11-14 05:24:10,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-14 05:24:10,684 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.48) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-14 05:24:10,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:24:10,686 INFO L225 Difference]: With dead ends: 170 [2024-11-14 05:24:10,686 INFO L226 Difference]: Without dead ends: 121 [2024-11-14 05:24:10,687 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=310, Invalid=502, Unknown=0, NotChecked=0, Total=812 [2024-11-14 05:24:10,688 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:24:10,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 05:24:10,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-14 05:24:10,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2024-11-14 05:24:10,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.05) internal successors, (126), 120 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:10,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 126 transitions. [2024-11-14 05:24:10,713 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 126 transitions. Word has length 59 [2024-11-14 05:24:10,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:24:10,714 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 126 transitions. [2024-11-14 05:24:10,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.48) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:10,714 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 126 transitions. [2024-11-14 05:24:10,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-14 05:24:10,717 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:24:10,717 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:24:10,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 05:24:10,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:24:10,923 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:24:10,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:24:10,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1112708540, now seen corresponding path program 4 times [2024-11-14 05:24:10,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:24:10,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119100243] [2024-11-14 05:24:10,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:24:10,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:24:11,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:24:12,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-14 05:24:12,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:24:12,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119100243] [2024-11-14 05:24:12,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119100243] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:24:12,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460832367] [2024-11-14 05:24:12,604 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:24:12,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:24:12,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:24:12,606 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:24:12,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 05:24:12,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:24:12,924 INFO L255 TraceCheckSpWp]: Trace formula consists of 826 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-14 05:24:12,930 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:24:13,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-14 05:24:13,013 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:24:14,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-14 05:24:14,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460832367] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:24:14,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [96786165] [2024-11-14 05:24:14,205 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2024-11-14 05:24:14,205 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:24:14,206 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:24:14,206 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:24:14,206 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:24:14,408 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:24:14,559 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2482#(and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0) 45)))' at error location [2024-11-14 05:24:14,559 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:24:14,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:24:14,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2024-11-14 05:24:14,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304429424] [2024-11-14 05:24:14,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:24:14,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-14 05:24:14,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:24:14,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-14 05:24:14,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1186, Invalid=1570, Unknown=0, NotChecked=0, Total=2756 [2024-11-14 05:24:14,565 INFO L87 Difference]: Start difference. First operand 121 states and 126 transitions. Second operand has 49 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 48 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:15,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:24:15,606 INFO L93 Difference]: Finished difference Result 338 states and 467 transitions. [2024-11-14 05:24:15,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-14 05:24:15,606 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 48 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2024-11-14 05:24:15,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:24:15,609 INFO L225 Difference]: With dead ends: 338 [2024-11-14 05:24:15,613 INFO L226 Difference]: Without dead ends: 241 [2024-11-14 05:24:15,615 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1186, Invalid=1570, Unknown=0, NotChecked=0, Total=2756 [2024-11-14 05:24:15,617 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 769 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 769 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 05:24:15,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [769 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-14 05:24:15,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2024-11-14 05:24:15,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2024-11-14 05:24:15,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 1.025) internal successors, (246), 240 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:15,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 246 transitions. [2024-11-14 05:24:15,662 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 246 transitions. Word has length 119 [2024-11-14 05:24:15,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:24:15,663 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 246 transitions. [2024-11-14 05:24:15,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 48 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:15,663 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 246 transitions. [2024-11-14 05:24:15,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-11-14 05:24:15,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:24:15,687 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:24:15,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 05:24:15,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:24:15,888 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:24:15,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:24:15,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1366381380, now seen corresponding path program 5 times [2024-11-14 05:24:15,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:24:15,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178567413] [2024-11-14 05:24:15,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:24:15,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:24:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:24:20,653 INFO L134 CoverageAnalysis]: Checked inductivity of 5405 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-14 05:24:20,654 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:24:20,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178567413] [2024-11-14 05:24:20,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178567413] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:24:20,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535863996] [2024-11-14 05:24:20,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:24:20,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:24:20,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:24:20,656 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:24:20,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4bf86a5-ecf2-4692-89cf-8b0a60c93564/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process