./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_minInArray_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/standard_minInArray_ground-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje --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 c82f9f6b2ddd9cc29ac088c74e4e84d5622d389d0c95b67e6fa7eaa0a2f36f61 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 04:59:15,096 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 04:59:15,246 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 04:59:15,258 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 04:59:15,259 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 04:59:15,308 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 04:59:15,309 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 04:59:15,309 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 04:59:15,310 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 04:59:15,311 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 04:59:15,311 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 04:59:15,312 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 04:59:15,314 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 04:59:15,317 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 04:59:15,318 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 04:59:15,318 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 04:59:15,319 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 04:59:15,319 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 04:59:15,320 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 04:59:15,320 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 04:59:15,321 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 04:59:15,325 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 04:59:15,326 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 04:59:15,327 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 04:59:15,327 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 04:59:15,327 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 04:59:15,328 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 04:59:15,328 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 04:59:15,329 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 04:59:15,330 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 04:59:15,331 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 04:59:15,331 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 04:59:15,332 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 04:59:15,333 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 04:59:15,334 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 04:59:15,334 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 04:59:15,334 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 04:59:15,335 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 04:59:15,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:59:15,336 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 04:59:15,337 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 04:59:15,337 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 04:59:15,338 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 04:59:15,338 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 04:59:15,338 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 04:59:15,339 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 04:59:15,339 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 04:59:15,339 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c82f9f6b2ddd9cc29ac088c74e4e84d5622d389d0c95b67e6fa7eaa0a2f36f61 [2024-11-09 04:59:15,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 04:59:15,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 04:59:15,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 04:59:15,771 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 04:59:15,772 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 04:59:15,774 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/array-examples/standard_minInArray_ground-1.i Unable to find full path for "g++" [2024-11-09 04:59:18,281 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 04:59:18,569 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 04:59:18,569 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/sv-benchmarks/c/array-examples/standard_minInArray_ground-1.i [2024-11-09 04:59:18,579 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/data/d6fc36332/82e3549cea604d55a44bd9bdc8044ba5/FLAG6a2e7b8f1 [2024-11-09 04:59:18,603 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/data/d6fc36332/82e3549cea604d55a44bd9bdc8044ba5 [2024-11-09 04:59:18,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 04:59:18,611 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 04:59:18,614 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 04:59:18,614 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 04:59:18,623 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 04:59:18,624 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:59:18" (1/1) ... [2024-11-09 04:59:18,629 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@327c0266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:18, skipping insertion in model container [2024-11-09 04:59:18,630 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:59:18" (1/1) ... [2024-11-09 04:59:18,676 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 04:59:18,936 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_c4021507-38ac-445c-bef7-01d22e137a57/sv-benchmarks/c/array-examples/standard_minInArray_ground-1.i[821,834] [2024-11-09 04:59:18,962 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:59:18,974 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 04:59:18,989 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_c4021507-38ac-445c-bef7-01d22e137a57/sv-benchmarks/c/array-examples/standard_minInArray_ground-1.i[821,834] [2024-11-09 04:59:18,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:59:19,020 INFO L204 MainTranslator]: Completed translation [2024-11-09 04:59:19,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:19 WrapperNode [2024-11-09 04:59:19,021 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 04:59:19,022 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 04:59:19,023 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 04:59:19,023 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 04:59:19,033 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:19" (1/1) ... [2024-11-09 04:59:19,042 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:19" (1/1) ... [2024-11-09 04:59:19,065 INFO L138 Inliner]: procedures = 16, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2024-11-09 04:59:19,066 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 04:59:19,067 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 04:59:19,067 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 04:59:19,067 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 04:59:19,077 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:19" (1/1) ... [2024-11-09 04:59:19,078 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:19" (1/1) ... [2024-11-09 04:59:19,080 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:19" (1/1) ... [2024-11-09 04:59:19,080 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:19" (1/1) ... [2024-11-09 04:59:19,086 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:19" (1/1) ... [2024-11-09 04:59:19,091 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:19" (1/1) ... [2024-11-09 04:59:19,092 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:19" (1/1) ... [2024-11-09 04:59:19,093 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:19" (1/1) ... [2024-11-09 04:59:19,095 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 04:59:19,096 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 04:59:19,097 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 04:59:19,097 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 04:59:19,098 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:19" (1/1) ... [2024-11-09 04:59:19,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:59:19,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:59:19,140 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 04:59:19,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 04:59:19,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 04:59:19,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 04:59:19,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 04:59:19,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 04:59:19,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 04:59:19,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 04:59:19,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 04:59:19,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 04:59:19,291 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 04:59:19,293 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 04:59:19,470 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-09 04:59:19,470 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 04:59:19,515 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 04:59:19,515 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 04:59:19,516 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:59:19 BoogieIcfgContainer [2024-11-09 04:59:19,516 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 04:59:19,519 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 04:59:19,519 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 04:59:19,523 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 04:59:19,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 04:59:18" (1/3) ... [2024-11-09 04:59:19,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43839e93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:59:19, skipping insertion in model container [2024-11-09 04:59:19,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:19" (2/3) ... [2024-11-09 04:59:19,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43839e93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:59:19, skipping insertion in model container [2024-11-09 04:59:19,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:59:19" (3/3) ... [2024-11-09 04:59:19,527 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_minInArray_ground-1.i [2024-11-09 04:59:19,551 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 04:59:19,552 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 04:59:19,634 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 04:59:19,643 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;@288d8391, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 04:59:19,643 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 04:59:19,649 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 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) [2024-11-09 04:59:19,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 04:59:19,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:59:19,658 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:59:19,660 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:59:19,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:59:19,670 INFO L85 PathProgramCache]: Analyzing trace with hash 190647081, now seen corresponding path program 1 times [2024-11-09 04:59:19,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:59:19,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900732294] [2024-11-09 04:59:19,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:59:19,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:59:19,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:59:20,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:59:20,096 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:59:20,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900732294] [2024-11-09 04:59:20,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900732294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:59:20,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:59:20,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 04:59:20,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445588389] [2024-11-09 04:59:20,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:59:20,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:59:20,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:59:20,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:59:20,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:59:20,150 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 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) 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) [2024-11-09 04:59:20,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:59:20,226 INFO L93 Difference]: Finished difference Result 29 states and 41 transitions. [2024-11-09 04:59:20,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:59:20,234 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 [2024-11-09 04:59:20,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:59:20,247 INFO L225 Difference]: With dead ends: 29 [2024-11-09 04:59:20,247 INFO L226 Difference]: Without dead ends: 15 [2024-11-09 04:59:20,251 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 [2024-11-09 04:59:20,258 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 1 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:59:20,260 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 27 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:59:20,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-09 04:59:20,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-09 04:59:20,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 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) [2024-11-09 04:59:20,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2024-11-09 04:59:20,309 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 9 [2024-11-09 04:59:20,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:59:20,310 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2024-11-09 04:59:20,310 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) [2024-11-09 04:59:20,311 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2024-11-09 04:59:20,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 04:59:20,311 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:59:20,312 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:59:20,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 04:59:20,315 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:59:20,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:59:20,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1591695214, now seen corresponding path program 1 times [2024-11-09 04:59:20,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:59:20,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068075586] [2024-11-09 04:59:20,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:59:20,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:59:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:59:20,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:59:20,539 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:59:20,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068075586] [2024-11-09 04:59:20,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068075586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:59:20,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924517558] [2024-11-09 04:59:20,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:59:20,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:59:20,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:59:20,546 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:59:20,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 04:59:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:59:20,644 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 04:59:20,652 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:59:20,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:59:20,687 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:59:20,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924517558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:59:20,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 04:59:20,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-09 04:59:20,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369550185] [2024-11-09 04:59:20,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:59:20,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:59:20,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:59:20,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:59:20,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:59:20,696 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:59:20,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:59:20,732 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2024-11-09 04:59:20,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:59:20,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-09 04:59:20,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:59:20,736 INFO L225 Difference]: With dead ends: 24 [2024-11-09 04:59:20,736 INFO L226 Difference]: Without dead ends: 17 [2024-11-09 04:59:20,736 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:59:20,738 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 1 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:59:20,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 25 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:59:20,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-09 04:59:20,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-09 04:59:20,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 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) [2024-11-09 04:59:20,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2024-11-09 04:59:20,749 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 11 [2024-11-09 04:59:20,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:59:20,751 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2024-11-09 04:59:20,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:59:20,752 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2024-11-09 04:59:20,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 04:59:20,752 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:59:20,752 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:59:20,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 04:59:20,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:59:20,954 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:59:20,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:59:20,955 INFO L85 PathProgramCache]: Analyzing trace with hash 136220862, now seen corresponding path program 1 times [2024-11-09 04:59:20,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:59:20,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679898256] [2024-11-09 04:59:20,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:59:20,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:59:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:59:21,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:59:21,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:59:21,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679898256] [2024-11-09 04:59:21,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679898256] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:59:21,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836349393] [2024-11-09 04:59:21,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:59:21,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:59:21,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:59:21,061 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:59:21,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 04:59:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:59:21,155 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 04:59:21,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:59:21,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:59:21,218 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:59:21,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:59:21,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836349393] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:59:21,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [103519358] [2024-11-09 04:59:21,311 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 04:59:21,312 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:59:21,316 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:59:21,323 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:59:21,324 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:59:22,500 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:59:23,339 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '243#(and (exists ((|v_ULTIMATE.start_main_~min~0#1_25| Int) (|v_ULTIMATE.start_main_#t~mem4#1_22| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|) (or (and (= |ULTIMATE.start_main_~min~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996)) (<= (+ (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996) 1) |v_ULTIMATE.start_main_~min~0#1_25|)) (and (= |ULTIMATE.start_main_#t~mem4#1| |v_ULTIMATE.start_main_#t~mem4#1_22|) (<= |v_ULTIMATE.start_main_~min~0#1_25| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996)) (= |v_ULTIMATE.start_main_~min~0#1_25| |ULTIMATE.start_main_~min~0#1|))))) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0) |ULTIMATE.start_main_~min~0#1|))' at error location [2024-11-09 04:59:23,341 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:59:23,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:59:23,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-09 04:59:23,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236789346] [2024-11-09 04:59:23,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:59:23,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 04:59:23,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:59:23,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 04:59:23,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-11-09 04:59:23,349 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 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) [2024-11-09 04:59:23,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:59:23,417 INFO L93 Difference]: Finished difference Result 34 states and 45 transitions. [2024-11-09 04:59:23,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:59:23,420 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 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 13 [2024-11-09 04:59:23,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:59:23,421 INFO L225 Difference]: With dead ends: 34 [2024-11-09 04:59:23,421 INFO L226 Difference]: Without dead ends: 22 [2024-11-09 04:59:23,422 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-11-09 04:59:23,425 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 2 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:59:23,426 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 32 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:59:23,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-09 04:59:23,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-09 04:59:23,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 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) [2024-11-09 04:59:23,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-11-09 04:59:23,435 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 13 [2024-11-09 04:59:23,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:59:23,436 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-11-09 04:59:23,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 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) [2024-11-09 04:59:23,436 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-11-09 04:59:23,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 04:59:23,438 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:59:23,438 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:59:23,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 04:59:23,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:59:23,643 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:59:23,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:59:23,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1141461427, now seen corresponding path program 2 times [2024-11-09 04:59:23,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:59:23,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653910808] [2024-11-09 04:59:23,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:59:23,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:59:23,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:59:23,826 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 04:59:23,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:59:23,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653910808] [2024-11-09 04:59:23,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653910808] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:59:23,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373206731] [2024-11-09 04:59:23,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 04:59:23,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:59:23,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:59:23,831 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:59:23,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 04:59:23,908 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 04:59:23,908 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:59:23,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 04:59:23,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:59:23,940 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 04:59:23,940 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:59:23,973 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 04:59:23,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373206731] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:59:23,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1331589913] [2024-11-09 04:59:23,977 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 04:59:23,978 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:59:23,979 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:59:23,979 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:59:23,980 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:59:24,433 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:59:25,092 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '442#(and (exists ((|v_ULTIMATE.start_main_~min~0#1_29| Int) (|v_ULTIMATE.start_main_#t~mem4#1_26| Int)) (and (<= 1 |#StackHeapBarrier|) (or (and (<= |v_ULTIMATE.start_main_~min~0#1_29| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996)) (= |ULTIMATE.start_main_#t~mem4#1| |v_ULTIMATE.start_main_#t~mem4#1_26|) (= |v_ULTIMATE.start_main_~min~0#1_29| |ULTIMATE.start_main_~min~0#1|)) (and (<= (+ (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996) 1) |v_ULTIMATE.start_main_~min~0#1_29|) (= |ULTIMATE.start_main_~min~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996)))) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|))) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0) |ULTIMATE.start_main_~min~0#1|))' at error location [2024-11-09 04:59:25,093 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:59:25,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:59:25,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-09 04:59:25,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888446112] [2024-11-09 04:59:25,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:59:25,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 04:59:25,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:59:25,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 04:59:25,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-11-09 04:59:25,097 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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) [2024-11-09 04:59:25,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:59:25,141 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2024-11-09 04:59:25,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:59:25,142 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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 19 [2024-11-09 04:59:25,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:59:25,143 INFO L225 Difference]: With dead ends: 34 [2024-11-09 04:59:25,143 INFO L226 Difference]: Without dead ends: 27 [2024-11-09 04:59:25,144 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-11-09 04:59:25,145 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 2 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:59:25,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 42 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:59:25,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-09 04:59:25,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-09 04:59:25,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 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) [2024-11-09 04:59:25,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2024-11-09 04:59:25,152 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 19 [2024-11-09 04:59:25,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:59:25,153 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2024-11-09 04:59:25,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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) [2024-11-09 04:59:25,153 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2024-11-09 04:59:25,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 04:59:25,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:59:25,155 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:59:25,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 04:59:25,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:59:25,359 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:59:25,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:59:25,360 INFO L85 PathProgramCache]: Analyzing trace with hash -735888643, now seen corresponding path program 3 times [2024-11-09 04:59:25,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:59:25,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467368178] [2024-11-09 04:59:25,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:59:25,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:59:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:59:25,528 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 04:59:25,528 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:59:25,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467368178] [2024-11-09 04:59:25,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467368178] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:59:25,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822469889] [2024-11-09 04:59:25,529 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 04:59:25,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:59:25,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:59:25,532 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:59:25,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 04:59:25,623 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 04:59:25,624 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:59:25,625 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 04:59:25,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:59:25,659 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 04:59:25,659 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:59:25,763 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 04:59:25,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822469889] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:59:25,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [228881044] [2024-11-09 04:59:25,767 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 04:59:25,767 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:59:25,768 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:59:25,768 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:59:25,768 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:59:26,118 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:59:26,809 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '692#(and (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (exists ((|v_ULTIMATE.start_main_~min~0#1_36| Int) (|v_ULTIMATE.start_main_#t~mem4#1_33| Int)) (and (<= 1 |#StackHeapBarrier|) (or (and (= |ULTIMATE.start_main_~min~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996)) (<= (+ (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996) 1) |v_ULTIMATE.start_main_~min~0#1_36|)) (and (<= |v_ULTIMATE.start_main_~min~0#1_36| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996)) (= |v_ULTIMATE.start_main_~min~0#1_36| |ULTIMATE.start_main_~min~0#1|) (= |ULTIMATE.start_main_#t~mem4#1| |v_ULTIMATE.start_main_#t~mem4#1_33|))) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|))) (<= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0) |ULTIMATE.start_main_~min~0#1|))' at error location [2024-11-09 04:59:26,809 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:59:26,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:59:26,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-09 04:59:26,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004017512] [2024-11-09 04:59:26,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:59:26,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 04:59:26,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:59:26,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 04:59:26,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2024-11-09 04:59:26,812 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 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) [2024-11-09 04:59:26,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:59:26,905 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2024-11-09 04:59:26,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 04:59:26,910 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 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 25 [2024-11-09 04:59:26,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:59:26,911 INFO L225 Difference]: With dead ends: 56 [2024-11-09 04:59:26,911 INFO L226 Difference]: Without dead ends: 39 [2024-11-09 04:59:26,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2024-11-09 04:59:26,913 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:59:26,915 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 47 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:59:26,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-09 04:59:26,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-09 04:59:26,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 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) [2024-11-09 04:59:26,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2024-11-09 04:59:26,929 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 25 [2024-11-09 04:59:26,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:59:26,929 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2024-11-09 04:59:26,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 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) [2024-11-09 04:59:26,930 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2024-11-09 04:59:26,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 04:59:26,931 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:59:26,931 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:59:26,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 04:59:27,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:59:27,134 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:59:27,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:59:27,135 INFO L85 PathProgramCache]: Analyzing trace with hash 872411611, now seen corresponding path program 4 times [2024-11-09 04:59:27,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:59:27,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531089238] [2024-11-09 04:59:27,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:59:27,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:59:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:59:27,535 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 04:59:27,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:59:27,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531089238] [2024-11-09 04:59:27,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531089238] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:59:27,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045830807] [2024-11-09 04:59:27,536 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 04:59:27,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:59:27,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:59:27,538 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:59:27,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 04:59:27,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:59:27,645 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 04:59:27,647 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:59:27,716 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 04:59:27,716 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:59:28,111 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 04:59:28,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045830807] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:59:28,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1424485072] [2024-11-09 04:59:28,115 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 04:59:28,115 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:59:28,115 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:59:28,116 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:59:28,116 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:59:28,477 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:59:29,227 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1077#(and (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (exists ((|v_ULTIMATE.start_main_#t~mem4#1_40| Int) (|v_ULTIMATE.start_main_~min~0#1_43| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|) (or (and (= |ULTIMATE.start_main_~min~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996)) (<= (+ (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996) 1) |v_ULTIMATE.start_main_~min~0#1_43|)) (and (<= |v_ULTIMATE.start_main_~min~0#1_43| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996)) (= |v_ULTIMATE.start_main_~min~0#1_43| |ULTIMATE.start_main_~min~0#1|) (= |ULTIMATE.start_main_#t~mem4#1| |v_ULTIMATE.start_main_#t~mem4#1_40|))))) (<= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0) |ULTIMATE.start_main_~min~0#1|))' at error location [2024-11-09 04:59:29,228 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:59:29,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:59:29,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2024-11-09 04:59:29,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216280751] [2024-11-09 04:59:29,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:59:29,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 04:59:29,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:59:29,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 04:59:29,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=795, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 04:59:29,232 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 25 states, 25 states have (on average 2.24) internal successors, (56), 24 states have internal predecessors, (56), 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) [2024-11-09 04:59:29,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:59:29,377 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2024-11-09 04:59:29,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 04:59:29,379 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 24 states have internal predecessors, (56), 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 37 [2024-11-09 04:59:29,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:59:29,380 INFO L225 Difference]: With dead ends: 80 [2024-11-09 04:59:29,380 INFO L226 Difference]: Without dead ends: 63 [2024-11-09 04:59:29,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=327, Invalid=795, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 04:59:29,382 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:59:29,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 29 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:59:29,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-09 04:59:29,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-09 04:59:29,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 62 states have internal predecessors, (65), 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) [2024-11-09 04:59:29,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2024-11-09 04:59:29,392 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 37 [2024-11-09 04:59:29,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:59:29,392 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2024-11-09 04:59:29,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 24 states have internal predecessors, (56), 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) [2024-11-09 04:59:29,393 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2024-11-09 04:59:29,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-09 04:59:29,394 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:59:29,394 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:59:29,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 04:59:29,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:59:29,595 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:59:29,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:59:29,596 INFO L85 PathProgramCache]: Analyzing trace with hash 714655895, now seen corresponding path program 5 times [2024-11-09 04:59:29,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:59:29,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409204778] [2024-11-09 04:59:29,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:59:29,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:59:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:59:30,634 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 04:59:30,635 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:59:30,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409204778] [2024-11-09 04:59:30,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409204778] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:59:30,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269967600] [2024-11-09 04:59:30,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 04:59:30,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:59:30,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:59:30,637 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:59:30,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 04:59:30,752 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 04:59:30,753 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:59:30,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 04:59:30,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:59:30,885 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-09 04:59:30,885 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:59:31,069 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-09 04:59:31,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269967600] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:59:31,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1329461674] [2024-11-09 04:59:31,072 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 04:59:31,073 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:59:31,073 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:59:31,073 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:59:31,073 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:59:31,390 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:59:32,235 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1688#(and (exists ((|v_ULTIMATE.start_main_~min~0#1_50| Int) (|v_ULTIMATE.start_main_#t~mem4#1_47| Int)) (and (<= 1 |#StackHeapBarrier|) (or (and (<= (+ (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996) 1) |v_ULTIMATE.start_main_~min~0#1_50|) (= |ULTIMATE.start_main_~min~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996))) (and (<= |v_ULTIMATE.start_main_~min~0#1_50| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996)) (= |v_ULTIMATE.start_main_~min~0#1_50| |ULTIMATE.start_main_~min~0#1|) (= |ULTIMATE.start_main_#t~mem4#1| |v_ULTIMATE.start_main_#t~mem4#1_47|))) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|))) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0) |ULTIMATE.start_main_~min~0#1|))' at error location [2024-11-09 04:59:32,236 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:59:32,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:59:32,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 7, 7] total 35 [2024-11-09 04:59:32,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410944347] [2024-11-09 04:59:32,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:59:32,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-09 04:59:32,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:59:32,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-09 04:59:32,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=1500, Unknown=0, NotChecked=0, Total=1892 [2024-11-09 04:59:32,240 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand has 35 states, 35 states have (on average 2.257142857142857) internal successors, (79), 35 states have internal predecessors, (79), 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) [2024-11-09 04:59:32,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:59:32,441 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2024-11-09 04:59:32,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-09 04:59:32,442 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.257142857142857) internal successors, (79), 35 states have internal predecessors, (79), 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 61 [2024-11-09 04:59:32,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:59:32,444 INFO L225 Difference]: With dead ends: 95 [2024-11-09 04:59:32,444 INFO L226 Difference]: Without dead ends: 78 [2024-11-09 04:59:32,445 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=392, Invalid=1500, Unknown=0, NotChecked=0, Total=1892 [2024-11-09 04:59:32,447 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:59:32,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 74 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:59:32,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-09 04:59:32,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2024-11-09 04:59:32,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.0394736842105263) internal successors, (79), 76 states have internal predecessors, (79), 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) [2024-11-09 04:59:32,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2024-11-09 04:59:32,458 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 61 [2024-11-09 04:59:32,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:59:32,459 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2024-11-09 04:59:32,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.257142857142857) internal successors, (79), 35 states have internal predecessors, (79), 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) [2024-11-09 04:59:32,459 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2024-11-09 04:59:32,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-09 04:59:32,461 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:59:32,461 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:59:32,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 04:59:32,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:59:32,665 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:59:32,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:59:32,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1038623548, now seen corresponding path program 6 times [2024-11-09 04:59:32,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:59:32,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978770079] [2024-11-09 04:59:32,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:59:32,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:59:32,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:59:33,773 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-09 04:59:33,774 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:59:33,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978770079] [2024-11-09 04:59:33,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978770079] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:59:33,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017696608] [2024-11-09 04:59:33,775 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 04:59:33,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:59:33,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:59:33,777 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:59:33,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 04:59:33,940 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 04:59:33,940 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:59:33,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 04:59:33,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:59:34,083 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-09 04:59:34,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:59:35,215 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-09 04:59:35,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017696608] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:59:35,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [771528498] [2024-11-09 04:59:35,218 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 04:59:35,218 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:59:35,219 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:59:35,219 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:59:35,219 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:59:35,533 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:59:36,252 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2442#(and (exists ((|v_ULTIMATE.start_main_#t~mem4#1_60| Int) (|v_ULTIMATE.start_main_~min~0#1_63| Int)) (and (or (and (= |ULTIMATE.start_main_~min~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996)) (<= (+ (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996) 1) |v_ULTIMATE.start_main_~min~0#1_63|)) (and (<= |v_ULTIMATE.start_main_~min~0#1_63| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996)) (= |ULTIMATE.start_main_#t~mem4#1| |v_ULTIMATE.start_main_#t~mem4#1_60|) (= |v_ULTIMATE.start_main_~min~0#1_63| |ULTIMATE.start_main_~min~0#1|))) (<= 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) (<= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0) |ULTIMATE.start_main_~min~0#1|))' at error location [2024-11-09 04:59:36,253 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:59:36,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:59:36,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 50 [2024-11-09 04:59:36,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340978113] [2024-11-09 04:59:36,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:59:36,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-09 04:59:36,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:59:36,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-09 04:59:36,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1302, Invalid=2238, Unknown=0, NotChecked=0, Total=3540 [2024-11-09 04:59:36,261 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand has 51 states, 51 states have (on average 2.1176470588235294) internal successors, (108), 50 states have internal predecessors, (108), 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) [2024-11-09 04:59:36,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:59:36,560 INFO L93 Difference]: Finished difference Result 156 states and 184 transitions. [2024-11-09 04:59:36,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-09 04:59:36,561 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.1176470588235294) internal successors, (108), 50 states have internal predecessors, (108), 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 75 [2024-11-09 04:59:36,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:59:36,562 INFO L225 Difference]: With dead ends: 156 [2024-11-09 04:59:36,562 INFO L226 Difference]: Without dead ends: 127 [2024-11-09 04:59:36,568 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1302, Invalid=2238, Unknown=0, NotChecked=0, Total=3540 [2024-11-09 04:59:36,569 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:59:36,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 47 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:59:36,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-09 04:59:36,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2024-11-09 04:59:36,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.0238095238095237) internal successors, (129), 126 states have internal predecessors, (129), 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) [2024-11-09 04:59:36,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 129 transitions. [2024-11-09 04:59:36,595 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 129 transitions. Word has length 75 [2024-11-09 04:59:36,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:59:36,596 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 129 transitions. [2024-11-09 04:59:36,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.1176470588235294) internal successors, (108), 50 states have internal predecessors, (108), 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) [2024-11-09 04:59:36,598 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 129 transitions. [2024-11-09 04:59:36,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-09 04:59:36,602 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:59:36,602 INFO L215 NwaCegarLoop]: trace histogram [48, 48, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:59:36,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 04:59:36,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:59:36,804 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:59:36,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:59:36,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1518152633, now seen corresponding path program 7 times [2024-11-09 04:59:36,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:59:36,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939250827] [2024-11-09 04:59:36,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:59:36,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:59:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:59:40,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-09 04:59:40,153 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:59:40,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939250827] [2024-11-09 04:59:40,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939250827] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:59:40,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313359947] [2024-11-09 04:59:40,154 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 04:59:40,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:59:40,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:59:40,157 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:59:40,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 04:59:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:59:40,423 INFO L255 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-09 04:59:40,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:59:40,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-09 04:59:40,661 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:59:45,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-09 04:59:45,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313359947] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:59:45,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1273264231] [2024-11-09 04:59:45,137 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 04:59:45,137 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:59:45,138 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:59:45,138 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:59:45,138 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:59:45,455 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:59:46,209 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3713#(and (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (exists ((|v_ULTIMATE.start_main_#t~mem4#1_73| Int) (|v_ULTIMATE.start_main_~min~0#1_76| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|) (or (and (<= (+ (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996) 1) |v_ULTIMATE.start_main_~min~0#1_76|) (= |ULTIMATE.start_main_~min~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996))) (and (= |ULTIMATE.start_main_#t~mem4#1| |v_ULTIMATE.start_main_#t~mem4#1_73|) (<= |v_ULTIMATE.start_main_~min~0#1_76| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996)) (= |v_ULTIMATE.start_main_~min~0#1_76| |ULTIMATE.start_main_~min~0#1|))))) (= |ULTIMATE.start_main_~x~0#1| 0) (<= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0) |ULTIMATE.start_main_~min~0#1|))' at error location [2024-11-09 04:59:46,210 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:59:46,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:59:46,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 100 [2024-11-09 04:59:46,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170502311] [2024-11-09 04:59:46,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:59:46,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2024-11-09 04:59:46,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:59:46,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2024-11-09 04:59:46,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5077, Invalid=6913, Unknown=0, NotChecked=0, Total=11990 [2024-11-09 04:59:46,219 INFO L87 Difference]: Start difference. First operand 127 states and 129 transitions. Second operand has 101 states, 101 states have (on average 2.0594059405940595) internal successors, (208), 100 states have internal predecessors, (208), 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) [2024-11-09 04:59:46,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:59:46,715 INFO L93 Difference]: Finished difference Result 256 states and 309 transitions. [2024-11-09 04:59:46,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-11-09 04:59:46,716 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.0594059405940595) internal successors, (208), 100 states have internal predecessors, (208), 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 125 [2024-11-09 04:59:46,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:59:46,718 INFO L225 Difference]: With dead ends: 256 [2024-11-09 04:59:46,718 INFO L226 Difference]: Without dead ends: 227 [2024-11-09 04:59:46,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1530 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=5077, Invalid=6913, Unknown=0, NotChecked=0, Total=11990 [2024-11-09 04:59:46,722 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:59:46,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 65 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 04:59:46,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-11-09 04:59:46,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2024-11-09 04:59:46,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.0132743362831858) internal successors, (229), 226 states have internal predecessors, (229), 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) [2024-11-09 04:59:46,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 229 transitions. [2024-11-09 04:59:46,746 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 229 transitions. Word has length 125 [2024-11-09 04:59:46,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:59:46,747 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 229 transitions. [2024-11-09 04:59:46,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.0594059405940595) internal successors, (208), 100 states have internal predecessors, (208), 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) [2024-11-09 04:59:46,751 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 229 transitions. [2024-11-09 04:59:46,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-09 04:59:46,757 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:59:46,758 INFO L215 NwaCegarLoop]: trace histogram [98, 98, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:59:46,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 04:59:46,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:59:46,958 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:59:46,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:59:46,959 INFO L85 PathProgramCache]: Analyzing trace with hash -22896397, now seen corresponding path program 8 times [2024-11-09 04:59:46,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:59:46,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039190276] [2024-11-09 04:59:46,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:59:46,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:59:47,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:59:57,031 INFO L134 CoverageAnalysis]: Checked inductivity of 9704 backedges. 0 proven. 9604 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-09 04:59:57,031 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:59:57,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039190276] [2024-11-09 04:59:57,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039190276] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:59:57,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741188936] [2024-11-09 04:59:57,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 04:59:57,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:59:57,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:59:57,034 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:59:57,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 04:59:57,389 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-09 04:59:57,389 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:59:57,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 04:59:57,396 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:59:58,105 INFO L134 CoverageAnalysis]: Checked inductivity of 9704 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 9604 trivial. 0 not checked. [2024-11-09 04:59:58,105 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:59:59,017 INFO L134 CoverageAnalysis]: Checked inductivity of 9704 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 9604 trivial. 0 not checked. [2024-11-09 04:59:59,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741188936] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:59:59,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1408857331] [2024-11-09 04:59:59,020 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 04:59:59,020 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:59:59,021 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:59:59,021 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:59:59,021 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:59:59,332 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:00:00,878 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5906#(and (exists ((|v_ULTIMATE.start_main_~min~0#1_89| Int) (|v_ULTIMATE.start_main_#t~mem4#1_86| Int)) (and (<= 1 |#StackHeapBarrier|) (or (and (= |ULTIMATE.start_main_#t~mem4#1| |v_ULTIMATE.start_main_#t~mem4#1_86|) (= |v_ULTIMATE.start_main_~min~0#1_89| |ULTIMATE.start_main_~min~0#1|) (<= |v_ULTIMATE.start_main_~min~0#1_89| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996))) (and (<= (+ (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996) 1) |v_ULTIMATE.start_main_~min~0#1_89|) (= |ULTIMATE.start_main_~min~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996)))) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|))) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0) |ULTIMATE.start_main_~min~0#1|))' at error location [2024-11-09 05:00:00,879 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:00:00,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:00:00,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 13, 13] total 123 [2024-11-09 05:00:00,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668642055] [2024-11-09 05:00:00,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:00:00,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2024-11-09 05:00:00,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:00:00,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2024-11-09 05:00:00,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5352, Invalid=11940, Unknown=0, NotChecked=0, Total=17292 [2024-11-09 05:00:00,888 INFO L87 Difference]: Start difference. First operand 227 states and 229 transitions. Second operand has 123 states, 123 states have (on average 2.073170731707317) internal successors, (255), 123 states have internal predecessors, (255), 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) [2024-11-09 05:00:01,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:00:01,530 INFO L93 Difference]: Finished difference Result 283 states and 299 transitions. [2024-11-09 05:00:01,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2024-11-09 05:00:01,531 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 2.073170731707317) internal successors, (255), 123 states have internal predecessors, (255), 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 225 [2024-11-09 05:00:01,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:00:01,534 INFO L225 Difference]: With dead ends: 283 [2024-11-09 05:00:01,534 INFO L226 Difference]: Without dead ends: 254 [2024-11-09 05:00:01,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 773 GetRequests, 643 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3332 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=5352, Invalid=11940, Unknown=0, NotChecked=0, Total=17292 [2024-11-09 05:00:01,540 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:00:01,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 66 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:00:01,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-09 05:00:01,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 253. [2024-11-09 05:00:01,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.0119047619047619) internal successors, (255), 252 states have internal predecessors, (255), 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) [2024-11-09 05:00:01,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 255 transitions. [2024-11-09 05:00:01,561 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 255 transitions. Word has length 225 [2024-11-09 05:00:01,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:00:01,562 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 255 transitions. [2024-11-09 05:00:01,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 2.073170731707317) internal successors, (255), 123 states have internal predecessors, (255), 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) [2024-11-09 05:00:01,562 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 255 transitions. [2024-11-09 05:00:01,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-11-09 05:00:01,566 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:00:01,567 INFO L215 NwaCegarLoop]: trace histogram [99, 99, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:00:01,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 05:00:01,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 05:00:01,768 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:00:01,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:00:01,768 INFO L85 PathProgramCache]: Analyzing trace with hash -2048000008, now seen corresponding path program 9 times [2024-11-09 05:00:01,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:00:01,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029468663] [2024-11-09 05:00:01,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:00:01,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:00:01,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:00:11,326 INFO L134 CoverageAnalysis]: Checked inductivity of 10285 backedges. 0 proven. 9801 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-09 05:00:11,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:00:11,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029468663] [2024-11-09 05:00:11,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029468663] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:00:11,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384153700] [2024-11-09 05:00:11,327 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:00:11,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:00:11,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:00:11,329 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:00:11,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 05:00:11,783 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:00:11,783 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:00:11,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 1150 conjuncts, 101 conjuncts are in the unsatisfiable core [2024-11-09 05:00:11,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:00:12,211 INFO L134 CoverageAnalysis]: Checked inductivity of 10285 backedges. 0 proven. 9801 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-09 05:00:12,211 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:00:28,311 INFO L134 CoverageAnalysis]: Checked inductivity of 10285 backedges. 0 proven. 9801 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-09 05:00:28,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384153700] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:00:28,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [464916829] [2024-11-09 05:00:28,315 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 05:00:28,315 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:00:28,315 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:00:28,316 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:00:28,316 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:00:28,595 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:00:30,069 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8414#(and (exists ((|v_ULTIMATE.start_main_~min~0#1_114| Int) (|v_ULTIMATE.start_main_#t~mem4#1_111| Int)) (and (<= 1 |#StackHeapBarrier|) (or (and (= |ULTIMATE.start_main_#t~mem4#1| |v_ULTIMATE.start_main_#t~mem4#1_111|) (= |v_ULTIMATE.start_main_~min~0#1_114| |ULTIMATE.start_main_~min~0#1|) (<= |v_ULTIMATE.start_main_~min~0#1_114| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996))) (and (<= (+ (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996) 1) |v_ULTIMATE.start_main_~min~0#1_114|) (= |ULTIMATE.start_main_~min~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996)))) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|))) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0) |ULTIMATE.start_main_~min~0#1|))' at error location [2024-11-09 05:00:30,069 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:00:30,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:00:30,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101, 101] total 202 [2024-11-09 05:00:30,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962416154] [2024-11-09 05:00:30,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:00:30,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 203 states [2024-11-09 05:00:30,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:00:30,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2024-11-09 05:00:30,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20530, Invalid=24202, Unknown=0, NotChecked=0, Total=44732 [2024-11-09 05:00:30,086 INFO L87 Difference]: Start difference. First operand 253 states and 255 transitions. Second operand has 203 states, 203 states have (on average 2.0295566502463056) internal successors, (412), 202 states have internal predecessors, (412), 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) [2024-11-09 05:00:31,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:00:31,759 INFO L93 Difference]: Finished difference Result 508 states and 612 transitions. [2024-11-09 05:00:31,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2024-11-09 05:00:31,760 INFO L78 Accepts]: Start accepts. Automaton has has 203 states, 203 states have (on average 2.0295566502463056) internal successors, (412), 202 states have internal predecessors, (412), 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 251 [2024-11-09 05:00:31,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:00:31,762 INFO L225 Difference]: With dead ends: 508 [2024-11-09 05:00:31,763 INFO L226 Difference]: Without dead ends: 455 [2024-11-09 05:00:31,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 852 GetRequests, 642 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3111 ImplicationChecksByTransitivity, 22.4s TimeCoverageRelationStatistics Valid=20530, Invalid=24202, Unknown=0, NotChecked=0, Total=44732 [2024-11-09 05:00:31,769 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:00:31,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 56 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 05:00:31,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2024-11-09 05:00:31,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 455. [2024-11-09 05:00:31,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 454 states have (on average 1.0066079295154184) internal successors, (457), 454 states have internal predecessors, (457), 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) [2024-11-09 05:00:31,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 457 transitions. [2024-11-09 05:00:31,801 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 457 transitions. Word has length 251 [2024-11-09 05:00:31,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:00:31,802 INFO L471 AbstractCegarLoop]: Abstraction has 455 states and 457 transitions. [2024-11-09 05:00:31,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 203 states, 203 states have (on average 2.0295566502463056) internal successors, (412), 202 states have internal predecessors, (412), 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) [2024-11-09 05:00:31,803 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 457 transitions. [2024-11-09 05:00:31,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2024-11-09 05:00:31,816 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:00:31,816 INFO L215 NwaCegarLoop]: trace histogram [200, 200, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:00:31,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 05:00:32,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 05:00:32,017 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:00:32,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:00:32,018 INFO L85 PathProgramCache]: Analyzing trace with hash 741645937, now seen corresponding path program 10 times [2024-11-09 05:00:32,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:00:32,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508152213] [2024-11-09 05:00:32,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:00:32,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:00:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:01:08,998 INFO L134 CoverageAnalysis]: Checked inductivity of 40484 backedges. 0 proven. 40000 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-09 05:01:08,998 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:01:08,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508152213] [2024-11-09 05:01:08,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508152213] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:01:08,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555581352] [2024-11-09 05:01:08,999 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 05:01:09,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:01:09,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:01:09,002 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:01:09,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 05:01:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:01:09,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 2160 conjuncts, 202 conjuncts are in the unsatisfiable core [2024-11-09 05:01:09,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:01:10,406 INFO L134 CoverageAnalysis]: Checked inductivity of 40484 backedges. 0 proven. 40000 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-09 05:01:10,406 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:02:09,792 INFO L134 CoverageAnalysis]: Checked inductivity of 40484 backedges. 0 proven. 40000 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-09 05:02:09,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555581352] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:02:09,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1332218838] [2024-11-09 05:02:09,795 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 05:02:09,795 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:02:09,796 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:02:09,796 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:02:09,796 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:02:09,993 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:02:12,091 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12977#(and (exists ((|v_ULTIMATE.start_main_#t~mem4#1_136| Int) (|v_ULTIMATE.start_main_~min~0#1_139| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|) (or (and (= |ULTIMATE.start_main_~min~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996)) (<= (+ (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996) 1) |v_ULTIMATE.start_main_~min~0#1_139|)) (and (= |ULTIMATE.start_main_#t~mem4#1| |v_ULTIMATE.start_main_#t~mem4#1_136|) (<= |v_ULTIMATE.start_main_~min~0#1_139| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996)) (= |v_ULTIMATE.start_main_~min~0#1_139| |ULTIMATE.start_main_~min~0#1|))))) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0) |ULTIMATE.start_main_~min~0#1|))' at error location [2024-11-09 05:02:12,092 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:02:12,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:02:12,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [202, 202, 202] total 404 [2024-11-09 05:02:12,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422302971] [2024-11-09 05:02:12,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:02:12,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 405 states [2024-11-09 05:02:12,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:02:12,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 405 interpolants. [2024-11-09 05:02:12,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81837, Invalid=89145, Unknown=0, NotChecked=0, Total=170982 [2024-11-09 05:02:12,122 INFO L87 Difference]: Start difference. First operand 455 states and 457 transitions. Second operand has 405 states, 405 states have (on average 2.0148148148148146) internal successors, (816), 404 states have internal predecessors, (816), 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) [2024-11-09 05:02:17,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:02:17,356 INFO L93 Difference]: Finished difference Result 912 states and 1117 transitions. [2024-11-09 05:02:17,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 404 states. [2024-11-09 05:02:17,357 INFO L78 Accepts]: Start accepts. Automaton has has 405 states, 405 states have (on average 2.0148148148148146) internal successors, (816), 404 states have internal predecessors, (816), 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 453 [2024-11-09 05:02:17,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:02:17,361 INFO L225 Difference]: With dead ends: 912 [2024-11-09 05:02:17,361 INFO L226 Difference]: Without dead ends: 859 [2024-11-09 05:02:17,371 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1559 GetRequests, 1147 SyntacticMatches, 0 SemanticMatches, 412 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6242 ImplicationChecksByTransitivity, 82.6s TimeCoverageRelationStatistics Valid=81837, Invalid=89145, Unknown=0, NotChecked=0, Total=170982 [2024-11-09 05:02:17,371 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:02:17,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 56 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 05:02:17,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2024-11-09 05:02:17,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 859. [2024-11-09 05:02:17,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 858 states have (on average 1.0034965034965035) internal successors, (861), 858 states have internal predecessors, (861), 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) [2024-11-09 05:02:17,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 861 transitions. [2024-11-09 05:02:17,400 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 861 transitions. Word has length 453 [2024-11-09 05:02:17,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:02:17,401 INFO L471 AbstractCegarLoop]: Abstraction has 859 states and 861 transitions. [2024-11-09 05:02:17,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 405 states, 405 states have (on average 2.0148148148148146) internal successors, (816), 404 states have internal predecessors, (816), 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) [2024-11-09 05:02:17,402 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 861 transitions. [2024-11-09 05:02:17,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 858 [2024-11-09 05:02:17,430 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:02:17,431 INFO L215 NwaCegarLoop]: trace histogram [402, 402, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:02:17,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 05:02:17,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-09 05:02:17,632 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:02:17,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:02:17,632 INFO L85 PathProgramCache]: Analyzing trace with hash 871455139, now seen corresponding path program 11 times [2024-11-09 05:02:17,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:02:17,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890686448] [2024-11-09 05:02:17,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:02:17,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:02:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:04:29,811 INFO L134 CoverageAnalysis]: Checked inductivity of 162088 backedges. 0 proven. 161604 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-09 05:04:29,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:04:29,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890686448] [2024-11-09 05:04:29,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890686448] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:04:29,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141287087] [2024-11-09 05:04:29,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:04:29,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:04:29,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:04:29,814 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:04:29,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 05:04:31,426 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-11-09 05:04:31,426 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:04:31,431 INFO L255 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 05:04:31,441 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:04:35,936 INFO L134 CoverageAnalysis]: Checked inductivity of 162088 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 161604 trivial. 0 not checked. [2024-11-09 05:04:35,936 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:04:40,785 INFO L134 CoverageAnalysis]: Checked inductivity of 162088 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 161604 trivial. 0 not checked. [2024-11-09 05:04:40,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141287087] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:04:40,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1800973558] [2024-11-09 05:04:40,788 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 05:04:40,789 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:04:40,789 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:04:40,789 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:04:40,789 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:04:40,944 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:04:44,610 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '21222#(and (exists ((|v_ULTIMATE.start_main_#t~mem4#1_161| Int) (|v_ULTIMATE.start_main_~min~0#1_164| Int)) (and (<= 1 |#StackHeapBarrier|) (or (and (= |ULTIMATE.start_main_~min~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996)) (<= (+ (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996) 1) |v_ULTIMATE.start_main_~min~0#1_164|)) (and (= |ULTIMATE.start_main_#t~mem4#1| |v_ULTIMATE.start_main_#t~mem4#1_161|) (= |v_ULTIMATE.start_main_~min~0#1_164| |ULTIMATE.start_main_~min~0#1|) (<= |v_ULTIMATE.start_main_~min~0#1_164| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996)))) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|))) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0) |ULTIMATE.start_main_~min~0#1|))' at error location [2024-11-09 05:04:44,610 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:04:44,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:04:44,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [404, 25, 25] total 451 [2024-11-09 05:04:44,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645362752] [2024-11-09 05:04:44,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:04:44,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 451 states [2024-11-09 05:04:44,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:04:44,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 451 interpolants. [2024-11-09 05:04:44,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82964, Invalid=128176, Unknown=0, NotChecked=0, Total=211140 [2024-11-09 05:04:44,643 INFO L87 Difference]: Start difference. First operand 859 states and 861 transitions. Second operand has 451 states, 451 states have (on average 2.0199556541019956) internal successors, (911), 451 states have internal predecessors, (911), 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) [2024-11-09 05:04:50,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:04:50,952 INFO L93 Difference]: Finished difference Result 963 states and 991 transitions. [2024-11-09 05:04:50,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 451 states. [2024-11-09 05:04:50,954 INFO L78 Accepts]: Start accepts. Automaton has has 451 states, 451 states have (on average 2.0199556541019956) internal successors, (911), 451 states have internal predecessors, (911), 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 857 [2024-11-09 05:04:50,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:04:50,959 INFO L225 Difference]: With dead ends: 963 [2024-11-09 05:04:50,960 INFO L226 Difference]: Without dead ends: 910 [2024-11-09 05:04:50,973 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2973 GetRequests, 2515 SyntacticMatches, 0 SemanticMatches, 458 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22728 ImplicationChecksByTransitivity, 85.3s TimeCoverageRelationStatistics Valid=82964, Invalid=128176, Unknown=0, NotChecked=0, Total=211140 [2024-11-09 05:04:50,974 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:04:50,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 74 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 05:04:50,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2024-11-09 05:04:51,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 909. [2024-11-09 05:04:51,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 908 states have (on average 1.0033039647577093) internal successors, (911), 908 states have internal predecessors, (911), 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) [2024-11-09 05:04:51,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 911 transitions. [2024-11-09 05:04:51,007 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 911 transitions. Word has length 857 [2024-11-09 05:04:51,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:04:51,008 INFO L471 AbstractCegarLoop]: Abstraction has 909 states and 911 transitions. [2024-11-09 05:04:51,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 451 states, 451 states have (on average 2.0199556541019956) internal successors, (911), 451 states have internal predecessors, (911), 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) [2024-11-09 05:04:51,010 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 911 transitions. [2024-11-09 05:04:51,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 908 [2024-11-09 05:04:51,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:04:51,037 INFO L215 NwaCegarLoop]: trace histogram [403, 403, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:04:51,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 05:04:51,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 05:04:51,238 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:04:51,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:04:51,239 INFO L85 PathProgramCache]: Analyzing trace with hash 474949480, now seen corresponding path program 12 times [2024-11-09 05:04:51,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:04:51,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492856102] [2024-11-09 05:04:51,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:04:51,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:04:52,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:07:05,220 INFO L134 CoverageAnalysis]: Checked inductivity of 164525 backedges. 0 proven. 162409 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2024-11-09 05:07:05,220 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:07:05,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492856102] [2024-11-09 05:07:05,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492856102] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:07:05,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695062113] [2024-11-09 05:07:05,221 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:07:05,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:07:05,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:07:05,222 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:07:05,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 05:07:06,511 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:07:06,511 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:07:06,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 4310 conjuncts, 405 conjuncts are in the unsatisfiable core [2024-11-09 05:07:06,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:07:07,939 INFO L134 CoverageAnalysis]: Checked inductivity of 164525 backedges. 0 proven. 162409 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2024-11-09 05:07:07,939 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:10:44,985 INFO L134 CoverageAnalysis]: Checked inductivity of 164525 backedges. 0 proven. 162409 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2024-11-09 05:10:44,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695062113] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:10:44,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [611186915] [2024-11-09 05:10:44,987 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 05:10:44,988 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:10:44,988 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:10:44,988 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:10:44,988 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:10:45,136 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:10:48,697 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '30278#(and (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (exists ((|v_ULTIMATE.start_main_~min~0#1_213| Int) (|v_ULTIMATE.start_main_#t~mem4#1_210| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|) (or (and (= |ULTIMATE.start_main_~min~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996)) (<= (+ (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996) 1) |v_ULTIMATE.start_main_~min~0#1_213|)) (and (<= |v_ULTIMATE.start_main_~min~0#1_213| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 399996)) (= |ULTIMATE.start_main_#t~mem4#1| |v_ULTIMATE.start_main_#t~mem4#1_210|) (= |v_ULTIMATE.start_main_~min~0#1_213| |ULTIMATE.start_main_~min~0#1|))))) (<= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0) |ULTIMATE.start_main_~min~0#1|))' at error location [2024-11-09 05:10:48,697 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:10:48,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:10:48,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [405, 405, 405] total 810 [2024-11-09 05:10:48,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620947017] [2024-11-09 05:10:48,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:10:48,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 811 states [2024-11-09 05:10:48,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:10:48,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 811 interpolants. [2024-11-09 05:10:48,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328482, Invalid=343098, Unknown=0, NotChecked=0, Total=671580 [2024-11-09 05:10:48,797 INFO L87 Difference]: Start difference. First operand 909 states and 911 transitions. Second operand has 811 states, 811 states have (on average 2.0073982737361282) internal successors, (1628), 810 states have internal predecessors, (1628), 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) [2024-11-09 05:11:19,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:11:19,493 INFO L93 Difference]: Finished difference Result 1820 states and 2228 transitions. [2024-11-09 05:11:19,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 810 states. [2024-11-09 05:11:19,494 INFO L78 Accepts]: Start accepts. Automaton has has 811 states, 811 states have (on average 2.0073982737361282) internal successors, (1628), 810 states have internal predecessors, (1628), 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 907 [2024-11-09 05:11:19,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:11:19,501 INFO L225 Difference]: With dead ends: 1820 [2024-11-09 05:11:19,502 INFO L226 Difference]: Without dead ends: 1719 [2024-11-09 05:11:19,532 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3124 GetRequests, 2306 SyntacticMatches, 0 SemanticMatches, 818 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12535 ImplicationChecksByTransitivity, 291.1s TimeCoverageRelationStatistics Valid=328482, Invalid=343098, Unknown=0, NotChecked=0, Total=671580 [2024-11-09 05:11:19,532 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 1642 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 1644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:11:19,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 74 Invalid, 1644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1642 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-09 05:11:19,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2024-11-09 05:11:19,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1719. [2024-11-09 05:11:19,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 1718 states have (on average 1.0017462165308497) internal successors, (1721), 1718 states have internal predecessors, (1721), 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) [2024-11-09 05:11:19,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 1721 transitions. [2024-11-09 05:11:19,588 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 1721 transitions. Word has length 907 [2024-11-09 05:11:19,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:11:19,590 INFO L471 AbstractCegarLoop]: Abstraction has 1719 states and 1721 transitions. [2024-11-09 05:11:19,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 811 states, 811 states have (on average 2.0073982737361282) internal successors, (1628), 810 states have internal predecessors, (1628), 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) [2024-11-09 05:11:19,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 1721 transitions. [2024-11-09 05:11:19,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1718 [2024-11-09 05:11:19,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:11:19,618 INFO L215 NwaCegarLoop]: trace histogram [808, 808, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:11:19,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-09 05:11:19,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4021507-38ac-445c-bef7-01d22e137a57/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 05:11:19,819 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:11:19,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:11:19,820 INFO L85 PathProgramCache]: Analyzing trace with hash -167818287, now seen corresponding path program 13 times [2024-11-09 05:11:19,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:11:19,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267155402] [2024-11-09 05:11:19,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:11:19,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:11:23,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat