./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_maxInArray_ground.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_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/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_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/standard_maxInArray_ground.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/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_9671ca93-09ab-44bb-a4b6-9a67ae45d265/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 418a605fc1323c67278586b967efb51b918569726e40c2a0630b64c1083a6ff9 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:07:33,025 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:07:33,119 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:07:33,126 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:07:33,126 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:07:33,156 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:07:33,157 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:07:33,157 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:07:33,158 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:07:33,158 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:07:33,159 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:07:33,159 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:07:33,159 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:07:33,160 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:07:33,160 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:07:33,160 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:07:33,161 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:07:33,161 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:07:33,162 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:07:33,162 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:07:33,162 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:07:33,163 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:07:33,164 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:07:33,164 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:07:33,165 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:07:33,165 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:07:33,165 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:07:33,166 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:07:33,166 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:07:33,166 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:07:33,182 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:07:33,182 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:07:33,183 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:07:33,183 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:07:33,183 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:07:33,184 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:07:33,184 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:07:33,184 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:07:33,185 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:07:33,185 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:07:33,185 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:07:33,188 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:07:33,188 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:07:33,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:07:33,189 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:07:33,189 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:07:33,189 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:07:33,189 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_9671ca93-09ab-44bb-a4b6-9a67ae45d265/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 418a605fc1323c67278586b967efb51b918569726e40c2a0630b64c1083a6ff9 [2024-11-09 05:07:33,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:07:33,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:07:33,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:07:33,543 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:07:33,543 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:07:33,544 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/array-examples/standard_maxInArray_ground.i Unable to find full path for "g++" [2024-11-09 05:07:35,525 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:07:35,814 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:07:35,814 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/sv-benchmarks/c/array-examples/standard_maxInArray_ground.i [2024-11-09 05:07:35,828 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/data/176a69e6f/f0fe39c0fae0426eae7e644a2bef42c5/FLAGcbb46708a [2024-11-09 05:07:35,848 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/data/176a69e6f/f0fe39c0fae0426eae7e644a2bef42c5 [2024-11-09 05:07:35,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:07:35,853 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:07:35,855 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:07:35,856 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:07:35,862 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:07:35,863 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:07:35" (1/1) ... [2024-11-09 05:07:35,864 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@631d75f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:35, skipping insertion in model container [2024-11-09 05:07:35,864 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:07:35" (1/1) ... [2024-11-09 05:07:35,891 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:07:36,129 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_9671ca93-09ab-44bb-a4b6-9a67ae45d265/sv-benchmarks/c/array-examples/standard_maxInArray_ground.i[819,832] [2024-11-09 05:07:36,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:07:36,158 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:07:36,171 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_9671ca93-09ab-44bb-a4b6-9a67ae45d265/sv-benchmarks/c/array-examples/standard_maxInArray_ground.i[819,832] [2024-11-09 05:07:36,178 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:07:36,197 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:07:36,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:36 WrapperNode [2024-11-09 05:07:36,197 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:07:36,198 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:07:36,198 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:07:36,198 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:07:36,207 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:36" (1/1) ... [2024-11-09 05:07:36,214 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:36" (1/1) ... [2024-11-09 05:07:36,233 INFO L138 Inliner]: procedures = 16, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2024-11-09 05:07:36,234 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:07:36,235 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:07:36,235 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:07:36,235 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:07:36,245 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:36" (1/1) ... [2024-11-09 05:07:36,245 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:36" (1/1) ... [2024-11-09 05:07:36,252 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:36" (1/1) ... [2024-11-09 05:07:36,253 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:36" (1/1) ... [2024-11-09 05:07:36,261 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:36" (1/1) ... [2024-11-09 05:07:36,264 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:36" (1/1) ... [2024-11-09 05:07:36,267 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:36" (1/1) ... [2024-11-09 05:07:36,268 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:36" (1/1) ... [2024-11-09 05:07:36,270 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:07:36,271 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:07:36,271 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:07:36,271 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:07:36,272 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:36" (1/1) ... [2024-11-09 05:07:36,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:07:36,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:07:36,308 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:07:36,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:07:36,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:07:36,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:07:36,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 05:07:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 05:07:36,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:07:36,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:07:36,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 05:07:36,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 05:07:36,445 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:07:36,447 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:07:36,691 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-09 05:07:36,692 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:07:36,756 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:07:36,759 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 05:07:36,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:07:36 BoogieIcfgContainer [2024-11-09 05:07:36,760 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:07:36,762 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:07:36,763 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:07:36,767 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:07:36,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:07:35" (1/3) ... [2024-11-09 05:07:36,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24640e27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:07:36, skipping insertion in model container [2024-11-09 05:07:36,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:36" (2/3) ... [2024-11-09 05:07:36,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24640e27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:07:36, skipping insertion in model container [2024-11-09 05:07:36,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:07:36" (3/3) ... [2024-11-09 05:07:36,773 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_maxInArray_ground.i [2024-11-09 05:07:36,793 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:07:36,793 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:07:36,870 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:07:36,880 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;@d567851, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:07:36,880 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:07:36,884 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 05:07:36,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 05:07:36,891 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:07:36,891 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:07:36,892 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:07:36,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:07:36,897 INFO L85 PathProgramCache]: Analyzing trace with hash 190647081, now seen corresponding path program 1 times [2024-11-09 05:07:36,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:07:36,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652103567] [2024-11-09 05:07:36,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:07:36,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:07:37,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:07:37,157 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 05:07:37,157 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:07:37,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652103567] [2024-11-09 05:07:37,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652103567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:07:37,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:07:37,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:07:37,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026793695] [2024-11-09 05:07:37,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:07:37,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:07:37,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:07:37,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:07:37,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:07:37,205 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 05:07:37,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:07:37,267 INFO L93 Difference]: Finished difference Result 29 states and 41 transitions. [2024-11-09 05:07:37,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:07:37,270 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 05:07:37,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:07:37,279 INFO L225 Difference]: With dead ends: 29 [2024-11-09 05:07:37,279 INFO L226 Difference]: Without dead ends: 15 [2024-11-09 05:07:37,282 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 05:07:37,288 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, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:07:37,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 27 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:07:37,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-09 05:07:37,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-09 05:07:37,325 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 05:07:37,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2024-11-09 05:07:37,328 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 9 [2024-11-09 05:07:37,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:07:37,329 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2024-11-09 05:07:37,330 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 05:07:37,330 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2024-11-09 05:07:37,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 05:07:37,331 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:07:37,332 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:07:37,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:07:37,333 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:07:37,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:07:37,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1591695214, now seen corresponding path program 1 times [2024-11-09 05:07:37,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:07:37,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093892975] [2024-11-09 05:07:37,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:07:37,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:07:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:07:37,473 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 05:07:37,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:07:37,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093892975] [2024-11-09 05:07:37,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093892975] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:07:37,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692870450] [2024-11-09 05:07:37,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:07:37,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:07:37,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:07:37,477 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:07:37,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:07:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:07:37,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 05:07:37,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:07:37,602 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 05:07:37,602 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:07:37,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692870450] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:07:37,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:07:37,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-09 05:07:37,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000787844] [2024-11-09 05:07:37,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:07:37,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:07:37,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:07:37,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:07:37,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:07:37,607 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 05:07:37,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:07:37,631 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2024-11-09 05:07:37,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:07:37,632 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 05:07:37,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:07:37,633 INFO L225 Difference]: With dead ends: 24 [2024-11-09 05:07:37,633 INFO L226 Difference]: Without dead ends: 17 [2024-11-09 05:07:37,634 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 05:07:37,635 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 05:07:37,636 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 05:07:37,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-09 05:07:37,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-09 05:07:37,639 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 05:07:37,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2024-11-09 05:07:37,640 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 11 [2024-11-09 05:07:37,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:07:37,641 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2024-11-09 05:07:37,641 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 05:07:37,642 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2024-11-09 05:07:37,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 05:07:37,642 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:07:37,643 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:07:37,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 05:07:37,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:07:37,847 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:07:37,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:07:37,848 INFO L85 PathProgramCache]: Analyzing trace with hash 136220862, now seen corresponding path program 1 times [2024-11-09 05:07:37,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:07:37,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552345798] [2024-11-09 05:07:37,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:07:37,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:07:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:07:37,940 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 05:07:37,941 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:07:37,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552345798] [2024-11-09 05:07:37,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552345798] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:07:37,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333326710] [2024-11-09 05:07:37,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:07:37,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:07:37,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:07:37,944 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:07:37,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:07:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:07:38,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:07:38,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:07:38,060 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 05:07:38,061 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:07:38,098 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 05:07:38,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333326710] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:07:38,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1108585549] [2024-11-09 05:07:38,119 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 05:07:38,119 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:07:38,122 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:07:38,128 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:07:38,129 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:07:38,853 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:07:39,078 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '243#(and (<= (+ |ULTIMATE.start_main_~max~0#1| 1) (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) |ULTIMATE.start_main_~#a~0#1.offset|)) (<= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| 399996)) |ULTIMATE.start_main_~max~0#1|) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-09 05:07:39,078 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:07:39,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:07:39,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-09 05:07:39,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928587919] [2024-11-09 05:07:39,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:07:39,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 05:07:39,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:07:39,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 05:07:39,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-11-09 05:07:39,083 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 05:07:39,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:07:39,132 INFO L93 Difference]: Finished difference Result 34 states and 45 transitions. [2024-11-09 05:07:39,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:07:39,133 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 05:07:39,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:07:39,134 INFO L225 Difference]: With dead ends: 34 [2024-11-09 05:07:39,134 INFO L226 Difference]: Without dead ends: 22 [2024-11-09 05:07:39,136 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-11-09 05:07:39,137 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, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:07:39,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 32 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:07:39,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-09 05:07:39,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-09 05:07:39,143 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 05:07:39,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-11-09 05:07:39,145 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 13 [2024-11-09 05:07:39,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:07:39,145 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-11-09 05:07:39,145 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 05:07:39,145 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-11-09 05:07:39,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 05:07:39,146 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:07:39,146 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:07:39,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 05:07:39,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-09 05:07:39,348 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:07:39,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:07:39,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1141461427, now seen corresponding path program 2 times [2024-11-09 05:07:39,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:07:39,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89306691] [2024-11-09 05:07:39,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:07:39,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:07:39,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:07:39,516 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 05:07:39,517 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:07:39,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89306691] [2024-11-09 05:07:39,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89306691] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:07:39,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128737986] [2024-11-09 05:07:39,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:07:39,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:07:39,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:07:39,523 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:07:39,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:07:39,598 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 05:07:39,598 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:07:39,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:07:39,600 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:07:39,614 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 05:07:39,615 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:07:39,635 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 05:07:39,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128737986] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:07:39,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1630597940] [2024-11-09 05:07:39,637 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 05:07:39,638 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:07:39,638 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:07:39,638 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:07:39,639 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:07:39,957 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:07:40,138 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '441#(and (<= (+ |ULTIMATE.start_main_~max~0#1| 1) (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) |ULTIMATE.start_main_~#a~0#1.offset|)) (<= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| 399996)) |ULTIMATE.start_main_~max~0#1|) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-09 05:07:40,138 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:07:40,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:07:40,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-09 05:07:40,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813659120] [2024-11-09 05:07:40,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:07:40,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 05:07:40,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:07:40,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 05:07:40,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-11-09 05:07:40,141 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 05:07:40,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:07:40,181 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2024-11-09 05:07:40,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:07:40,182 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 05:07:40,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:07:40,184 INFO L225 Difference]: With dead ends: 34 [2024-11-09 05:07:40,184 INFO L226 Difference]: Without dead ends: 27 [2024-11-09 05:07:40,184 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-11-09 05:07:40,185 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 05:07:40,185 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 05:07:40,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-09 05:07:40,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-09 05:07:40,192 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 05:07:40,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2024-11-09 05:07:40,193 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 19 [2024-11-09 05:07:40,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:07:40,193 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2024-11-09 05:07:40,193 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 05:07:40,193 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2024-11-09 05:07:40,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 05:07:40,195 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:07:40,196 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:07:40,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 05:07:40,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:07:40,397 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:07:40,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:07:40,397 INFO L85 PathProgramCache]: Analyzing trace with hash -735888643, now seen corresponding path program 3 times [2024-11-09 05:07:40,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:07:40,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859460804] [2024-11-09 05:07:40,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:07:40,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:07:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:07:40,536 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 05:07:40,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:07:40,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859460804] [2024-11-09 05:07:40,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859460804] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:07:40,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925659146] [2024-11-09 05:07:40,536 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:07:40,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:07:40,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:07:40,538 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:07:40,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 05:07:40,619 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:07:40,619 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:07:40,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 05:07:40,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:07:40,651 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 05:07:40,652 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:07:40,729 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 05:07:40,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925659146] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:07:40,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1689647191] [2024-11-09 05:07:40,731 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 05:07:40,732 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:07:40,732 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:07:40,732 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:07:40,732 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:07:41,015 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:07:41,215 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '690#(and (<= (+ |ULTIMATE.start_main_~max~0#1| 1) (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) |ULTIMATE.start_main_~#a~0#1.offset|)) (<= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| 399996)) |ULTIMATE.start_main_~max~0#1|) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-09 05:07:41,215 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:07:41,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:07:41,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-09 05:07:41,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557263890] [2024-11-09 05:07:41,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:07:41,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 05:07:41,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:07:41,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 05:07:41,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2024-11-09 05:07:41,217 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 05:07:41,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:07:41,280 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2024-11-09 05:07:41,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 05:07:41,281 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 05:07:41,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:07:41,282 INFO L225 Difference]: With dead ends: 56 [2024-11-09 05:07:41,282 INFO L226 Difference]: Without dead ends: 39 [2024-11-09 05:07:41,282 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2024-11-09 05:07:41,283 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:07:41,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 56 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:07:41,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-09 05:07:41,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-09 05:07:41,288 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 05:07:41,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2024-11-09 05:07:41,288 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 25 [2024-11-09 05:07:41,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:07:41,289 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2024-11-09 05:07:41,289 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 05:07:41,289 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2024-11-09 05:07:41,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 05:07:41,290 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:07:41,290 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:07:41,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 05:07:41,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:07:41,491 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:07:41,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:07:41,491 INFO L85 PathProgramCache]: Analyzing trace with hash 872411611, now seen corresponding path program 4 times [2024-11-09 05:07:41,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:07:41,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608530679] [2024-11-09 05:07:41,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:07:41,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:07:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:07:41,852 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 05:07:41,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:07:41,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608530679] [2024-11-09 05:07:41,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608530679] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:07:41,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826820290] [2024-11-09 05:07:41,853 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 05:07:41,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:07:41,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:07:41,857 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:07:41,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 05:07:41,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:07:41,950 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 05:07:41,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:07:42,004 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 05:07:42,006 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:07:42,288 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 05:07:42,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826820290] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:07:42,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2110183509] [2024-11-09 05:07:42,292 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 05:07:42,292 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:07:42,292 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:07:42,293 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:07:42,293 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:07:42,541 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:07:42,800 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1074#(and (<= (+ |ULTIMATE.start_main_~max~0#1| 1) (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) |ULTIMATE.start_main_~#a~0#1.offset|)) (<= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| 399996)) |ULTIMATE.start_main_~max~0#1|) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-09 05:07:42,800 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:07:42,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:07:42,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2024-11-09 05:07:42,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079502984] [2024-11-09 05:07:42,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:07:42,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 05:07:42,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:07:42,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 05:07:42,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=732, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 05:07:42,804 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 05:07:42,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:07:42,919 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2024-11-09 05:07:42,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 05:07:42,920 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 05:07:42,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:07:42,921 INFO L225 Difference]: With dead ends: 80 [2024-11-09 05:07:42,921 INFO L226 Difference]: Without dead ends: 63 [2024-11-09 05:07:42,922 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=324, Invalid=732, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 05:07:42,923 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:07:42,924 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 38 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:07:42,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-09 05:07:42,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-09 05:07:42,931 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 05:07:42,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2024-11-09 05:07:42,933 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 37 [2024-11-09 05:07:42,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:07:42,933 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2024-11-09 05:07:42,934 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 05:07:42,934 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2024-11-09 05:07:42,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-09 05:07:42,935 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:07:42,935 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:07:42,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 05:07:43,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 05:07:43,137 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:07:43,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:07:43,138 INFO L85 PathProgramCache]: Analyzing trace with hash 714655895, now seen corresponding path program 5 times [2024-11-09 05:07:43,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:07:43,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760109393] [2024-11-09 05:07:43,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:07:43,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:07:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:07:43,979 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 05:07:43,979 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:07:43,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760109393] [2024-11-09 05:07:43,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760109393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:07:43,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086859746] [2024-11-09 05:07:43,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:07:43,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:07:43,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:07:43,982 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:07:43,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 05:07:44,085 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 05:07:44,086 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:07:44,087 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 05:07:44,089 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:07:44,198 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 05:07:44,198 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:07:44,346 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 05:07:44,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086859746] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:07:44,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1147145177] [2024-11-09 05:07:44,349 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 05:07:44,349 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:07:44,350 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:07:44,350 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:07:44,350 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:07:44,594 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:07:44,911 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1684#(and (<= (+ |ULTIMATE.start_main_~max~0#1| 1) (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) |ULTIMATE.start_main_~#a~0#1.offset|)) (<= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| 399996)) |ULTIMATE.start_main_~max~0#1|) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-09 05:07:44,912 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:07:44,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:07:44,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 7, 7] total 35 [2024-11-09 05:07:44,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196044113] [2024-11-09 05:07:44,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:07:44,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-09 05:07:44,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:07:44,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-09 05:07:44,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=1417, Unknown=0, NotChecked=0, Total=1806 [2024-11-09 05:07:44,917 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 05:07:45,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:07:45,083 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2024-11-09 05:07:45,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-09 05:07:45,085 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 05:07:45,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:07:45,086 INFO L225 Difference]: With dead ends: 95 [2024-11-09 05:07:45,086 INFO L226 Difference]: Without dead ends: 78 [2024-11-09 05:07:45,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=389, Invalid=1417, Unknown=0, NotChecked=0, Total=1806 [2024-11-09 05:07:45,088 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:07:45,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 90 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:07:45,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-09 05:07:45,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2024-11-09 05:07:45,095 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 05:07:45,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2024-11-09 05:07:45,096 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 61 [2024-11-09 05:07:45,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:07:45,096 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2024-11-09 05:07:45,097 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 05:07:45,097 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2024-11-09 05:07:45,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-09 05:07:45,098 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:07:45,098 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:07:45,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 05:07:45,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-09 05:07:45,299 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:07:45,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:07:45,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1038623548, now seen corresponding path program 6 times [2024-11-09 05:07:45,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:07:45,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884365394] [2024-11-09 05:07:45,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:07:45,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:07:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:07:46,145 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 05:07:46,146 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:07:46,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884365394] [2024-11-09 05:07:46,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884365394] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:07:46,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898119026] [2024-11-09 05:07:46,146 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:07:46,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:07:46,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:07:46,150 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:07:46,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 05:07:46,291 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:07:46,291 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:07:46,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 05:07:46,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:07:46,389 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 05:07:46,389 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:07:47,339 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 05:07:47,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898119026] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:07:47,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1250034831] [2024-11-09 05:07:47,342 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 05:07:47,343 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:07:47,343 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:07:47,344 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:07:47,345 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:07:47,561 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:07:47,835 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2437#(and (<= (+ |ULTIMATE.start_main_~max~0#1| 1) (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) |ULTIMATE.start_main_~#a~0#1.offset|)) (<= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| 399996)) |ULTIMATE.start_main_~max~0#1|) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-09 05:07:47,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:07:47,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:07:47,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 50 [2024-11-09 05:07:47,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57464990] [2024-11-09 05:07:47,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:07:47,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-09 05:07:47,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:07:47,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-09 05:07:47,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1299, Invalid=2123, Unknown=0, NotChecked=0, Total=3422 [2024-11-09 05:07:47,840 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 05:07:48,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:07:48,050 INFO L93 Difference]: Finished difference Result 156 states and 184 transitions. [2024-11-09 05:07:48,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-09 05:07:48,053 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 05:07:48,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:07:48,054 INFO L225 Difference]: With dead ends: 156 [2024-11-09 05:07:48,054 INFO L226 Difference]: Without dead ends: 127 [2024-11-09 05:07:48,059 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1299, Invalid=2123, Unknown=0, NotChecked=0, Total=3422 [2024-11-09 05:07:48,060 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:07:48,060 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 74 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:07:48,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-09 05:07:48,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2024-11-09 05:07:48,069 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 05:07:48,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 129 transitions. [2024-11-09 05:07:48,070 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 129 transitions. Word has length 75 [2024-11-09 05:07:48,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:07:48,070 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 129 transitions. [2024-11-09 05:07:48,070 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 05:07:48,071 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 129 transitions. [2024-11-09 05:07:48,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-09 05:07:48,072 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:07:48,072 INFO L215 NwaCegarLoop]: trace histogram [48, 48, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:07:48,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 05:07:48,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-09 05:07:48,276 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:07:48,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:07:48,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1518152633, now seen corresponding path program 7 times [2024-11-09 05:07:48,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:07:48,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429902829] [2024-11-09 05:07:48,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:07:48,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:07:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:07:50,952 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 05:07:50,953 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:07:50,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429902829] [2024-11-09 05:07:50,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429902829] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:07:50,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422078644] [2024-11-09 05:07:50,954 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 05:07:50,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:07:50,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:07:50,955 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:07:50,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 05:07:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:07:51,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-09 05:07:51,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:07:51,335 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 05:07:51,335 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:07:54,735 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 05:07:54,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422078644] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:07:54,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1974200252] [2024-11-09 05:07:54,738 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 05:07:54,739 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:07:54,739 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:07:54,739 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:07:54,739 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:07:55,015 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:07:55,404 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3707#(and (<= (+ |ULTIMATE.start_main_~max~0#1| 1) (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) |ULTIMATE.start_main_~#a~0#1.offset|)) (<= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| 399996)) |ULTIMATE.start_main_~max~0#1|) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-09 05:07:55,404 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:07:55,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:07:55,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 100 [2024-11-09 05:07:55,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549846522] [2024-11-09 05:07:55,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:07:55,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2024-11-09 05:07:55,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:07:55,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2024-11-09 05:07:55,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5074, Invalid=6698, Unknown=0, NotChecked=0, Total=11772 [2024-11-09 05:07:55,413 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 05:07:55,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:07:55,811 INFO L93 Difference]: Finished difference Result 256 states and 309 transitions. [2024-11-09 05:07:55,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-11-09 05:07:55,812 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 05:07:55,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:07:55,813 INFO L225 Difference]: With dead ends: 256 [2024-11-09 05:07:55,813 INFO L226 Difference]: Without dead ends: 227 [2024-11-09 05:07:55,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1378 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=5074, Invalid=6698, Unknown=0, NotChecked=0, Total=11772 [2024-11-09 05:07:55,817 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:07:55,818 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 47 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:07:55,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-11-09 05:07:55,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2024-11-09 05:07:55,832 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 05:07:55,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 229 transitions. [2024-11-09 05:07:55,834 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 229 transitions. Word has length 125 [2024-11-09 05:07:55,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:07:55,835 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 229 transitions. [2024-11-09 05:07:55,835 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 05:07:55,835 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 229 transitions. [2024-11-09 05:07:55,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-09 05:07:55,838 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:07:55,838 INFO L215 NwaCegarLoop]: trace histogram [98, 98, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:07:55,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 05:07:56,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-09 05:07:56,043 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:07:56,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:07:56,045 INFO L85 PathProgramCache]: Analyzing trace with hash -22896397, now seen corresponding path program 8 times [2024-11-09 05:07:56,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:07:56,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554530603] [2024-11-09 05:07:56,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:07:56,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:07:56,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:08:04,274 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 05:08:04,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:08:04,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554530603] [2024-11-09 05:08:04,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554530603] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:08:04,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806914654] [2024-11-09 05:08:04,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:08:04,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:08:04,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:08:04,277 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:08:04,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 05:08:04,526 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-09 05:08:04,526 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:08:04,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 05:08:04,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:08:05,080 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 05:08:05,080 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:08:05,713 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 05:08:05,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806914654] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:08:05,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [634702975] [2024-11-09 05:08:05,716 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 05:08:05,716 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:08:05,716 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:08:05,716 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:08:05,716 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:08:05,949 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:08:06,590 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5899#(and (<= (+ |ULTIMATE.start_main_~max~0#1| 1) (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) |ULTIMATE.start_main_~#a~0#1.offset|)) (<= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| 399996)) |ULTIMATE.start_main_~max~0#1|) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-09 05:08:06,590 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:08:06,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:08:06,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 13, 13] total 123 [2024-11-09 05:08:06,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635754918] [2024-11-09 05:08:06,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:08:06,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2024-11-09 05:08:06,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:08:06,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2024-11-09 05:08:06,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5349, Invalid=11681, Unknown=0, NotChecked=0, Total=17030 [2024-11-09 05:08:06,599 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 05:08:07,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:08:07,101 INFO L93 Difference]: Finished difference Result 283 states and 299 transitions. [2024-11-09 05:08:07,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2024-11-09 05:08:07,102 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 05:08:07,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:08:07,104 INFO L225 Difference]: With dead ends: 283 [2024-11-09 05:08:07,104 INFO L226 Difference]: Without dead ends: 254 [2024-11-09 05:08:07,108 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 773 GetRequests, 644 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3198 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=5349, Invalid=11681, Unknown=0, NotChecked=0, Total=17030 [2024-11-09 05:08:07,109 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:08:07,110 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 98 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:08:07,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-09 05:08:07,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 253. [2024-11-09 05:08:07,129 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 05:08:07,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 255 transitions. [2024-11-09 05:08:07,130 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 255 transitions. Word has length 225 [2024-11-09 05:08:07,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:08:07,131 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 255 transitions. [2024-11-09 05:08:07,132 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 05:08:07,132 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 255 transitions. [2024-11-09 05:08:07,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-11-09 05:08:07,136 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:08:07,136 INFO L215 NwaCegarLoop]: trace histogram [99, 99, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:08:07,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 05:08:07,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 05:08:07,337 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:08:07,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:08:07,337 INFO L85 PathProgramCache]: Analyzing trace with hash -2048000008, now seen corresponding path program 9 times [2024-11-09 05:08:07,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:08:07,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23414730] [2024-11-09 05:08:07,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:08:07,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:08:07,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:08:14,780 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 05:08:14,781 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:08:14,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23414730] [2024-11-09 05:08:14,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23414730] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:08:14,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191047599] [2024-11-09 05:08:14,781 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:08:14,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:08:14,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:08:14,782 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:08:14,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 05:08:15,124 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:08:15,124 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:08:15,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 1150 conjuncts, 101 conjuncts are in the unsatisfiable core [2024-11-09 05:08:15,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:08:15,443 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 05:08:15,443 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:08:28,176 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 05:08:28,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191047599] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:08:28,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1557610537] [2024-11-09 05:08:28,178 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 05:08:28,178 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:08:28,179 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:08:28,179 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:08:28,179 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:08:28,362 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:08:28,994 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8406#(and (<= (+ |ULTIMATE.start_main_~max~0#1| 1) (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) |ULTIMATE.start_main_~#a~0#1.offset|)) (<= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| 399996)) |ULTIMATE.start_main_~max~0#1|) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-09 05:08:28,994 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:08:28,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:08:28,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101, 101] total 202 [2024-11-09 05:08:28,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180914213] [2024-11-09 05:08:28,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:08:28,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 203 states [2024-11-09 05:08:28,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:08:29,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2024-11-09 05:08:29,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20527, Invalid=23783, Unknown=0, NotChecked=0, Total=44310 [2024-11-09 05:08:29,012 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 05:08:30,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:08:30,227 INFO L93 Difference]: Finished difference Result 508 states and 612 transitions. [2024-11-09 05:08:30,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2024-11-09 05:08:30,228 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 05:08:30,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:08:30,231 INFO L225 Difference]: With dead ends: 508 [2024-11-09 05:08:30,231 INFO L226 Difference]: Without dead ends: 455 [2024-11-09 05:08:30,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 852 GetRequests, 643 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2806 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=20527, Invalid=23783, Unknown=0, NotChecked=0, Total=44310 [2024-11-09 05:08:30,235 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:08:30,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 74 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:08:30,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2024-11-09 05:08:30,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 455. [2024-11-09 05:08:30,255 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 05:08:30,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 457 transitions. [2024-11-09 05:08:30,257 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 457 transitions. Word has length 251 [2024-11-09 05:08:30,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:08:30,258 INFO L471 AbstractCegarLoop]: Abstraction has 455 states and 457 transitions. [2024-11-09 05:08:30,259 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 05:08:30,259 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 457 transitions. [2024-11-09 05:08:30,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2024-11-09 05:08:30,269 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:08:30,269 INFO L215 NwaCegarLoop]: trace histogram [200, 200, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:08:30,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 05:08:30,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 05:08:30,470 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:08:30,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:08:30,470 INFO L85 PathProgramCache]: Analyzing trace with hash 741645937, now seen corresponding path program 10 times [2024-11-09 05:08:30,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:08:30,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338194344] [2024-11-09 05:08:30,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:08:30,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:08:30,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:08:59,853 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 05:08:59,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:08:59,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338194344] [2024-11-09 05:08:59,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338194344] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:08:59,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960023195] [2024-11-09 05:08:59,854 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 05:08:59,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:08:59,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:08:59,857 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:08:59,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 05:09:00,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:09:00,513 INFO L255 TraceCheckSpWp]: Trace formula consists of 2160 conjuncts, 202 conjuncts are in the unsatisfiable core [2024-11-09 05:09:00,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:09:01,092 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 05:09:01,092 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:09:51,438 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 05:09:51,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960023195] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:09:51,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [192203690] [2024-11-09 05:09:51,441 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 05:09:51,441 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:09:51,441 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:09:51,441 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:09:51,441 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:09:51,586 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:09:52,623 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12968#(and (<= (+ |ULTIMATE.start_main_~max~0#1| 1) (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) |ULTIMATE.start_main_~#a~0#1.offset|)) (<= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| 399996)) |ULTIMATE.start_main_~max~0#1|) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-09 05:09:52,623 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:09:52,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:09:52,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [202, 202, 202] total 404 [2024-11-09 05:09:52,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424333044] [2024-11-09 05:09:52,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:09:52,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 405 states [2024-11-09 05:09:52,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:09:52,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 405 interpolants. [2024-11-09 05:09:52,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81834, Invalid=88322, Unknown=0, NotChecked=0, Total=170156 [2024-11-09 05:09:52,663 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 05:09:57,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:09:57,580 INFO L93 Difference]: Finished difference Result 912 states and 1117 transitions. [2024-11-09 05:09:57,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 404 states. [2024-11-09 05:09:57,581 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 05:09:57,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:09:57,585 INFO L225 Difference]: With dead ends: 912 [2024-11-09 05:09:57,585 INFO L226 Difference]: Without dead ends: 859 [2024-11-09 05:09:57,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1559 GetRequests, 1148 SyntacticMatches, 0 SemanticMatches, 411 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5634 ImplicationChecksByTransitivity, 67.8s TimeCoverageRelationStatistics Valid=81834, Invalid=88322, Unknown=0, NotChecked=0, Total=170156 [2024-11-09 05:09:57,597 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:09:57,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 47 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 05:09:57,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2024-11-09 05:09:57,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 859. [2024-11-09 05:09:57,625 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 05:09:57,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 861 transitions. [2024-11-09 05:09:57,629 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 861 transitions. Word has length 453 [2024-11-09 05:09:57,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:09:57,630 INFO L471 AbstractCegarLoop]: Abstraction has 859 states and 861 transitions. [2024-11-09 05:09:57,631 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 05:09:57,631 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 861 transitions. [2024-11-09 05:09:57,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 858 [2024-11-09 05:09:57,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:09:57,662 INFO L215 NwaCegarLoop]: trace histogram [402, 402, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:09:57,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 05:09:57,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:09:57,863 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:09:57,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:09:57,863 INFO L85 PathProgramCache]: Analyzing trace with hash 871455139, now seen corresponding path program 11 times [2024-11-09 05:09:57,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:09:57,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807207154] [2024-11-09 05:09:57,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:57,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:09:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:12:06,391 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 05:12:06,391 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:12:06,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807207154] [2024-11-09 05:12:06,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807207154] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:12:06,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528262167] [2024-11-09 05:12:06,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:12:06,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:12:06,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:12:06,393 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:12:06,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 05:12:07,938 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-11-09 05:12:07,938 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:12:07,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 05:12:07,955 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:12:12,254 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 05:12:12,254 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:12:16,890 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 05:12:16,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528262167] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:12:16,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [664416975] [2024-11-09 05:12:16,893 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 05:12:16,893 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:12:16,893 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:12:16,893 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:12:16,894 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:12:17,073 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:12:19,292 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '21212#(and (<= (+ |ULTIMATE.start_main_~max~0#1| 1) (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) |ULTIMATE.start_main_~#a~0#1.offset|)) (<= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| 399996)) |ULTIMATE.start_main_~max~0#1|) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-09 05:12:19,292 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:12:19,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:12:19,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [404, 25, 25] total 451 [2024-11-09 05:12:19,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807584004] [2024-11-09 05:12:19,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:12:19,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 451 states [2024-11-09 05:12:19,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:12:19,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 451 interpolants. [2024-11-09 05:12:19,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82961, Invalid=127261, Unknown=0, NotChecked=0, Total=210222 [2024-11-09 05:12:19,332 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 05:12:24,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:12:24,913 INFO L93 Difference]: Finished difference Result 963 states and 991 transitions. [2024-11-09 05:12:24,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 451 states. [2024-11-09 05:12:24,914 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 05:12:24,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:12:24,919 INFO L225 Difference]: With dead ends: 963 [2024-11-09 05:12:24,919 INFO L226 Difference]: Without dead ends: 910 [2024-11-09 05:12:24,930 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2973 GetRequests, 2516 SyntacticMatches, 0 SemanticMatches, 457 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22254 ImplicationChecksByTransitivity, 76.2s TimeCoverageRelationStatistics Valid=82961, Invalid=127261, Unknown=0, NotChecked=0, Total=210222 [2024-11-09 05:12:24,931 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:12:24,931 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 90 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 05:12:24,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2024-11-09 05:12:24,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 909. [2024-11-09 05:12:24,962 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 05:12:24,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 911 transitions. [2024-11-09 05:12:24,965 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 911 transitions. Word has length 857 [2024-11-09 05:12:24,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:12:24,966 INFO L471 AbstractCegarLoop]: Abstraction has 909 states and 911 transitions. [2024-11-09 05:12:24,967 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 05:12:24,968 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 911 transitions. [2024-11-09 05:12:24,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 908 [2024-11-09 05:12:24,976 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:12:24,976 INFO L215 NwaCegarLoop]: trace histogram [403, 403, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:12:24,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 05:12:25,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:12:25,177 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:12:25,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:12:25,178 INFO L85 PathProgramCache]: Analyzing trace with hash 474949480, now seen corresponding path program 12 times [2024-11-09 05:12:25,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:12:25,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019438365] [2024-11-09 05:12:25,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:12:25,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:12:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:14:42,799 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 05:14:42,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:14:42,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019438365] [2024-11-09 05:14:42,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019438365] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:14:42,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094471428] [2024-11-09 05:14:42,799 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:14:42,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:14:42,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:14:42,800 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:14:42,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 05:14:44,086 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:14:44,086 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:14:44,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 4310 conjuncts, 405 conjuncts are in the unsatisfiable core [2024-11-09 05:14:44,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:14:45,242 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 05:14:45,243 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:18:30,297 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 05:18:30,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094471428] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:18:30,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1973216045] [2024-11-09 05:18:30,299 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 05:18:30,299 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:18:30,300 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:18:30,300 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:18:30,300 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:18:30,452 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:18:32,715 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '30267#(and (<= (+ |ULTIMATE.start_main_~max~0#1| 1) (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) |ULTIMATE.start_main_~#a~0#1.offset|)) (<= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| 399996)) |ULTIMATE.start_main_~max~0#1|) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-09 05:18:32,715 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:18:32,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:18:32,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [405, 405, 405] total 810 [2024-11-09 05:18:32,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605248721] [2024-11-09 05:18:32,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:18:32,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 811 states [2024-11-09 05:18:32,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:18:32,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 811 interpolants. [2024-11-09 05:18:32,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328479, Invalid=341463, Unknown=0, NotChecked=0, Total=669942 [2024-11-09 05:18:32,845 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 05:19:06,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:19:06,575 INFO L93 Difference]: Finished difference Result 1820 states and 2228 transitions. [2024-11-09 05:19:06,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 810 states. [2024-11-09 05:19:06,576 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 05:19:06,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:19:06,583 INFO L225 Difference]: With dead ends: 1820 [2024-11-09 05:19:06,583 INFO L226 Difference]: Without dead ends: 1719 [2024-11-09 05:19:06,623 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3124 GetRequests, 2307 SyntacticMatches, 0 SemanticMatches, 817 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11318 ImplicationChecksByTransitivity, 293.4s TimeCoverageRelationStatistics Valid=328479, Invalid=341463, Unknown=0, NotChecked=0, Total=669942 [2024-11-09 05:19:06,623 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1636 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 1638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:19:06,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 56 Invalid, 1638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1636 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-09 05:19:06,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2024-11-09 05:19:06,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1719. [2024-11-09 05:19:06,685 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 05:19:06,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 1721 transitions. [2024-11-09 05:19:06,692 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 1721 transitions. Word has length 907 [2024-11-09 05:19:06,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:19:06,694 INFO L471 AbstractCegarLoop]: Abstraction has 1719 states and 1721 transitions. [2024-11-09 05:19:06,696 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 05:19:06,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 1721 transitions. [2024-11-09 05:19:06,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1718 [2024-11-09 05:19:06,726 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:19:06,727 INFO L215 NwaCegarLoop]: trace histogram [808, 808, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:19:06,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-09 05:19:06,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671ca93-09ab-44bb-a4b6-9a67ae45d265/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:19:06,928 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:19:06,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:19:06,929 INFO L85 PathProgramCache]: Analyzing trace with hash -167818287, now seen corresponding path program 13 times [2024-11-09 05:19:06,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:19:06,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187846268] [2024-11-09 05:19:06,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:19:06,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:19:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat